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FAILED: patch "[PATCH] fbdev: Fix do_register_framebuffer to prevent null-ptr-deref" failed to apply to 5.15-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.15-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.15.y git checkout FETCH_HEAD git cherry-pick -x 17186f1f90d34fa701e4f14e6818305151637b9e # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025062002-haven-boil-c0ad@gregkh' --subject-prefix 'PATCH 5.15.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 17186f1f90d34fa701e4f14e6818305151637b9e Mon Sep 17 00:00:00 2001 From: Murad Masimov <m.masimov(a)mt-integration.ru> Date: Mon, 28 Apr 2025 18:34:06 +0300 Subject: [PATCH] fbdev: Fix do_register_framebuffer to prevent null-ptr-deref in fb_videomode_to_var If fb_add_videomode() in do_register_framebuffer() fails to allocate memory for fb_videomode, it will later lead to a null-ptr dereference in fb_videomode_to_var(), as the fb_info is registered while not having the mode in modelist that is expected to be there, i.e. the one that is described in fb_info->var. ================================================================ general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] CPU: 1 PID: 30371 Comm: syz-executor.1 Not tainted 5.10.226-syzkaller #0 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:fb_videomode_to_var+0x24/0x610 drivers/video/fbdev/core/modedb.c:901 Call Trace: display_to_var+0x3a/0x7c0 drivers/video/fbdev/core/fbcon.c:929 fbcon_resize+0x3e2/0x8f0 drivers/video/fbdev/core/fbcon.c:2071 resize_screen drivers/tty/vt/vt.c:1176 [inline] vc_do_resize+0x53a/0x1170 drivers/tty/vt/vt.c:1263 fbcon_modechanged+0x3ac/0x6e0 drivers/video/fbdev/core/fbcon.c:2720 fbcon_update_vcs+0x43/0x60 drivers/video/fbdev/core/fbcon.c:2776 do_fb_ioctl+0x6d2/0x740 drivers/video/fbdev/core/fbmem.c:1128 fb_ioctl+0xe7/0x150 drivers/video/fbdev/core/fbmem.c:1203 vfs_ioctl fs/ioctl.c:48 [inline] __do_sys_ioctl fs/ioctl.c:753 [inline] __se_sys_ioctl fs/ioctl.c:739 [inline] __x64_sys_ioctl+0x19a/0x210 fs/ioctl.c:739 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1 ================================================================ Even though fbcon_init() checks beforehand if fb_match_mode() in var_to_display() fails, it can not prevent the panic because fbcon_init() does not return error code. Considering this and the comment in the code about fb_match_mode() returning NULL - "This should not happen" - it is better to prevent registering the fb_info if its mode was not set successfully. Also move fb_add_videomode() closer to the beginning of do_register_framebuffer() to avoid having to do the cleanup on fail. Found by Linux Verification Center (linuxtesting.org) with Syzkaller. Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Cc: stable(a)vger.kernel.org Signed-off-by: Murad Masimov <m.masimov(a)mt-integration.ru> Signed-off-by: Helge Deller <deller(a)gmx.de> diff --git a/drivers/video/fbdev/core/fbmem.c b/drivers/video/fbdev/core/fbmem.c index 3c568cff2913..e1557d80768f 100644 --- a/drivers/video/fbdev/core/fbmem.c +++ b/drivers/video/fbdev/core/fbmem.c @@ -388,7 +388,7 @@ static int fb_check_foreignness(struct fb_info *fi) static int do_register_framebuffer(struct fb_info *fb_info) { - int i; + int i, err = 0; struct fb_videomode mode; if (fb_check_foreignness(fb_info)) @@ -397,10 +397,18 @@ static int do_register_framebuffer(struct fb_info *fb_info) if (num_registered_fb == FB_MAX) return -ENXIO; - num_registered_fb++; for (i = 0 ; i < FB_MAX; i++) if (!registered_fb[i]) break; + + if (!fb_info->modelist.prev || !fb_info->modelist.next) + INIT_LIST_HEAD(&fb_info->modelist); + + fb_var_to_videomode(&mode, &fb_info->var); + err = fb_add_videomode(&mode, &fb_info->modelist); + if (err < 0) + return err; + fb_info->node = i; refcount_set(&fb_info->count, 1); mutex_init(&fb_info->lock); @@ -426,16 +434,12 @@ static int do_register_framebuffer(struct fb_info *fb_info) if (bitmap_empty(fb_info->pixmap.blit_y, FB_MAX_BLIT_HEIGHT)) bitmap_fill(fb_info->pixmap.blit_y, FB_MAX_BLIT_HEIGHT); - if (!fb_info->modelist.prev || !fb_info->modelist.next) - INIT_LIST_HEAD(&fb_info->modelist); - if (fb_info->skip_vt_switch) pm_vt_switch_required(fb_info->device, false); else pm_vt_switch_required(fb_info->device, true); - fb_var_to_videomode(&mode, &fb_info->var); - fb_add_videomode(&mode, &fb_info->modelist); + num_registered_fb++; registered_fb[i] = fb_info; #ifdef CONFIG_GUMSTIX_AM200EPD

1 week, 3 days

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FAILED: patch "[PATCH] fbdev: Fix do_register_framebuffer to prevent null-ptr-deref" failed to apply to 6.1-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.1-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.1.y git checkout FETCH_HEAD git cherry-pick -x 17186f1f90d34fa701e4f14e6818305151637b9e # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025062001-system-wrongly-4caf@gregkh' --subject-prefix 'PATCH 6.1.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 17186f1f90d34fa701e4f14e6818305151637b9e Mon Sep 17 00:00:00 2001 From: Murad Masimov <m.masimov(a)mt-integration.ru> Date: Mon, 28 Apr 2025 18:34:06 +0300 Subject: [PATCH] fbdev: Fix do_register_framebuffer to prevent null-ptr-deref in fb_videomode_to_var If fb_add_videomode() in do_register_framebuffer() fails to allocate memory for fb_videomode, it will later lead to a null-ptr dereference in fb_videomode_to_var(), as the fb_info is registered while not having the mode in modelist that is expected to be there, i.e. the one that is described in fb_info->var. ================================================================ general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] CPU: 1 PID: 30371 Comm: syz-executor.1 Not tainted 5.10.226-syzkaller #0 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:fb_videomode_to_var+0x24/0x610 drivers/video/fbdev/core/modedb.c:901 Call Trace: display_to_var+0x3a/0x7c0 drivers/video/fbdev/core/fbcon.c:929 fbcon_resize+0x3e2/0x8f0 drivers/video/fbdev/core/fbcon.c:2071 resize_screen drivers/tty/vt/vt.c:1176 [inline] vc_do_resize+0x53a/0x1170 drivers/tty/vt/vt.c:1263 fbcon_modechanged+0x3ac/0x6e0 drivers/video/fbdev/core/fbcon.c:2720 fbcon_update_vcs+0x43/0x60 drivers/video/fbdev/core/fbcon.c:2776 do_fb_ioctl+0x6d2/0x740 drivers/video/fbdev/core/fbmem.c:1128 fb_ioctl+0xe7/0x150 drivers/video/fbdev/core/fbmem.c:1203 vfs_ioctl fs/ioctl.c:48 [inline] __do_sys_ioctl fs/ioctl.c:753 [inline] __se_sys_ioctl fs/ioctl.c:739 [inline] __x64_sys_ioctl+0x19a/0x210 fs/ioctl.c:739 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1 ================================================================ Even though fbcon_init() checks beforehand if fb_match_mode() in var_to_display() fails, it can not prevent the panic because fbcon_init() does not return error code. Considering this and the comment in the code about fb_match_mode() returning NULL - "This should not happen" - it is better to prevent registering the fb_info if its mode was not set successfully. Also move fb_add_videomode() closer to the beginning of do_register_framebuffer() to avoid having to do the cleanup on fail. Found by Linux Verification Center (linuxtesting.org) with Syzkaller. Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Cc: stable(a)vger.kernel.org Signed-off-by: Murad Masimov <m.masimov(a)mt-integration.ru> Signed-off-by: Helge Deller <deller(a)gmx.de> diff --git a/drivers/video/fbdev/core/fbmem.c b/drivers/video/fbdev/core/fbmem.c index 3c568cff2913..e1557d80768f 100644 --- a/drivers/video/fbdev/core/fbmem.c +++ b/drivers/video/fbdev/core/fbmem.c @@ -388,7 +388,7 @@ static int fb_check_foreignness(struct fb_info *fi) static int do_register_framebuffer(struct fb_info *fb_info) { - int i; + int i, err = 0; struct fb_videomode mode; if (fb_check_foreignness(fb_info)) @@ -397,10 +397,18 @@ static int do_register_framebuffer(struct fb_info *fb_info) if (num_registered_fb == FB_MAX) return -ENXIO; - num_registered_fb++; for (i = 0 ; i < FB_MAX; i++) if (!registered_fb[i]) break; + + if (!fb_info->modelist.prev || !fb_info->modelist.next) + INIT_LIST_HEAD(&fb_info->modelist); + + fb_var_to_videomode(&mode, &fb_info->var); + err = fb_add_videomode(&mode, &fb_info->modelist); + if (err < 0) + return err; + fb_info->node = i; refcount_set(&fb_info->count, 1); mutex_init(&fb_info->lock); @@ -426,16 +434,12 @@ static int do_register_framebuffer(struct fb_info *fb_info) if (bitmap_empty(fb_info->pixmap.blit_y, FB_MAX_BLIT_HEIGHT)) bitmap_fill(fb_info->pixmap.blit_y, FB_MAX_BLIT_HEIGHT); - if (!fb_info->modelist.prev || !fb_info->modelist.next) - INIT_LIST_HEAD(&fb_info->modelist); - if (fb_info->skip_vt_switch) pm_vt_switch_required(fb_info->device, false); else pm_vt_switch_required(fb_info->device, true); - fb_var_to_videomode(&mode, &fb_info->var); - fb_add_videomode(&mode, &fb_info->modelist); + num_registered_fb++; registered_fb[i] = fb_info; #ifdef CONFIG_GUMSTIX_AM200EPD

1 week, 3 days

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FAILED: patch "[PATCH] f2fs: don't over-report free space or inodes in statvfs" failed to apply to 5.4-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.4-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.4.y git checkout FETCH_HEAD git cherry-pick -x a9201960623287927bf5776de3f70fb2fbde7e02 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025062053-frenzy-grill-65e2@gregkh' --subject-prefix 'PATCH 5.4.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From a9201960623287927bf5776de3f70fb2fbde7e02 Mon Sep 17 00:00:00 2001 From: Chao Yu <chao(a)kernel.org> Date: Tue, 13 May 2025 19:25:38 +0800 Subject: [PATCH] f2fs: don't over-report free space or inodes in statvfs This fixes an analogus bug that was fixed in modern filesystems: a) xfs in commit 4b8d867ca6e2 ("xfs: don't over-report free space or inodes in statvfs") b) ext4 in commit f87d3af74193 ("ext4: don't over-report free space or inodes in statvfs") where statfs can report misleading / incorrect information where project quota is enabled, and the free space is less than the remaining quota. This commit will resolve a test failure in generic/762 which tests for this bug. generic/762 - output mismatch (see /share/git/fstests/results//generic/762.out.bad) --- tests/generic/762.out 2025-04-15 10:21:53.371067071 +0800 +++ /share/git/fstests/results//generic/762.out.bad 2025-05-13 16:13:37.000000000 +0800 @@ -6,8 +6,10 @@ root blocks2 is in range dir blocks2 is in range root bavail2 is in range -dir bavail2 is in range +dir bavail2 has value of 1539066 +dir bavail2 is NOT in range 304734.87 .. 310891.13 root blocks3 is in range ... (Run 'diff -u /share/git/fstests/tests/generic/762.out /share/git/fstests/results//generic/762.out.bad' to see the entire diff) HINT: You _MAY_ be missing kernel fix: XXXXXXXXXXXXXX xfs: don't over-report free space or inodes in statvfs Cc: stable(a)kernel.org Fixes: ddc34e328d06 ("f2fs: introduce f2fs_statfs_project") Signed-off-by: Chao Yu <chao(a)kernel.org> Signed-off-by: Jaegeuk Kim <jaegeuk(a)kernel.org> diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index b65d24a39d03..6744b8c65bc8 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -1808,26 +1808,32 @@ static int f2fs_statfs_project(struct super_block *sb, limit = min_not_zero(dquot->dq_dqb.dqb_bsoftlimit, dquot->dq_dqb.dqb_bhardlimit); - if (limit) - limit >>= sb->s_blocksize_bits; + limit >>= sb->s_blocksize_bits; + + if (limit) { + uint64_t remaining = 0; - if (limit && buf->f_blocks > limit) { curblock = (dquot->dq_dqb.dqb_curspace + dquot->dq_dqb.dqb_rsvspace) >> sb->s_blocksize_bits; - buf->f_blocks = limit; - buf->f_bfree = buf->f_bavail = - (buf->f_blocks > curblock) ? - (buf->f_blocks - curblock) : 0; + if (limit > curblock) + remaining = limit - curblock; + + buf->f_blocks = min(buf->f_blocks, limit); + buf->f_bfree = min(buf->f_bfree, remaining); + buf->f_bavail = min(buf->f_bavail, remaining); } limit = min_not_zero(dquot->dq_dqb.dqb_isoftlimit, dquot->dq_dqb.dqb_ihardlimit); - if (limit && buf->f_files > limit) { - buf->f_files = limit; - buf->f_ffree = - (buf->f_files > dquot->dq_dqb.dqb_curinodes) ? - (buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0; + if (limit) { + uint64_t remaining = 0; + + if (limit > dquot->dq_dqb.dqb_curinodes) + remaining = limit - dquot->dq_dqb.dqb_curinodes; + + buf->f_files = min(buf->f_files, limit); + buf->f_ffree = min(buf->f_ffree, remaining); } spin_unlock(&dquot->dq_dqb_lock);

1 week, 3 days

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FAILED: patch "[PATCH] f2fs: don't over-report free space or inodes in statvfs" failed to apply to 5.15-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.15-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.15.y git checkout FETCH_HEAD git cherry-pick -x a9201960623287927bf5776de3f70fb2fbde7e02 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025062052-clamp-tried-33e9@gregkh' --subject-prefix 'PATCH 5.15.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From a9201960623287927bf5776de3f70fb2fbde7e02 Mon Sep 17 00:00:00 2001 From: Chao Yu <chao(a)kernel.org> Date: Tue, 13 May 2025 19:25:38 +0800 Subject: [PATCH] f2fs: don't over-report free space or inodes in statvfs This fixes an analogus bug that was fixed in modern filesystems: a) xfs in commit 4b8d867ca6e2 ("xfs: don't over-report free space or inodes in statvfs") b) ext4 in commit f87d3af74193 ("ext4: don't over-report free space or inodes in statvfs") where statfs can report misleading / incorrect information where project quota is enabled, and the free space is less than the remaining quota. This commit will resolve a test failure in generic/762 which tests for this bug. generic/762 - output mismatch (see /share/git/fstests/results//generic/762.out.bad) --- tests/generic/762.out 2025-04-15 10:21:53.371067071 +0800 +++ /share/git/fstests/results//generic/762.out.bad 2025-05-13 16:13:37.000000000 +0800 @@ -6,8 +6,10 @@ root blocks2 is in range dir blocks2 is in range root bavail2 is in range -dir bavail2 is in range +dir bavail2 has value of 1539066 +dir bavail2 is NOT in range 304734.87 .. 310891.13 root blocks3 is in range ... (Run 'diff -u /share/git/fstests/tests/generic/762.out /share/git/fstests/results//generic/762.out.bad' to see the entire diff) HINT: You _MAY_ be missing kernel fix: XXXXXXXXXXXXXX xfs: don't over-report free space or inodes in statvfs Cc: stable(a)kernel.org Fixes: ddc34e328d06 ("f2fs: introduce f2fs_statfs_project") Signed-off-by: Chao Yu <chao(a)kernel.org> Signed-off-by: Jaegeuk Kim <jaegeuk(a)kernel.org> diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index b65d24a39d03..6744b8c65bc8 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -1808,26 +1808,32 @@ static int f2fs_statfs_project(struct super_block *sb, limit = min_not_zero(dquot->dq_dqb.dqb_bsoftlimit, dquot->dq_dqb.dqb_bhardlimit); - if (limit) - limit >>= sb->s_blocksize_bits; + limit >>= sb->s_blocksize_bits; + + if (limit) { + uint64_t remaining = 0; - if (limit && buf->f_blocks > limit) { curblock = (dquot->dq_dqb.dqb_curspace + dquot->dq_dqb.dqb_rsvspace) >> sb->s_blocksize_bits; - buf->f_blocks = limit; - buf->f_bfree = buf->f_bavail = - (buf->f_blocks > curblock) ? - (buf->f_blocks - curblock) : 0; + if (limit > curblock) + remaining = limit - curblock; + + buf->f_blocks = min(buf->f_blocks, limit); + buf->f_bfree = min(buf->f_bfree, remaining); + buf->f_bavail = min(buf->f_bavail, remaining); } limit = min_not_zero(dquot->dq_dqb.dqb_isoftlimit, dquot->dq_dqb.dqb_ihardlimit); - if (limit && buf->f_files > limit) { - buf->f_files = limit; - buf->f_ffree = - (buf->f_files > dquot->dq_dqb.dqb_curinodes) ? - (buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0; + if (limit) { + uint64_t remaining = 0; + + if (limit > dquot->dq_dqb.dqb_curinodes) + remaining = limit - dquot->dq_dqb.dqb_curinodes; + + buf->f_files = min(buf->f_files, limit); + buf->f_ffree = min(buf->f_ffree, remaining); } spin_unlock(&dquot->dq_dqb_lock);

1 week, 3 days

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FAILED: patch "[PATCH] f2fs: don't over-report free space or inodes in statvfs" failed to apply to 5.10-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.10-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.10.y git checkout FETCH_HEAD git cherry-pick -x a9201960623287927bf5776de3f70fb2fbde7e02 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025062052-outpost-creasing-1ef3@gregkh' --subject-prefix 'PATCH 5.10.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From a9201960623287927bf5776de3f70fb2fbde7e02 Mon Sep 17 00:00:00 2001 From: Chao Yu <chao(a)kernel.org> Date: Tue, 13 May 2025 19:25:38 +0800 Subject: [PATCH] f2fs: don't over-report free space or inodes in statvfs This fixes an analogus bug that was fixed in modern filesystems: a) xfs in commit 4b8d867ca6e2 ("xfs: don't over-report free space or inodes in statvfs") b) ext4 in commit f87d3af74193 ("ext4: don't over-report free space or inodes in statvfs") where statfs can report misleading / incorrect information where project quota is enabled, and the free space is less than the remaining quota. This commit will resolve a test failure in generic/762 which tests for this bug. generic/762 - output mismatch (see /share/git/fstests/results//generic/762.out.bad) --- tests/generic/762.out 2025-04-15 10:21:53.371067071 +0800 +++ /share/git/fstests/results//generic/762.out.bad 2025-05-13 16:13:37.000000000 +0800 @@ -6,8 +6,10 @@ root blocks2 is in range dir blocks2 is in range root bavail2 is in range -dir bavail2 is in range +dir bavail2 has value of 1539066 +dir bavail2 is NOT in range 304734.87 .. 310891.13 root blocks3 is in range ... (Run 'diff -u /share/git/fstests/tests/generic/762.out /share/git/fstests/results//generic/762.out.bad' to see the entire diff) HINT: You _MAY_ be missing kernel fix: XXXXXXXXXXXXXX xfs: don't over-report free space or inodes in statvfs Cc: stable(a)kernel.org Fixes: ddc34e328d06 ("f2fs: introduce f2fs_statfs_project") Signed-off-by: Chao Yu <chao(a)kernel.org> Signed-off-by: Jaegeuk Kim <jaegeuk(a)kernel.org> diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index b65d24a39d03..6744b8c65bc8 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -1808,26 +1808,32 @@ static int f2fs_statfs_project(struct super_block *sb, limit = min_not_zero(dquot->dq_dqb.dqb_bsoftlimit, dquot->dq_dqb.dqb_bhardlimit); - if (limit) - limit >>= sb->s_blocksize_bits; + limit >>= sb->s_blocksize_bits; + + if (limit) { + uint64_t remaining = 0; - if (limit && buf->f_blocks > limit) { curblock = (dquot->dq_dqb.dqb_curspace + dquot->dq_dqb.dqb_rsvspace) >> sb->s_blocksize_bits; - buf->f_blocks = limit; - buf->f_bfree = buf->f_bavail = - (buf->f_blocks > curblock) ? - (buf->f_blocks - curblock) : 0; + if (limit > curblock) + remaining = limit - curblock; + + buf->f_blocks = min(buf->f_blocks, limit); + buf->f_bfree = min(buf->f_bfree, remaining); + buf->f_bavail = min(buf->f_bavail, remaining); } limit = min_not_zero(dquot->dq_dqb.dqb_isoftlimit, dquot->dq_dqb.dqb_ihardlimit); - if (limit && buf->f_files > limit) { - buf->f_files = limit; - buf->f_ffree = - (buf->f_files > dquot->dq_dqb.dqb_curinodes) ? - (buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0; + if (limit) { + uint64_t remaining = 0; + + if (limit > dquot->dq_dqb.dqb_curinodes) + remaining = limit - dquot->dq_dqb.dqb_curinodes; + + buf->f_files = min(buf->f_files, limit); + buf->f_ffree = min(buf->f_ffree, remaining); } spin_unlock(&dquot->dq_dqb_lock);

1 week, 3 days

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FAILED: patch "[PATCH] f2fs: don't over-report free space or inodes in statvfs" failed to apply to 6.12-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.12-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.12.y git checkout FETCH_HEAD git cherry-pick -x a9201960623287927bf5776de3f70fb2fbde7e02 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025062050-moistness-depletion-5e57@gregkh' --subject-prefix 'PATCH 6.12.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From a9201960623287927bf5776de3f70fb2fbde7e02 Mon Sep 17 00:00:00 2001 From: Chao Yu <chao(a)kernel.org> Date: Tue, 13 May 2025 19:25:38 +0800 Subject: [PATCH] f2fs: don't over-report free space or inodes in statvfs This fixes an analogus bug that was fixed in modern filesystems: a) xfs in commit 4b8d867ca6e2 ("xfs: don't over-report free space or inodes in statvfs") b) ext4 in commit f87d3af74193 ("ext4: don't over-report free space or inodes in statvfs") where statfs can report misleading / incorrect information where project quota is enabled, and the free space is less than the remaining quota. This commit will resolve a test failure in generic/762 which tests for this bug. generic/762 - output mismatch (see /share/git/fstests/results//generic/762.out.bad) --- tests/generic/762.out 2025-04-15 10:21:53.371067071 +0800 +++ /share/git/fstests/results//generic/762.out.bad 2025-05-13 16:13:37.000000000 +0800 @@ -6,8 +6,10 @@ root blocks2 is in range dir blocks2 is in range root bavail2 is in range -dir bavail2 is in range +dir bavail2 has value of 1539066 +dir bavail2 is NOT in range 304734.87 .. 310891.13 root blocks3 is in range ... (Run 'diff -u /share/git/fstests/tests/generic/762.out /share/git/fstests/results//generic/762.out.bad' to see the entire diff) HINT: You _MAY_ be missing kernel fix: XXXXXXXXXXXXXX xfs: don't over-report free space or inodes in statvfs Cc: stable(a)kernel.org Fixes: ddc34e328d06 ("f2fs: introduce f2fs_statfs_project") Signed-off-by: Chao Yu <chao(a)kernel.org> Signed-off-by: Jaegeuk Kim <jaegeuk(a)kernel.org> diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index b65d24a39d03..6744b8c65bc8 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -1808,26 +1808,32 @@ static int f2fs_statfs_project(struct super_block *sb, limit = min_not_zero(dquot->dq_dqb.dqb_bsoftlimit, dquot->dq_dqb.dqb_bhardlimit); - if (limit) - limit >>= sb->s_blocksize_bits; + limit >>= sb->s_blocksize_bits; + + if (limit) { + uint64_t remaining = 0; - if (limit && buf->f_blocks > limit) { curblock = (dquot->dq_dqb.dqb_curspace + dquot->dq_dqb.dqb_rsvspace) >> sb->s_blocksize_bits; - buf->f_blocks = limit; - buf->f_bfree = buf->f_bavail = - (buf->f_blocks > curblock) ? - (buf->f_blocks - curblock) : 0; + if (limit > curblock) + remaining = limit - curblock; + + buf->f_blocks = min(buf->f_blocks, limit); + buf->f_bfree = min(buf->f_bfree, remaining); + buf->f_bavail = min(buf->f_bavail, remaining); } limit = min_not_zero(dquot->dq_dqb.dqb_isoftlimit, dquot->dq_dqb.dqb_ihardlimit); - if (limit && buf->f_files > limit) { - buf->f_files = limit; - buf->f_ffree = - (buf->f_files > dquot->dq_dqb.dqb_curinodes) ? - (buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0; + if (limit) { + uint64_t remaining = 0; + + if (limit > dquot->dq_dqb.dqb_curinodes) + remaining = limit - dquot->dq_dqb.dqb_curinodes; + + buf->f_files = min(buf->f_files, limit); + buf->f_ffree = min(buf->f_ffree, remaining); } spin_unlock(&dquot->dq_dqb_lock);

1 week, 3 days

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FAILED: patch "[PATCH] f2fs: don't over-report free space or inodes in statvfs" failed to apply to 6.6-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.6-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.6.y git checkout FETCH_HEAD git cherry-pick -x a9201960623287927bf5776de3f70fb2fbde7e02 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025062051-wrecker-sarcasm-5e84@gregkh' --subject-prefix 'PATCH 6.6.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From a9201960623287927bf5776de3f70fb2fbde7e02 Mon Sep 17 00:00:00 2001 From: Chao Yu <chao(a)kernel.org> Date: Tue, 13 May 2025 19:25:38 +0800 Subject: [PATCH] f2fs: don't over-report free space or inodes in statvfs This fixes an analogus bug that was fixed in modern filesystems: a) xfs in commit 4b8d867ca6e2 ("xfs: don't over-report free space or inodes in statvfs") b) ext4 in commit f87d3af74193 ("ext4: don't over-report free space or inodes in statvfs") where statfs can report misleading / incorrect information where project quota is enabled, and the free space is less than the remaining quota. This commit will resolve a test failure in generic/762 which tests for this bug. generic/762 - output mismatch (see /share/git/fstests/results//generic/762.out.bad) --- tests/generic/762.out 2025-04-15 10:21:53.371067071 +0800 +++ /share/git/fstests/results//generic/762.out.bad 2025-05-13 16:13:37.000000000 +0800 @@ -6,8 +6,10 @@ root blocks2 is in range dir blocks2 is in range root bavail2 is in range -dir bavail2 is in range +dir bavail2 has value of 1539066 +dir bavail2 is NOT in range 304734.87 .. 310891.13 root blocks3 is in range ... (Run 'diff -u /share/git/fstests/tests/generic/762.out /share/git/fstests/results//generic/762.out.bad' to see the entire diff) HINT: You _MAY_ be missing kernel fix: XXXXXXXXXXXXXX xfs: don't over-report free space or inodes in statvfs Cc: stable(a)kernel.org Fixes: ddc34e328d06 ("f2fs: introduce f2fs_statfs_project") Signed-off-by: Chao Yu <chao(a)kernel.org> Signed-off-by: Jaegeuk Kim <jaegeuk(a)kernel.org> diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index b65d24a39d03..6744b8c65bc8 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -1808,26 +1808,32 @@ static int f2fs_statfs_project(struct super_block *sb, limit = min_not_zero(dquot->dq_dqb.dqb_bsoftlimit, dquot->dq_dqb.dqb_bhardlimit); - if (limit) - limit >>= sb->s_blocksize_bits; + limit >>= sb->s_blocksize_bits; + + if (limit) { + uint64_t remaining = 0; - if (limit && buf->f_blocks > limit) { curblock = (dquot->dq_dqb.dqb_curspace + dquot->dq_dqb.dqb_rsvspace) >> sb->s_blocksize_bits; - buf->f_blocks = limit; - buf->f_bfree = buf->f_bavail = - (buf->f_blocks > curblock) ? - (buf->f_blocks - curblock) : 0; + if (limit > curblock) + remaining = limit - curblock; + + buf->f_blocks = min(buf->f_blocks, limit); + buf->f_bfree = min(buf->f_bfree, remaining); + buf->f_bavail = min(buf->f_bavail, remaining); } limit = min_not_zero(dquot->dq_dqb.dqb_isoftlimit, dquot->dq_dqb.dqb_ihardlimit); - if (limit && buf->f_files > limit) { - buf->f_files = limit; - buf->f_ffree = - (buf->f_files > dquot->dq_dqb.dqb_curinodes) ? - (buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0; + if (limit) { + uint64_t remaining = 0; + + if (limit > dquot->dq_dqb.dqb_curinodes) + remaining = limit - dquot->dq_dqb.dqb_curinodes; + + buf->f_files = min(buf->f_files, limit); + buf->f_ffree = min(buf->f_ffree, remaining); } spin_unlock(&dquot->dq_dqb_lock);

1 week, 3 days

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FAILED: patch "[PATCH] f2fs: don't over-report free space or inodes in statvfs" failed to apply to 6.1-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.1-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.1.y git checkout FETCH_HEAD git cherry-pick -x a9201960623287927bf5776de3f70fb2fbde7e02 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025062051-overhang-enzyme-6989@gregkh' --subject-prefix 'PATCH 6.1.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From a9201960623287927bf5776de3f70fb2fbde7e02 Mon Sep 17 00:00:00 2001 From: Chao Yu <chao(a)kernel.org> Date: Tue, 13 May 2025 19:25:38 +0800 Subject: [PATCH] f2fs: don't over-report free space or inodes in statvfs This fixes an analogus bug that was fixed in modern filesystems: a) xfs in commit 4b8d867ca6e2 ("xfs: don't over-report free space or inodes in statvfs") b) ext4 in commit f87d3af74193 ("ext4: don't over-report free space or inodes in statvfs") where statfs can report misleading / incorrect information where project quota is enabled, and the free space is less than the remaining quota. This commit will resolve a test failure in generic/762 which tests for this bug. generic/762 - output mismatch (see /share/git/fstests/results//generic/762.out.bad) --- tests/generic/762.out 2025-04-15 10:21:53.371067071 +0800 +++ /share/git/fstests/results//generic/762.out.bad 2025-05-13 16:13:37.000000000 +0800 @@ -6,8 +6,10 @@ root blocks2 is in range dir blocks2 is in range root bavail2 is in range -dir bavail2 is in range +dir bavail2 has value of 1539066 +dir bavail2 is NOT in range 304734.87 .. 310891.13 root blocks3 is in range ... (Run 'diff -u /share/git/fstests/tests/generic/762.out /share/git/fstests/results//generic/762.out.bad' to see the entire diff) HINT: You _MAY_ be missing kernel fix: XXXXXXXXXXXXXX xfs: don't over-report free space or inodes in statvfs Cc: stable(a)kernel.org Fixes: ddc34e328d06 ("f2fs: introduce f2fs_statfs_project") Signed-off-by: Chao Yu <chao(a)kernel.org> Signed-off-by: Jaegeuk Kim <jaegeuk(a)kernel.org> diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index b65d24a39d03..6744b8c65bc8 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -1808,26 +1808,32 @@ static int f2fs_statfs_project(struct super_block *sb, limit = min_not_zero(dquot->dq_dqb.dqb_bsoftlimit, dquot->dq_dqb.dqb_bhardlimit); - if (limit) - limit >>= sb->s_blocksize_bits; + limit >>= sb->s_blocksize_bits; + + if (limit) { + uint64_t remaining = 0; - if (limit && buf->f_blocks > limit) { curblock = (dquot->dq_dqb.dqb_curspace + dquot->dq_dqb.dqb_rsvspace) >> sb->s_blocksize_bits; - buf->f_blocks = limit; - buf->f_bfree = buf->f_bavail = - (buf->f_blocks > curblock) ? - (buf->f_blocks - curblock) : 0; + if (limit > curblock) + remaining = limit - curblock; + + buf->f_blocks = min(buf->f_blocks, limit); + buf->f_bfree = min(buf->f_bfree, remaining); + buf->f_bavail = min(buf->f_bavail, remaining); } limit = min_not_zero(dquot->dq_dqb.dqb_isoftlimit, dquot->dq_dqb.dqb_ihardlimit); - if (limit && buf->f_files > limit) { - buf->f_files = limit; - buf->f_ffree = - (buf->f_files > dquot->dq_dqb.dqb_curinodes) ? - (buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0; + if (limit) { + uint64_t remaining = 0; + + if (limit > dquot->dq_dqb.dqb_curinodes) + remaining = limit - dquot->dq_dqb.dqb_curinodes; + + buf->f_files = min(buf->f_files, limit); + buf->f_ffree = min(buf->f_ffree, remaining); } spin_unlock(&dquot->dq_dqb_lock);

1 week, 3 days

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FAILED: patch "[PATCH] f2fs: don't over-report free space or inodes in statvfs" failed to apply to 6.15-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.15-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.15.y git checkout FETCH_HEAD git cherry-pick -x a9201960623287927bf5776de3f70fb2fbde7e02 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025062050-massager-elastic-cea0@gregkh' --subject-prefix 'PATCH 6.15.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From a9201960623287927bf5776de3f70fb2fbde7e02 Mon Sep 17 00:00:00 2001 From: Chao Yu <chao(a)kernel.org> Date: Tue, 13 May 2025 19:25:38 +0800 Subject: [PATCH] f2fs: don't over-report free space or inodes in statvfs This fixes an analogus bug that was fixed in modern filesystems: a) xfs in commit 4b8d867ca6e2 ("xfs: don't over-report free space or inodes in statvfs") b) ext4 in commit f87d3af74193 ("ext4: don't over-report free space or inodes in statvfs") where statfs can report misleading / incorrect information where project quota is enabled, and the free space is less than the remaining quota. This commit will resolve a test failure in generic/762 which tests for this bug. generic/762 - output mismatch (see /share/git/fstests/results//generic/762.out.bad) --- tests/generic/762.out 2025-04-15 10:21:53.371067071 +0800 +++ /share/git/fstests/results//generic/762.out.bad 2025-05-13 16:13:37.000000000 +0800 @@ -6,8 +6,10 @@ root blocks2 is in range dir blocks2 is in range root bavail2 is in range -dir bavail2 is in range +dir bavail2 has value of 1539066 +dir bavail2 is NOT in range 304734.87 .. 310891.13 root blocks3 is in range ... (Run 'diff -u /share/git/fstests/tests/generic/762.out /share/git/fstests/results//generic/762.out.bad' to see the entire diff) HINT: You _MAY_ be missing kernel fix: XXXXXXXXXXXXXX xfs: don't over-report free space or inodes in statvfs Cc: stable(a)kernel.org Fixes: ddc34e328d06 ("f2fs: introduce f2fs_statfs_project") Signed-off-by: Chao Yu <chao(a)kernel.org> Signed-off-by: Jaegeuk Kim <jaegeuk(a)kernel.org> diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index b65d24a39d03..6744b8c65bc8 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -1808,26 +1808,32 @@ static int f2fs_statfs_project(struct super_block *sb, limit = min_not_zero(dquot->dq_dqb.dqb_bsoftlimit, dquot->dq_dqb.dqb_bhardlimit); - if (limit) - limit >>= sb->s_blocksize_bits; + limit >>= sb->s_blocksize_bits; + + if (limit) { + uint64_t remaining = 0; - if (limit && buf->f_blocks > limit) { curblock = (dquot->dq_dqb.dqb_curspace + dquot->dq_dqb.dqb_rsvspace) >> sb->s_blocksize_bits; - buf->f_blocks = limit; - buf->f_bfree = buf->f_bavail = - (buf->f_blocks > curblock) ? - (buf->f_blocks - curblock) : 0; + if (limit > curblock) + remaining = limit - curblock; + + buf->f_blocks = min(buf->f_blocks, limit); + buf->f_bfree = min(buf->f_bfree, remaining); + buf->f_bavail = min(buf->f_bavail, remaining); } limit = min_not_zero(dquot->dq_dqb.dqb_isoftlimit, dquot->dq_dqb.dqb_ihardlimit); - if (limit && buf->f_files > limit) { - buf->f_files = limit; - buf->f_ffree = - (buf->f_files > dquot->dq_dqb.dqb_curinodes) ? - (buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0; + if (limit) { + uint64_t remaining = 0; + + if (limit > dquot->dq_dqb.dqb_curinodes) + remaining = limit - dquot->dq_dqb.dqb_curinodes; + + buf->f_files = min(buf->f_files, limit); + buf->f_ffree = min(buf->f_ffree, remaining); } spin_unlock(&dquot->dq_dqb_lock);

1 week, 3 days

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FAILED: patch "[PATCH] Input: gpio-keys - fix a sleep while atomic with PREEMPT_RT" failed to apply to 5.15-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.15-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.15.y git checkout FETCH_HEAD git cherry-pick -x f4a8f561d08e39f7833d4a278ebfb12a41eef15f # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025062008-carrousel-lazily-2f19@gregkh' --subject-prefix 'PATCH 5.15.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From f4a8f561d08e39f7833d4a278ebfb12a41eef15f Mon Sep 17 00:00:00 2001 From: Fabrice Gasnier <fabrice.gasnier(a)foss.st.com> Date: Fri, 30 May 2025 15:36:43 -0700 Subject: [PATCH] Input: gpio-keys - fix a sleep while atomic with PREEMPT_RT When enabling PREEMPT_RT, the gpio_keys_irq_timer() callback runs in hard irq context, but the input_event() takes a spin_lock, which isn't allowed there as it is converted to a rt_spin_lock(). [ 4054.289999] BUG: sleeping function called from invalid context at kernel/locking/spinlock_rt.c:48 [ 4054.290028] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 0, name: swapper/0 ... [ 4054.290195] __might_resched+0x13c/0x1f4 [ 4054.290209] rt_spin_lock+0x54/0x11c [ 4054.290219] input_event+0x48/0x80 [ 4054.290230] gpio_keys_irq_timer+0x4c/0x78 [ 4054.290243] __hrtimer_run_queues+0x1a4/0x438 [ 4054.290257] hrtimer_interrupt+0xe4/0x240 [ 4054.290269] arch_timer_handler_phys+0x2c/0x44 [ 4054.290283] handle_percpu_devid_irq+0x8c/0x14c [ 4054.290297] handle_irq_desc+0x40/0x58 [ 4054.290307] generic_handle_domain_irq+0x1c/0x28 [ 4054.290316] gic_handle_irq+0x44/0xcc Considering the gpio_keys_irq_isr() can run in any context, e.g. it can be threaded, it seems there's no point in requesting the timer isr to run in hard irq context. Relax the hrtimer not to use the hard context. Fixes: 019002f20cb5 ("Input: gpio-keys - use hrtimer for release timer") Suggested-by: Sebastian Andrzej Siewior <bigeasy(a)linutronix.de> Signed-off-by: Fabrice Gasnier <fabrice.gasnier(a)foss.st.com> Signed-off-by: Gatien Chevallier <gatien.chevallier(a)foss.st.com> Link: https://lore.kernel.org/r/20250528-gpio_keys_preempt_rt-v2-1-3fc55a9c3619@f… Cc: stable(a)vger.kernel.org Signed-off-by: Dmitry Torokhov <dmitry.torokhov(a)gmail.com> diff --git a/drivers/input/keyboard/gpio_keys.c b/drivers/input/keyboard/gpio_keys.c index 5c39a217b94c..d884538107c9 100644 --- a/drivers/input/keyboard/gpio_keys.c +++ b/drivers/input/keyboard/gpio_keys.c @@ -486,7 +486,7 @@ static irqreturn_t gpio_keys_irq_isr(int irq, void *dev_id) if (bdata->release_delay) hrtimer_start(&bdata->release_timer, ms_to_ktime(bdata->release_delay), - HRTIMER_MODE_REL_HARD); + HRTIMER_MODE_REL); out: return IRQ_HANDLED; } @@ -628,7 +628,7 @@ static int gpio_keys_setup_key(struct platform_device *pdev, bdata->release_delay = button->debounce_interval; hrtimer_setup(&bdata->release_timer, gpio_keys_irq_timer, - CLOCK_REALTIME, HRTIMER_MODE_REL_HARD); + CLOCK_REALTIME, HRTIMER_MODE_REL); isr = gpio_keys_irq_isr; irqflags = 0;

1 week, 3 days

1
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0 0

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