November 2024 - Linux-stable-mirror

[PATCH] tpm: Disable TPM on tpm2_create_primary() failure

by Jarkko Sakkinen

The earlier bug fix misplaced the error-label when dealing with the tpm2_create_primary() return value, which the original completely ignored. Cc: stable(a)vger.kernel.org Reported-by: Christoph Anton Mitterer <calestyo(a)scientia.org> Closes: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1087331 Fixes: cc7d8594342a ("tpm: Rollback tpm2_load_null()") Signed-off-by: Jarkko Sakkinen <jarkko(a)kernel.org> --- drivers/char/tpm/tpm2-sessions.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/char/tpm/tpm2-sessions.c b/drivers/char/tpm/tpm2-sessions.c index a7c1b162251b..b70165b588ec 100644 --- a/drivers/char/tpm/tpm2-sessions.c +++ b/drivers/char/tpm/tpm2-sessions.c @@ -953,10 +953,13 @@ static int tpm2_load_null(struct tpm_chip *chip, u32 *null_key) /* Deduce from the name change TPM interference: */ dev_err(&chip->dev, "null key integrity check failed\n"); tpm2_flush_context(chip, tmp_null_key); - chip->flags |= TPM_CHIP_FLAG_DISABLE; err: - return rc ? -ENODEV : 0; + if (rc) { + chip->flags |= TPM_CHIP_FLAG_DISABLE; + rc = -ENODEV; + } + return rc; } /** -- 2.47.0

11 months, 2 weeks

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[PATCH v3 1/3] maple_tree: simplify split calculation

by Wei Yang

The current calculation for splitting nodes tries to enforce a minimum span on the leaf nodes. This code is complex and never worked correctly to begin with, due to the min value being passed as 0 for all leaves. The calculation should just split the data as equally as possible between the new nodes. Note that b_end will be one more than the data, so the left side is still favoured in the calculation. The current code may also lead to a deficient node by not leaving enough data for the right side of the split. This issue is also addressed with the split calculation change. [liam: rephrase the change log] Fixes: 54a611b60590 ("Maple Tree: add new data structure") Signed-off-by: Wei Yang <richard.weiyang(a)gmail.com> CC: Liam R. Howlett <Liam.Howlett(a)Oracle.com> CC: Sidhartha Kumar <sidhartha.kumar(a)oracle.com> CC: Lorenzo Stoakes <lorenzo.stoakes(a)oracle.com> Cc: <stable(a)vger.kernel.org> --- v3: * Liam helps rephrase the change log * add fix tag and cc stable --- lib/maple_tree.c | 23 ++++++----------------- 1 file changed, 6 insertions(+), 17 deletions(-) diff --git a/lib/maple_tree.c b/lib/maple_tree.c index d0ae808f3a14..4f2950a1c38d 100644 --- a/lib/maple_tree.c +++ b/lib/maple_tree.c @@ -1863,11 +1863,11 @@ static inline int mab_no_null_split(struct maple_big_node *b_node, * Return: The first split location. The middle split is set in @mid_split. */ static inline int mab_calc_split(struct ma_state *mas, - struct maple_big_node *bn, unsigned char *mid_split, unsigned long min) + struct maple_big_node *bn, unsigned char *mid_split) { unsigned char b_end = bn->b_end; int split = b_end / 2; /* Assume equal split. */ - unsigned char slot_min, slot_count = mt_slots[bn->type]; + unsigned char slot_count = mt_slots[bn->type]; /* * To support gap tracking, all NULL entries are kept together and a node cannot @@ -1900,18 +1900,7 @@ static inline int mab_calc_split(struct ma_state *mas, split = b_end / 3; *mid_split = split * 2; } else { - slot_min = mt_min_slots[bn->type]; - *mid_split = 0; - /* - * Avoid having a range less than the slot count unless it - * causes one node to be deficient. - * NOTE: mt_min_slots is 1 based, b_end and split are zero. - */ - while ((split < slot_count - 1) && - ((bn->pivot[split] - min) < slot_count - 1) && - (b_end - split > slot_min)) - split++; } /* Avoid ending a node on a NULL entry */ @@ -2377,7 +2366,7 @@ static inline struct maple_enode static inline unsigned char mas_mab_to_node(struct ma_state *mas, struct maple_big_node *b_node, struct maple_enode **left, struct maple_enode **right, struct maple_enode **middle, - unsigned char *mid_split, unsigned long min) + unsigned char *mid_split) { unsigned char split = 0; unsigned char slot_count = mt_slots[b_node->type]; @@ -2390,7 +2379,7 @@ static inline unsigned char mas_mab_to_node(struct ma_state *mas, if (b_node->b_end < slot_count) { split = b_node->b_end; } else { - split = mab_calc_split(mas, b_node, mid_split, min); + split = mab_calc_split(mas, b_node, mid_split); *right = mas_new_ma_node(mas, b_node); } @@ -2877,7 +2866,7 @@ static void mas_spanning_rebalance(struct ma_state *mas, mast->bn->b_end--; mast->bn->type = mte_node_type(mast->orig_l->node); split = mas_mab_to_node(mas, mast->bn, &left, &right, &middle, - &mid_split, mast->orig_l->min); + &mid_split); mast_set_split_parents(mast, left, middle, right, split, mid_split); mast_cp_to_nodes(mast, left, middle, right, split, mid_split); @@ -3365,7 +3354,7 @@ static void mas_split(struct ma_state *mas, struct maple_big_node *b_node) if (mas_push_data(mas, height, &mast, false)) break; - split = mab_calc_split(mas, b_node, &mid_split, prev_l_mas.min); + split = mab_calc_split(mas, b_node, &mid_split); mast_split_data(&mast, mas, split); /* * Usually correct, mab_mas_cp in the above call overwrites -- 2.34.1

11 months, 2 weeks

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[PATCH v2] fsnotify: fix sending inotify event with unexpected filename

by Jan Kara

We got a report that adding a fanotify filsystem watch prevents tail -f from receiving events. Reproducer: 1. Create 3 windows / login sessions. Become root in each session. 2. Choose a mounted filesystem that is pretty quiet; I picked /boot. 3. In the first window, run: fsnotifywait -S -m /boot 4. In the second window, run: echo data >> /boot/foo 5. In the third window, run: tail -f /boot/foo 6. Go back to the second window and run: echo more data >> /boot/foo 7. Observe that the tail command doesn't show the new data. 8. In the first window, hit control-C to interrupt fsnotifywait. 9. In the second window, run: echo still more data >> /boot/foo 10. Observe that the tail command in the third window has now printed the missing data. When stracing tail, we observed that when fanotify filesystem mark is set, tail does get the inotify event, but the event is receieved with the filename: read(4, "\1\0\0\0\2\0\0\0\0\0\0\0\20\0\0\0foo\0\0\0\0\0\0\0\0\0\0\0\0\0", 50) = 32 This is unexpected, because tail is watching the file itself and not its parent and is inconsistent with the inotify event received by tail when fanotify filesystem mark is not set: read(4, "\1\0\0\0\2\0\0\0\0\0\0\0\0\0\0\0", 50) = 16 The inteference between different fsnotify groups was caused by the fact that the mark on the sb requires the filename, so the filename is passed to fsnotify(). Later on, fsnotify_handle_event() tries to take care of not passing the filename to groups (such as inotify) that are interested in the filename only when the parent is watching. But the logic was incorrect for the case that no group is watching the parent, some groups are watching the sb and some watching the inode. Reported-by: Miklos Szeredi <miklos(a)szeredi.hu> Fixes: 7372e79c9eb9 ("fanotify: fix logic of reporting name info with watched parent") Cc: stable(a)vger.kernel.org # 5.10+ Signed-off-by: Amir Goldstein <amir73il(a)gmail.com> Signed-off-by: Jan Kara <jack(a)suse.cz> --- fs/notify/fsnotify.c | 23 +++++++++++++---------- 1 file changed, 13 insertions(+), 10 deletions(-) This is what I plan to merge into my tree. diff --git a/fs/notify/fsnotify.c b/fs/notify/fsnotify.c index 82ae8254c068..f976949d2634 100644 --- a/fs/notify/fsnotify.c +++ b/fs/notify/fsnotify.c @@ -333,16 +333,19 @@ static int fsnotify_handle_event(struct fsnotify_group *group, __u32 mask, if (!inode_mark) return 0; - if (mask & FS_EVENT_ON_CHILD) { - /* - * Some events can be sent on both parent dir and child marks - * (e.g. FS_ATTRIB). If both parent dir and child are - * watching, report the event once to parent dir with name (if - * interested) and once to child without name (if interested). - * The child watcher is expecting an event without a file name - * and without the FS_EVENT_ON_CHILD flag. - */ - mask &= ~FS_EVENT_ON_CHILD; + /* + * Some events can be sent on both parent dir and child marks (e.g. + * FS_ATTRIB). If both parent dir and child are watching, report the + * event once to parent dir with name (if interested) and once to child + * without name (if interested). + * + * In any case regardless whether the parent is watching or not, the + * child watcher is expecting an event without the FS_EVENT_ON_CHILD + * flag. The file name is expected if and only if this is a directory + * event. + */ + mask &= ~FS_EVENT_ON_CHILD; + if (!(mask & ALL_FSNOTIFY_DIRENT_EVENTS)) { dir = NULL; name = NULL; } -- 2.35.3

11 months, 2 weeks

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[PATCH v6 2/8] KVM: SVM: Fix snp_context_create error reporting

by Dionna Glaze

Failure to allocate should not return -ENOTTY. Command failure has multiple possible error modes. Fixes: 136d8bc931c8 ("KVM: SEV: Add KVM_SEV_SNP_LAUNCH_START command") CC: Sean Christopherson <seanjc(a)google.com> CC: Paolo Bonzini <pbonzini(a)redhat.com> CC: Thomas Gleixner <tglx(a)linutronix.de> CC: Ingo Molnar <mingo(a)redhat.com> CC: Borislav Petkov <bp(a)alien8.de> CC: Dave Hansen <dave.hansen(a)linux.intel.com> CC: Ashish Kalra <ashish.kalra(a)amd.com> CC: Tom Lendacky <thomas.lendacky(a)amd.com> CC: John Allen <john.allen(a)amd.com> CC: Herbert Xu <herbert(a)gondor.apana.org.au> CC: "David S. Miller" <davem(a)davemloft.net> CC: Michael Roth <michael.roth(a)amd.com> CC: Luis Chamberlain <mcgrof(a)kernel.org> CC: Russ Weight <russ.weight(a)linux.dev> CC: Danilo Krummrich <dakr(a)redhat.com> CC: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> CC: "Rafael J. Wysocki" <rafael(a)kernel.org> CC: Tianfei zhang <tianfei.zhang(a)intel.com> CC: Alexey Kardashevskiy <aik(a)amd.com> CC: stable(a)vger.kernel.org Signed-off-by: Dionna Glaze <dionnaglaze(a)google.com> --- arch/x86/kvm/svm/sev.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c index 357906375ec59..d0e0152aefb32 100644 --- a/arch/x86/kvm/svm/sev.c +++ b/arch/x86/kvm/svm/sev.c @@ -2171,7 +2171,7 @@ static void *snp_context_create(struct kvm *kvm, struct kvm_sev_cmd *argp) /* Allocate memory for context page */ context = snp_alloc_firmware_page(GFP_KERNEL_ACCOUNT); if (!context) - return NULL; + return ERR_PTR(-ENOMEM); data.address = __psp_pa(context); rc = __sev_issue_cmd(argp->sev_fd, SEV_CMD_SNP_GCTX_CREATE, &data, &argp->error); @@ -2179,7 +2179,7 @@ static void *snp_context_create(struct kvm *kvm, struct kvm_sev_cmd *argp) pr_warn("Failed to create SEV-SNP context, rc %d fw_error %d", rc, argp->error); snp_free_firmware_page(context); - return NULL; + return ERR_PTR(rc); } return context; @@ -2227,8 +2227,8 @@ static int snp_launch_start(struct kvm *kvm, struct kvm_sev_cmd *argp) return -EINVAL; sev->snp_context = snp_context_create(kvm, argp); - if (!sev->snp_context) - return -ENOTTY; + if (IS_ERR(sev->snp_context)) + return PTR_ERR(sev->snp_context); start.gctx_paddr = __psp_pa(sev->snp_context); start.policy = params.policy; -- 2.47.0.277.g8800431eea-goog

11 months, 2 weeks

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[PATCH 5.4] ftrace: Fix possible use-after-free issue in ftrace_location()

by Hagar Hemdan

From: Zheng Yejian <zhengyejian1(a)huawei.com> commit e60b613df8b6253def41215402f72986fee3fc8d upstream. KASAN reports a bug: BUG: KASAN: use-after-free in ftrace_location+0x90/0x120 Read of size 8 at addr ffff888141d40010 by task insmod/424 CPU: 8 PID: 424 Comm: insmod Tainted: G W 6.9.0-rc2+ [...] Call Trace: <TASK> dump_stack_lvl+0x68/0xa0 print_report+0xcf/0x610 kasan_report+0xb5/0xe0 ftrace_location+0x90/0x120 register_kprobe+0x14b/0xa40 kprobe_init+0x2d/0xff0 [kprobe_example] do_one_initcall+0x8f/0x2d0 do_init_module+0x13a/0x3c0 load_module+0x3082/0x33d0 init_module_from_file+0xd2/0x130 __x64_sys_finit_module+0x306/0x440 do_syscall_64+0x68/0x140 entry_SYSCALL_64_after_hwframe+0x71/0x79 The root cause is that, in ftrace_location_range(), ftrace record of some address is being searched in ftrace pages of some module, but those ftrace pages at the same time is being freed in ftrace_release_mod() as the corresponding module is being deleted: CPU1 | CPU2 register_kprobes() { | delete_module() { check_kprobe_address_safe() { | arch_check_ftrace_location() { | ftrace_location() { | lookup_rec() // USE! | ftrace_release_mod() // Free! To fix this issue: 1. Hold rcu lock as accessing ftrace pages in ftrace_location_range(); 2. Use ftrace_location_range() instead of lookup_rec() in ftrace_location(); 3. Call synchronize_rcu() before freeing any ftrace pages both in ftrace_process_locs()/ftrace_release_mod()/ftrace_free_mem(). Link: https://lore.kernel.org/linux-trace-kernel/20240509192859.1273558-1-zhengye… Cc: stable(a)vger.kernel.org Cc: <mhiramat(a)kernel.org> Cc: <mark.rutland(a)arm.com> Cc: <mathieu.desnoyers(a)efficios.com> Fixes: ae6aa16fdc16 ("kprobes: introduce ftrace based optimization") Suggested-by: Steven Rostedt <rostedt(a)goodmis.org> Signed-off-by: Zheng Yejian <zhengyejian1(a)huawei.com> Signed-off-by: Steven Rostedt (Google) <rostedt(a)goodmis.org> [Hagar: Modified to apply on v5.4.y] Signed-off-by: Hagar Hemdan <hagarhem(a)amazon.com> --- only compile tested. --- kernel/trace/ftrace.c | 30 +++++++++++++++++++++--------- 1 file changed, 21 insertions(+), 9 deletions(-) diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index 412505d94865..60bf8a6d55ce 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -1552,7 +1552,9 @@ unsigned long ftrace_location_range(unsigned long start, unsigned long end) struct ftrace_page *pg; struct dyn_ftrace *rec; struct dyn_ftrace key; + unsigned long ip = 0; + rcu_read_lock(); key.ip = start; key.flags = end; /* overload flags, as it is unsigned long */ @@ -1565,10 +1567,13 @@ unsigned long ftrace_location_range(unsigned long start, unsigned long end) sizeof(struct dyn_ftrace), ftrace_cmp_recs); if (rec) - return rec->ip; + { + ip = rec->ip; + break; + } } - - return 0; + rcu_read_unlock(); + return ip; } /** @@ -5736,6 +5741,8 @@ static int ftrace_process_locs(struct module *mod, /* We should have used all pages unless we skipped some */ if (pg_unuse) { WARN_ON(!skipped); + /* Need to synchronize with ftrace_location_range() */ + synchronize_rcu(); ftrace_free_pages(pg_unuse); } return ret; @@ -5889,6 +5896,9 @@ void ftrace_release_mod(struct module *mod) out_unlock: mutex_unlock(&ftrace_lock); + /* Need to synchronize with ftrace_location_range() */ + if (tmp_page) + synchronize_rcu(); for (pg = tmp_page; pg; pg = tmp_page) { /* Needs to be called outside of ftrace_lock */ @@ -6196,6 +6206,7 @@ void ftrace_free_mem(struct module *mod, void *start_ptr, void *end_ptr) unsigned long start = (unsigned long)(start_ptr); unsigned long end = (unsigned long)(end_ptr); struct ftrace_page **last_pg = &ftrace_pages_start; + struct ftrace_page *tmp_page = NULL; struct ftrace_page *pg; struct dyn_ftrace *rec; struct dyn_ftrace key; @@ -6239,12 +6250,8 @@ void ftrace_free_mem(struct module *mod, void *start_ptr, void *end_ptr) ftrace_update_tot_cnt--; if (!pg->index) { *last_pg = pg->next; - if (pg->records) { - free_pages((unsigned long)pg->records, pg->order); - ftrace_number_of_pages -= 1 << pg->order; - } - ftrace_number_of_groups--; - kfree(pg); + pg->next = tmp_page; + tmp_page = pg; pg = container_of(last_pg, struct ftrace_page, next); if (!(*last_pg)) ftrace_pages = pg; @@ -6261,6 +6268,11 @@ void ftrace_free_mem(struct module *mod, void *start_ptr, void *end_ptr) clear_func_from_hashes(func); kfree(func); } + /* Need to synchronize with ftrace_location_range() */ + if (tmp_page) { + synchronize_rcu(); + ftrace_free_pages(tmp_page); + } } void __init ftrace_free_init_mem(void) -- 2.40.1

11 months, 2 weeks

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[PATCH v2 00/12] mwifiex: two fixes and cleanup

by Sascha Hauer

These are a few patches broken out from [1]. Kalle requested to limit the number of patches per series to approximately 12 and Francesco to move the fixes to the front of the series, so here we go. First two patches are fixes. First one is for host mlme support which currently is in wireless-next, so no stable tag needed, second one has a stable tag. The remaining patches except the last one I have chosen to upstream first. I'll continue with the other patches after having this series in shape and merged. The last one is a new patch not included in [1]. Sascha [1] https://lore.kernel.org/all/20240820-mwifiex-cleanup-v1-0-320d8de4a4b7@peng… Signed-off-by: Sascha Hauer <s.hauer(a)pengutronix.de> --- Changes in v2: - Add refence to 7bff9c974e1a in commit message of "wifi: mwifiex: drop asynchronous init waiting code" - Add extra sentence about bss_started in "wifi: mwifiex: move common settings out of switch/case" - Kill now unused MWIFIEX_BSS_TYPE_ANY - Collect reviewed-by tags from Francesco Dolcini - Link to v1: https://lore.kernel.org/r/20240826-mwifiex-cleanup-1-v1-0-56e6f8e056ec@peng… --- Sascha Hauer (12): wifi: mwifiex: add missing locking wifi: mwifiex: fix MAC address handling wifi: mwifiex: deduplicate code in mwifiex_cmd_tx_rate_cfg() wifi: mwifiex: use adapter as context pointer for mwifiex_hs_activated_event() wifi: mwifiex: drop unnecessary initialization wifi: mwifiex: make region_code_mapping_t const wifi: mwifiex: pass adapter to mwifiex_dnld_cmd_to_fw() wifi: mwifiex: simplify mwifiex_setup_ht_caps() wifi: mwifiex: fix indention wifi: mwifiex: make locally used function static wifi: mwifiex: move common settings out of switch/case wifi: mwifiex: drop asynchronous init waiting code drivers/net/wireless/marvell/mwifiex/cfg80211.c | 38 ++++------ drivers/net/wireless/marvell/mwifiex/cfp.c | 4 +- drivers/net/wireless/marvell/mwifiex/cmdevt.c | 76 +++++++------------- drivers/net/wireless/marvell/mwifiex/decl.h | 1 - drivers/net/wireless/marvell/mwifiex/init.c | 19 ++--- drivers/net/wireless/marvell/mwifiex/main.c | 94 +++++++++---------------- drivers/net/wireless/marvell/mwifiex/main.h | 16 ++--- drivers/net/wireless/marvell/mwifiex/sta_cmd.c | 49 ++++--------- drivers/net/wireless/marvell/mwifiex/txrx.c | 3 +- drivers/net/wireless/marvell/mwifiex/util.c | 22 +----- drivers/net/wireless/marvell/mwifiex/wmm.c | 12 ++-- 11 files changed, 105 insertions(+), 229 deletions(-) --- base-commit: 67a72043aa2e6f60f7bbe7bfa598ba168f16d04f change-id: 20240826-mwifiex-cleanup-1-b5035c7faff6 Best regards, -- Sascha Hauer <s.hauer(a)pengutronix.de>

11 months, 2 weeks

3
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[PATCH v6.1 0/2] uprobe: avoid out-of-bounds memory access of fetching args

by Vamsi Krishna Brahmajosyula

Include additional patch (Andrii Nakryiko) since its a dependency Andrii Nakryiko (1): uprobes: encapsulate preparation of uprobe args buffer Qiao Ma (1): uprobe: avoid out-of-bounds memory access of fetching args kernel/trace/trace_uprobe.c | 86 ++++++++++++++++++++----------------- 1 file changed, 46 insertions(+), 40 deletions(-) -- 2.39.4

11 months, 2 weeks

1
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[PATCH RESEND] PM: domains: Fix return value of API dev_pm_get_subsys_data()

by Zijun Hu

From: Zijun Hu <quic_zijuhu(a)quicinc.com> dev_pm_get_subsys_data() has below 2 issues under condition (@dev->power.subsys_data != NULL): - it will do unnecessary kzalloc() and kfree(). - it will return -ENOMEM if the kzalloc() fails, that is wrong since the kzalloc() is not needed. Fixed by not doing kzalloc() and returning 0 for the condition. Fixes: ef27bed1870d ("PM: Reference counting of power.subsys_data") Cc: stable(a)vger.kernel.org Signed-off-by: Zijun Hu <quic_zijuhu(a)quicinc.com> --- drivers/base/power/common.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/base/power/common.c b/drivers/base/power/common.c index 8c34ae1cd8d5..13cb1f2a06e7 100644 --- a/drivers/base/power/common.c +++ b/drivers/base/power/common.c @@ -26,6 +26,14 @@ int dev_pm_get_subsys_data(struct device *dev) { struct pm_subsys_data *psd; + spin_lock_irq(&dev->power.lock); + if (dev->power.subsys_data) { + dev->power.subsys_data->refcount++; + spin_unlock_irq(&dev->power.lock); + return 0; + } + spin_unlock_irq(&dev->power.lock); + psd = kzalloc(sizeof(*psd), GFP_KERNEL); if (!psd) return -ENOMEM; --- base-commit: 9852d85ec9d492ebef56dc5f229416c925758edc change-id: 20241010-fix_dev_pm_get_subsys_data-2478bb200fde Best regards, -- Zijun Hu <quic_zijuhu(a)quicinc.com>

11 months, 2 weeks

2
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[PATCH 0/3] driver core: class: Fix bug and code improvements for class APIs

by Zijun Hu

This patch series is to - Fix an potential wild pointer dereference bug for API: class_dev_iter_next() - Improve the following APIs: class_for_each_device() class_find_device() Signed-off-by: Zijun Hu <quic_zijuhu(a)quicinc.com> --- Zijun Hu (3): driver core: class: Fix wild pointer dereference in API class_dev_iter_next() driver core: class: Correct WARN() message in APIs class_(for_each|find)_device() driver core: class: Delete a redundant check in APIs class_(for_each|find)_device() drivers/base/class.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) --- base-commit: 9bd133f05b1dca5ca4399a76d04d0f6f4d454e44 change-id: 20241104-class_fix-f176bd9eba22 Best regards, -- Zijun Hu <quic_zijuhu(a)quicinc.com>

11 months, 2 weeks

2
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New GaN Wall charger 45W-Sample!

by Vicky

11 months, 2 weeks

1
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