October 2024 - Linux-stable-mirror

FAILED: patch "[PATCH] bpf: Fix use-after-free in bpf_uprobe_multi_link_attach()" failed to apply to 6.10-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.10-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-6.10.y git checkout FETCH_HEAD git cherry-pick -x 5fe6e308abaea082c20fbf2aa5df8e14495622cf # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024100250-celibacy-doubling-466e@gregkh' --subject-prefix 'PATCH 6.10.y' HEAD^.. Possible dependencies: 5fe6e308abae ("bpf: Fix use-after-free in bpf_uprobe_multi_link_attach()") 3c83a9ad0295 ("uprobes: make uprobe_register() return struct uprobe *") e04332ebc8ac ("uprobes: kill uprobe_register_refctr()") db61e6a4eee5 ("selftests/bpf: fix uprobe.path leak in bpf_testmod") f42a58ffb8bb ("selftests/bpf: Add uretprobe syscall test for regs changes") 3e8e25761a40 ("selftests/bpf: Add uretprobe syscall test for regs integrity") thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 5fe6e308abaea082c20fbf2aa5df8e14495622cf Mon Sep 17 00:00:00 2001 From: Oleg Nesterov <oleg(a)redhat.com> Date: Tue, 13 Aug 2024 17:25:24 +0200 Subject: [PATCH] bpf: Fix use-after-free in bpf_uprobe_multi_link_attach() If bpf_link_prime() fails, bpf_uprobe_multi_link_attach() goes to the error_free label and frees the array of bpf_uprobe's without calling bpf_uprobe_unregister(). This leaks bpf_uprobe->uprobe and worse, this frees bpf_uprobe->consumer without removing it from the uprobe->consumers list. Fixes: 89ae89f53d20 ("bpf: Add multi uprobe link") Closes: https://lore.kernel.org/all/000000000000382d39061f59f2dd@google.com/ Reported-by: syzbot+f7a1c2c2711e4a780f19(a)syzkaller.appspotmail.com Signed-off-by: Oleg Nesterov <oleg(a)redhat.com> Signed-off-by: Peter Zijlstra (Intel) <peterz(a)infradead.org> Acked-by: Andrii Nakryiko <andrii(a)kernel.org> Acked-by: Jiri Olsa <jolsa(a)kernel.org> Tested-by: syzbot+f7a1c2c2711e4a780f19(a)syzkaller.appspotmail.com Cc: stable(a)vger.kernel.org Link: https://lore.kernel.org/r/20240813152524.GA7292@redhat.com diff --git a/kernel/trace/bpf_trace.c b/kernel/trace/bpf_trace.c index 4e391daafa64..90cd30e9723e 100644 --- a/kernel/trace/bpf_trace.c +++ b/kernel/trace/bpf_trace.c @@ -3484,17 +3484,20 @@ int bpf_uprobe_multi_link_attach(const union bpf_attr *attr, struct bpf_prog *pr &uprobes[i].consumer); if (IS_ERR(uprobes[i].uprobe)) { err = PTR_ERR(uprobes[i].uprobe); - bpf_uprobe_unregister(uprobes, i); - goto error_free; + link->cnt = i; + goto error_unregister; } } err = bpf_link_prime(&link->link, &link_primer); if (err) - goto error_free; + goto error_unregister; return bpf_link_settle(&link_primer); +error_unregister: + bpf_uprobe_unregister(uprobes, link->cnt); + error_free: kvfree(uprobes); kfree(link);

9 months

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FAILED: patch "[PATCH] debugfs show actual source in /proc/mounts" failed to apply to 6.10-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.10-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-6.10.y git checkout FETCH_HEAD git cherry-pick -x 3a987b88a42593875f6345188ca33731c7df728c # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024100128-prison-ploy-dfd6@gregkh' --subject-prefix 'PATCH 6.10.y' HEAD^.. Possible dependencies: 3a987b88a425 ("debugfs show actual source in /proc/mounts") 49abee5991e1 ("debugfs: Convert to new uid/gid option parsing helpers") thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 3a987b88a42593875f6345188ca33731c7df728c Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Marc=20Aur=C3=A8le=20La=20France?= <tsi(a)tuyoix.net> Date: Sat, 10 Aug 2024 13:25:27 -0600 Subject: [PATCH] debugfs show actual source in /proc/mounts MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit After its conversion to the new mount API, debugfs displays "none" in /proc/mounts instead of the actual source. Fix this by recognising its "source" mount option. Signed-off-by: Marc Aurèle La France <tsi(a)tuyoix.net> Link: https://lore.kernel.org/r/e439fae2-01da-234b-75b9-2a7951671e27@tuyoix.net Fixes: a20971c18752 ("vfs: Convert debugfs to use the new mount API") Cc: stable(a)vger.kernel.org # 6.10.x: 49abee5991e1: debugfs: Convert to new uid/gid option parsing helpers Signed-off-by: Christian Brauner <brauner(a)kernel.org> diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c index 91521576f500..66d9b3b4c588 100644 --- a/fs/debugfs/inode.c +++ b/fs/debugfs/inode.c @@ -89,12 +89,14 @@ enum { Opt_uid, Opt_gid, Opt_mode, + Opt_source, }; static const struct fs_parameter_spec debugfs_param_specs[] = { fsparam_gid ("gid", Opt_gid), fsparam_u32oct ("mode", Opt_mode), fsparam_uid ("uid", Opt_uid), + fsparam_string ("source", Opt_source), {} }; @@ -126,6 +128,12 @@ static int debugfs_parse_param(struct fs_context *fc, struct fs_parameter *param case Opt_mode: opts->mode = result.uint_32 & S_IALLUGO; break; + case Opt_source: + if (fc->source) + return invalfc(fc, "Multiple sources specified"); + fc->source = param->string; + param->string = NULL; + break; /* * We might like to report bad mount options here; * but traditionally debugfs has ignored all mount options

9 months

3
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FAILED: patch "[PATCH] io_uring/sqpoll: do not allow pinning outside of cpuset" 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 f011c9cf04c06f16b24f583d313d3c012e589e50 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024100131-number-deface-36a6@gregkh' --subject-prefix 'PATCH 5.15.y' HEAD^.. Possible dependencies: f011c9cf04c0 ("io_uring/sqpoll: do not allow pinning outside of cpuset") 17437f311490 ("io_uring: move SQPOLL related handling into its own file") 59915143e89f ("io_uring: move timeout opcodes and handling into its own file") e418bbc97bff ("io_uring: move our reference counting into a header") 36404b09aa60 ("io_uring: move msg_ring into its own file") f9ead18c1058 ("io_uring: split network related opcodes into its own file") e0da14def1ee ("io_uring: move statx handling to its own file") a9c210cebe13 ("io_uring: move epoll handler to its own file") 4cf90495281b ("io_uring: add a dummy -EOPNOTSUPP prep handler") 99f15d8d6136 ("io_uring: move uring_cmd handling to its own file") cd40cae29ef8 ("io_uring: split out open/close operations") 453b329be5ea ("io_uring: separate out file table handling code") f4c163dd7d4b ("io_uring: split out fadvise/madvise operations") 0d5847274037 ("io_uring: split out fs related sync/fallocate functions") 531113bbd5bf ("io_uring: split out splice related operations") 11aeb71406dd ("io_uring: split out filesystem related operations") e28683bdfc2f ("io_uring: move nop into its own file") 5e2a18d93fec ("io_uring: move xattr related opcodes to its own file") 97b388d70b53 ("io_uring: handle completions in the core") de23077eda61 ("io_uring: set completion results upfront") thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From f011c9cf04c06f16b24f583d313d3c012e589e50 Mon Sep 17 00:00:00 2001 From: Felix Moessbauer <felix.moessbauer(a)siemens.com> Date: Mon, 9 Sep 2024 17:00:36 +0200 Subject: [PATCH] io_uring/sqpoll: do not allow pinning outside of cpuset The submit queue polling threads are userland threads that just never exit to the userland. When creating the thread with IORING_SETUP_SQ_AFF, the affinity of the poller thread is set to the cpu specified in sq_thread_cpu. However, this CPU can be outside of the cpuset defined by the cgroup cpuset controller. This violates the rules defined by the cpuset controller and is a potential issue for realtime applications. In b7ed6d8ffd6 we fixed the default affinity of the poller thread, in case no explicit pinning is required by inheriting the one of the creating task. In case of explicit pinning, the check is more complicated, as also a cpu outside of the parent cpumask is allowed. We implemented this by using cpuset_cpus_allowed (that has support for cgroup cpusets) and testing if the requested cpu is in the set. Fixes: 37d1e2e3642e ("io_uring: move SQPOLL thread io-wq forked worker") Cc: stable(a)vger.kernel.org # 6.1+ Signed-off-by: Felix Moessbauer <felix.moessbauer(a)siemens.com> Link: https://lore.kernel.org/r/20240909150036.55921-1-felix.moessbauer@siemens.c… Signed-off-by: Jens Axboe <axboe(a)kernel.dk> diff --git a/io_uring/sqpoll.c b/io_uring/sqpoll.c index e545bf240d35..272df9d00f45 100644 --- a/io_uring/sqpoll.c +++ b/io_uring/sqpoll.c @@ -10,6 +10,7 @@ #include <linux/slab.h> #include <linux/audit.h> #include <linux/security.h> +#include <linux/cpuset.h> #include <linux/io_uring.h> #include <uapi/linux/io_uring.h> @@ -460,10 +461,12 @@ __cold int io_sq_offload_create(struct io_ring_ctx *ctx, return 0; if (p->flags & IORING_SETUP_SQ_AFF) { + struct cpumask allowed_mask; int cpu = p->sq_thread_cpu; ret = -EINVAL; - if (cpu >= nr_cpu_ids || !cpu_online(cpu)) + cpuset_cpus_allowed(current, &allowed_mask); + if (!cpumask_test_cpu(cpu, &allowed_mask)) goto err_sqpoll; sqd->sq_cpu = cpu; } else {

9 months

3
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FAILED: patch "[PATCH] icmp: change the order of rate limits" 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 8c2bd38b95f75f3d2a08c93e35303e26d480d24e # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024100127-uninsured-onyx-f79a@gregkh' --subject-prefix 'PATCH 6.1.y' HEAD^.. Possible dependencies: 8c2bd38b95f7 ("icmp: change the order of rate limits") d0941130c935 ("icmp: Add counters for rate limits") 8032bf1233a7 ("treewide: use get_random_u32_below() instead of deprecated function") thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 8c2bd38b95f75f3d2a08c93e35303e26d480d24e Mon Sep 17 00:00:00 2001 From: Eric Dumazet <edumazet(a)google.com> Date: Thu, 29 Aug 2024 14:46:39 +0000 Subject: [PATCH] icmp: change the order of rate limits ICMP messages are ratelimited : After the blamed commits, the two rate limiters are applied in this order: 1) host wide ratelimit (icmp_global_allow()) 2) Per destination ratelimit (inetpeer based) In order to avoid side-channels attacks, we need to apply the per destination check first. This patch makes the following change : 1) icmp_global_allow() checks if the host wide limit is reached. But credits are not yet consumed. This is deferred to 3) 2) The per destination limit is checked/updated. This might add a new node in inetpeer tree. 3) icmp_global_consume() consumes tokens if prior operations succeeded. This means that host wide ratelimit is still effective in keeping inetpeer tree small even under DDOS. As a bonus, I removed icmp_global.lock as the fast path can use a lock-free operation. Fixes: c0303efeab73 ("net: reduce cycles spend on ICMP replies that gets rate limited") Fixes: 4cdf507d5452 ("icmp: add a global rate limitation") Reported-by: Keyu Man <keyu.man(a)email.ucr.edu> Signed-off-by: Eric Dumazet <edumazet(a)google.com> Reviewed-by: David Ahern <dsahern(a)kernel.org> Cc: Jesper Dangaard Brouer <hawk(a)kernel.org> Cc: stable(a)vger.kernel.org Link: https://patch.msgid.link/20240829144641.3880376-2-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba(a)kernel.org> diff --git a/include/net/ip.h b/include/net/ip.h index c5606cadb1a5..82248813619e 100644 --- a/include/net/ip.h +++ b/include/net/ip.h @@ -795,6 +795,8 @@ static inline void ip_cmsg_recv(struct msghdr *msg, struct sk_buff *skb) } bool icmp_global_allow(void); +void icmp_global_consume(void); + extern int sysctl_icmp_msgs_per_sec; extern int sysctl_icmp_msgs_burst; diff --git a/net/ipv4/icmp.c b/net/ipv4/icmp.c index b8f56d03fcbb..0078e8fb2e86 100644 --- a/net/ipv4/icmp.c +++ b/net/ipv4/icmp.c @@ -224,57 +224,59 @@ int sysctl_icmp_msgs_per_sec __read_mostly = 1000; int sysctl_icmp_msgs_burst __read_mostly = 50; static struct { - spinlock_t lock; - u32 credit; + atomic_t credit; u32 stamp; -} icmp_global = { - .lock = __SPIN_LOCK_UNLOCKED(icmp_global.lock), -}; +} icmp_global; /** * icmp_global_allow - Are we allowed to send one more ICMP message ? * * Uses a token bucket to limit our ICMP messages to ~sysctl_icmp_msgs_per_sec. * Returns false if we reached the limit and can not send another packet. - * Note: called with BH disabled + * Works in tandem with icmp_global_consume(). */ bool icmp_global_allow(void) { - u32 credit, delta, incr = 0, now = (u32)jiffies; - bool rc = false; + u32 delta, now, oldstamp; + int incr, new, old; - /* Check if token bucket is empty and cannot be refilled - * without taking the spinlock. The READ_ONCE() are paired - * with the following WRITE_ONCE() in this same function. + /* Note: many cpus could find this condition true. + * Then later icmp_global_consume() could consume more credits, + * this is an acceptable race. */ - if (!READ_ONCE(icmp_global.credit)) { - delta = min_t(u32, now - READ_ONCE(icmp_global.stamp), HZ); - if (delta < HZ / 50) - return false; - } + if (atomic_read(&icmp_global.credit) > 0) + return true; - spin_lock(&icmp_global.lock); - delta = min_t(u32, now - icmp_global.stamp, HZ); - if (delta >= HZ / 50) { - incr = READ_ONCE(sysctl_icmp_msgs_per_sec) * delta / HZ; - if (incr) - WRITE_ONCE(icmp_global.stamp, now); + now = jiffies; + oldstamp = READ_ONCE(icmp_global.stamp); + delta = min_t(u32, now - oldstamp, HZ); + if (delta < HZ / 50) + return false; + + incr = READ_ONCE(sysctl_icmp_msgs_per_sec) * delta / HZ; + if (!incr) + return false; + + if (cmpxchg(&icmp_global.stamp, oldstamp, now) == oldstamp) { + old = atomic_read(&icmp_global.credit); + do { + new = min(old + incr, READ_ONCE(sysctl_icmp_msgs_burst)); + } while (!atomic_try_cmpxchg(&icmp_global.credit, &old, new)); } - credit = min_t(u32, icmp_global.credit + incr, - READ_ONCE(sysctl_icmp_msgs_burst)); - if (credit) { - /* We want to use a credit of one in average, but need to randomize - * it for security reasons. - */ - credit = max_t(int, credit - get_random_u32_below(3), 0); - rc = true; - } - WRITE_ONCE(icmp_global.credit, credit); - spin_unlock(&icmp_global.lock); - return rc; + return true; } EXPORT_SYMBOL(icmp_global_allow); +void icmp_global_consume(void) +{ + int credits = get_random_u32_below(3); + + /* Note: this might make icmp_global.credit negative. */ + if (credits) + atomic_sub(credits, &icmp_global.credit); +} +EXPORT_SYMBOL(icmp_global_consume); + static bool icmpv4_mask_allow(struct net *net, int type, int code) { if (type > NR_ICMP_TYPES) @@ -291,14 +293,16 @@ static bool icmpv4_mask_allow(struct net *net, int type, int code) return false; } -static bool icmpv4_global_allow(struct net *net, int type, int code) +static bool icmpv4_global_allow(struct net *net, int type, int code, + bool *apply_ratelimit) { if (icmpv4_mask_allow(net, type, code)) return true; - if (icmp_global_allow()) + if (icmp_global_allow()) { + *apply_ratelimit = true; return true; - + } __ICMP_INC_STATS(net, ICMP_MIB_RATELIMITGLOBAL); return false; } @@ -308,15 +312,16 @@ static bool icmpv4_global_allow(struct net *net, int type, int code) */ static bool icmpv4_xrlim_allow(struct net *net, struct rtable *rt, - struct flowi4 *fl4, int type, int code) + struct flowi4 *fl4, int type, int code, + bool apply_ratelimit) { struct dst_entry *dst = &rt->dst; struct inet_peer *peer; bool rc = true; int vif; - if (icmpv4_mask_allow(net, type, code)) - goto out; + if (!apply_ratelimit) + return true; /* No rate limit on loopback */ if (dst->dev && (dst->dev->flags&IFF_LOOPBACK)) @@ -331,6 +336,8 @@ static bool icmpv4_xrlim_allow(struct net *net, struct rtable *rt, out: if (!rc) __ICMP_INC_STATS(net, ICMP_MIB_RATELIMITHOST); + else + icmp_global_consume(); return rc; } @@ -402,6 +409,7 @@ static void icmp_reply(struct icmp_bxm *icmp_param, struct sk_buff *skb) struct ipcm_cookie ipc; struct rtable *rt = skb_rtable(skb); struct net *net = dev_net(rt->dst.dev); + bool apply_ratelimit = false; struct flowi4 fl4; struct sock *sk; struct inet_sock *inet; @@ -413,11 +421,11 @@ static void icmp_reply(struct icmp_bxm *icmp_param, struct sk_buff *skb) if (ip_options_echo(net, &icmp_param->replyopts.opt.opt, skb)) return; - /* Needed by both icmp_global_allow and icmp_xmit_lock */ + /* Needed by both icmpv4_global_allow and icmp_xmit_lock */ local_bh_disable(); - /* global icmp_msgs_per_sec */ - if (!icmpv4_global_allow(net, type, code)) + /* is global icmp_msgs_per_sec exhausted ? */ + if (!icmpv4_global_allow(net, type, code, &apply_ratelimit)) goto out_bh_enable; sk = icmp_xmit_lock(net); @@ -450,7 +458,7 @@ static void icmp_reply(struct icmp_bxm *icmp_param, struct sk_buff *skb) rt = ip_route_output_key(net, &fl4); if (IS_ERR(rt)) goto out_unlock; - if (icmpv4_xrlim_allow(net, rt, &fl4, type, code)) + if (icmpv4_xrlim_allow(net, rt, &fl4, type, code, apply_ratelimit)) icmp_push_reply(sk, icmp_param, &fl4, &ipc, &rt); ip_rt_put(rt); out_unlock: @@ -596,6 +604,7 @@ void __icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info, int room; struct icmp_bxm icmp_param; struct rtable *rt = skb_rtable(skb_in); + bool apply_ratelimit = false; struct ipcm_cookie ipc; struct flowi4 fl4; __be32 saddr; @@ -677,7 +686,7 @@ void __icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info, } } - /* Needed by both icmp_global_allow and icmp_xmit_lock */ + /* Needed by both icmpv4_global_allow and icmp_xmit_lock */ local_bh_disable(); /* Check global sysctl_icmp_msgs_per_sec ratelimit, unless @@ -685,7 +694,7 @@ void __icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info, * loopback, then peer ratelimit still work (in icmpv4_xrlim_allow) */ if (!(skb_in->dev && (skb_in->dev->flags&IFF_LOOPBACK)) && - !icmpv4_global_allow(net, type, code)) + !icmpv4_global_allow(net, type, code, &apply_ratelimit)) goto out_bh_enable; sk = icmp_xmit_lock(net); @@ -744,7 +753,7 @@ void __icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info, goto out_unlock; /* peer icmp_ratelimit */ - if (!icmpv4_xrlim_allow(net, rt, &fl4, type, code)) + if (!icmpv4_xrlim_allow(net, rt, &fl4, type, code, apply_ratelimit)) goto ende; /* RFC says return as much as we can without exceeding 576 bytes. */ diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c index 7b31674644ef..46f70e4a8351 100644 --- a/net/ipv6/icmp.c +++ b/net/ipv6/icmp.c @@ -175,14 +175,16 @@ static bool icmpv6_mask_allow(struct net *net, int type) return false; } -static bool icmpv6_global_allow(struct net *net, int type) +static bool icmpv6_global_allow(struct net *net, int type, + bool *apply_ratelimit) { if (icmpv6_mask_allow(net, type)) return true; - if (icmp_global_allow()) + if (icmp_global_allow()) { + *apply_ratelimit = true; return true; - + } __ICMP_INC_STATS(net, ICMP_MIB_RATELIMITGLOBAL); return false; } @@ -191,13 +193,13 @@ static bool icmpv6_global_allow(struct net *net, int type) * Check the ICMP output rate limit */ static bool icmpv6_xrlim_allow(struct sock *sk, u8 type, - struct flowi6 *fl6) + struct flowi6 *fl6, bool apply_ratelimit) { struct net *net = sock_net(sk); struct dst_entry *dst; bool res = false; - if (icmpv6_mask_allow(net, type)) + if (!apply_ratelimit) return true; /* @@ -228,6 +230,8 @@ static bool icmpv6_xrlim_allow(struct sock *sk, u8 type, if (!res) __ICMP6_INC_STATS(net, ip6_dst_idev(dst), ICMP6_MIB_RATELIMITHOST); + else + icmp_global_consume(); dst_release(dst); return res; } @@ -452,6 +456,7 @@ void icmp6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info, struct net *net; struct ipv6_pinfo *np; const struct in6_addr *saddr = NULL; + bool apply_ratelimit = false; struct dst_entry *dst; struct icmp6hdr tmp_hdr; struct flowi6 fl6; @@ -533,11 +538,12 @@ void icmp6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info, return; } - /* Needed by both icmp_global_allow and icmpv6_xmit_lock */ + /* Needed by both icmpv6_global_allow and icmpv6_xmit_lock */ local_bh_disable(); /* Check global sysctl_icmp_msgs_per_sec ratelimit */ - if (!(skb->dev->flags & IFF_LOOPBACK) && !icmpv6_global_allow(net, type)) + if (!(skb->dev->flags & IFF_LOOPBACK) && + !icmpv6_global_allow(net, type, &apply_ratelimit)) goto out_bh_enable; mip6_addr_swap(skb, parm); @@ -575,7 +581,7 @@ void icmp6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info, np = inet6_sk(sk); - if (!icmpv6_xrlim_allow(sk, type, &fl6)) + if (!icmpv6_xrlim_allow(sk, type, &fl6, apply_ratelimit)) goto out; tmp_hdr.icmp6_type = type; @@ -717,6 +723,7 @@ static enum skb_drop_reason icmpv6_echo_reply(struct sk_buff *skb) struct ipv6_pinfo *np; const struct in6_addr *saddr = NULL; struct icmp6hdr *icmph = icmp6_hdr(skb); + bool apply_ratelimit = false; struct icmp6hdr tmp_hdr; struct flowi6 fl6; struct icmpv6_msg msg; @@ -781,8 +788,9 @@ static enum skb_drop_reason icmpv6_echo_reply(struct sk_buff *skb) goto out; /* Check the ratelimit */ - if ((!(skb->dev->flags & IFF_LOOPBACK) && !icmpv6_global_allow(net, ICMPV6_ECHO_REPLY)) || - !icmpv6_xrlim_allow(sk, ICMPV6_ECHO_REPLY, &fl6)) + if ((!(skb->dev->flags & IFF_LOOPBACK) && + !icmpv6_global_allow(net, ICMPV6_ECHO_REPLY, &apply_ratelimit)) || + !icmpv6_xrlim_allow(sk, ICMPV6_ECHO_REPLY, &fl6, apply_ratelimit)) goto out_dst_release; idev = __in6_dev_get(skb->dev);

9 months

3
4
0 0

[PATCH 6.6 00/14] Backport thunderbolt fix(es) from v6.9

by Alexandru Gagniuc

From: Alexandru Gagniuc <mr.nuke.me(a)gmail.com> These patches resolve thunderbolt issues on Intel Raptor Lake systems. With a monitor connected to a HP Thunderbolt G4 dock, the display sometimes stops working after resume. The kernel reports an issue with the DisplayPort MST topology, the full backtrace being pasted below. This failure is since v6.9-rc1 by commit b4734507ac55 ("thunderbolt: Improve DisplayPort tunnel setup process to be more robust"). The other commits are dependencies such that all changes apply cleanly without needing modification. Sep 6 08:10:29 HP7c5758fc4d4f kernel: [ 89.414673] UBSAN: shift-out-of-bounds in drivers/gpu/drm/display/drm_dp_mst_topology.c:4416:36 Sep 6 08:10:29 HP7c5758fc4d4f kernel: [ 89.414674] shift exponent -1 is negative Sep 6 08:10:29 HP7c5758fc4d4f kernel: [ 89.414675] CPU: 0 PID: 145 Comm: kworker/0:2 Tainted: G U 6.6.16 #108 Sep 6 08:10:29 HP7c5758fc4d4f kernel: [ 89.414677] Hardware name: HP HP Elite t660 Thin Client/8D05, BIOS W44 Ver. 00.14.00 07/19/2024 Sep 6 08:10:29 HP7c5758fc4d4f kernel: [ 89.414678] Workqueue: events output_poll_execute [drm_kms_helper] Sep 6 08:10:29 HP7c5758fc4d4f kernel: [ 89.414695] Call Trace: Sep 6 08:10:29 HP7c5758fc4d4f kernel: [ 89.414697] <TASK> Sep 6 08:10:29 HP7c5758fc4d4f kernel: [ 89.414698] dump_stack_lvl+0x48/0x70 Sep 6 08:10:29 HP7c5758fc4d4f kernel: [ 89.414703] dump_stack+0x10/0x20 Sep 6 08:10:29 HP7c5758fc4d4f kernel: [ 89.414705] __ubsan_handle_shift_out_of_bounds+0x156/0x310 Sep 6 08:10:29 HP7c5758fc4d4f kernel: [ 89.414708] ? krealloc+0x98/0x100 Sep 6 08:10:29 HP7c5758fc4d4f kernel: [ 89.414711] ? drm_atomic_get_private_obj_state+0x167/0x1a0 [drm] Sep 6 08:10:29 HP7c5758fc4d4f kernel: [ 89.414733] drm_dp_atomic_release_time_slots.cold+0x17/0x3d [drm_display_helper] Sep 6 08:10:29 HP7c5758fc4d4f kernel: [ 89.414743] intel_dp_mst_atomic_check+0x9a/0x170 [i915] Sep 6 08:10:29 HP7c5758fc4d4f kernel: [ 89.414831] drm_atomic_helper_check_modeset+0x4bb/0xe20 [drm_kms_helper] Sep 6 08:10:29 HP7c5758fc4d4f kernel: [ 89.414842] ? __kmem_cache_alloc_node+0x1b3/0x320 Sep 6 08:10:29 HP7c5758fc4d4f kernel: [ 89.414845] ? __ww_mutex_lock.constprop.0+0x39/0xa00 Sep 6 08:10:29 HP7c5758fc4d4f kernel: [ 89.414848] intel_atomic_check+0x113/0x2b50 [i915] Sep 6 08:10:29 HP7c5758fc4d4f kernel: [ 89.414936] drm_atomic_check_only+0x692/0xb80 [drm] Sep 6 08:10:29 HP7c5758fc4d4f kernel: [ 89.414956] drm_atomic_commit+0x57/0xd0 [drm] Sep 6 08:10:29 HP7c5758fc4d4f kernel: [ 89.414972] ? _pfx__drm_printfn_info+0x10/0x10 [drm] Sep 6 08:10:29 HP7c5758fc4d4f kernel: [ 89.414999] drm_client_modeset_commit_atomic+0x1f1/0x230 [drm] Sep 6 08:10:29 HP7c5758fc4d4f kernel: [ 89.415019] drm_client_modeset_commit_locked+0x5b/0x170 [drm] Sep 6 08:10:29 HP7c5758fc4d4f kernel: [ 89.415038] ? mutex_lock+0x13/0x50 Sep 6 08:10:29 HP7c5758fc4d4f kernel: [ 89.415040] drm_client_modeset_commit+0x27/0x50 [drm] Sep 6 08:10:29 HP7c5758fc4d4f kernel: [ 89.415058] __drm_fb_helper_restore_fbdev_mode_unlocked+0xd2/0x100 [drm_kms_helper] Sep 6 08:10:29 HP7c5758fc4d4f kernel: [ 89.415068] drm_fb_helper_hotplug_event+0x11a/0x140 [drm_kms_helper] Sep 6 08:10:29 HP7c5758fc4d4f kernel: [ 89.415077] intel_fbdev_output_poll_changed+0x6f/0xb0 [i915] Sep 6 08:10:29 HP7c5758fc4d4f kernel: [ 89.415156] output_poll_execute+0x23e/0x290 [drm_kms_helper] Sep 6 08:10:29 HP7c5758fc4d4f kernel: [ 89.415166] ? intelfb_dirty+0x41/0x80 [i915] Sep 6 08:10:29 HP7c5758fc4d4f kernel: [ 89.415236] process_one_work+0x178/0x360 Sep 6 08:10:29 HP7c5758fc4d4f kernel: [ 89.415238] ? __pfx_worker_thread+0x10/0x10 Sep 6 08:10:29 HP7c5758fc4d4f kernel: [ 89.415240] worker_thread+0x307/0x430 Sep 6 08:10:29 HP7c5758fc4d4f kernel: [ 89.415241] ? __pfx_worker_thread+0x10/0x10 Sep 6 08:10:29 HP7c5758fc4d4f kernel: [ 89.415242] kthread+0xf4/0x130 Sep 6 08:10:29 HP7c5758fc4d4f kernel: [ 89.415245] ? __pfx_kthread+0x10/0x10 Sep 6 08:10:29 HP7c5758fc4d4f kernel: [ 89.415247] ret_from_fork+0x43/0x70 Sep 6 08:10:29 HP7c5758fc4d4f kernel: [ 89.415249] ? __pfx_kthread+0x10/0x10 Sep 6 08:10:29 HP7c5758fc4d4f kernel: [ 89.415250] ret_from_fork_asm+0x1b/0x30 Sep 6 08:10:29 HP7c5758fc4d4f kernel: [ 89.415252] </TASK> Gil Fine (8): thunderbolt: Fix debug log when DisplayPort adapter not available for pairing thunderbolt: Create multiple DisplayPort tunnels if there are more DP IN/OUT pairs thunderbolt: Make is_gen4_link() available to the rest of the driver thunderbolt: Change bandwidth reservations to comply USB4 v2 thunderbolt: Introduce tb_port_path_direction_downstream() thunderbolt: Add support for asymmetric link thunderbolt: Configure asymmetric link if needed and bandwidth allows thunderbolt: Improve DisplayPort tunnel setup process to be more robust Mika Westerberg (6): thunderbolt: Use tb_tunnel_dbg() where possible to make logging more consistent thunderbolt: Expose tb_tunnel_xxx() log macros to the rest of the driver thunderbolt: Use constants for path weight and priority thunderbolt: Use weight constants in tb_usb3_consumed_bandwidth() thunderbolt: Introduce tb_for_each_upstream_port_on_path() thunderbolt: Introduce tb_switch_depth() drivers/thunderbolt/switch.c | 328 +++++++++++--- drivers/thunderbolt/tb.c | 784 +++++++++++++++++++++++++++------- drivers/thunderbolt/tb.h | 56 ++- drivers/thunderbolt/tb_regs.h | 9 +- drivers/thunderbolt/tunnel.c | 217 ++++++---- drivers/thunderbolt/tunnel.h | 26 +- drivers/thunderbolt/usb4.c | 106 +++++ 7 files changed, 1225 insertions(+), 301 deletions(-) -- 2.45.1

9 months

2
15
0 0

[PATCH wireless] wifi: mac80211: do not pass a stopped vif to the driver in .get_txpower

by Felix Fietkau

Avoid potentially crashing in the driver because of uninitialized private data Fixes: 5b3dc42b1b0d ("mac80211: add support for driver tx power reporting") Cc: stable(a)vger.kernel.org Signed-off-by: Felix Fietkau <nbd(a)nbd.name> --- net/mac80211/cfg.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 847304a3a29a..5f855e94aeb4 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -3138,7 +3138,8 @@ static int ieee80211_get_tx_power(struct wiphy *wiphy, struct ieee80211_local *local = wiphy_priv(wiphy); struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); - if (local->ops->get_txpower) + if (local->ops->get_txpower && + (sdata->flags & IEEE80211_SDATA_IN_DRIVER)) return drv_get_txpower(local, sdata, dbm); if (local->emulate_chanctx) -- 2.46.0

9 months

1
0
0 0

patches sent up to 6.13-rc1 that shouldn't be backported

by Jason A. Donenfeld

Hi Sasha, I've been getting emails from your bots... I sent two pulls to Linus for 6.13-rc1: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… In these, I'm not sure there's actually much valid stable material. I didn't mark anything as Cc: stable(a)vger.kernel.org, I don't think. As such, can you make sure none of those get backported? Alternatively, if you do have reason to want to pick some of these, can you be clear with what and why, and actually carefully decide which ones and which dependencies are required as such in a non-automated way? Thanks, Jason

9 months

2
5
0 0

[PATCH] ASoC: qcom: Fix NULL Dereference in asoc_qcom_lpass_cpu_platform_probe()

by Gax-c

A devm_kzalloc() in asoc_qcom_lpass_cpu_platform_probe() could possibly return NULL pointer. NULL Pointer Dereference may be triggerred without addtional check. Add a NULL check for the returned pointer. Fixes: b5022a36d28f ("ASoC: qcom: lpass: Use regmap_field for i2sctl and dmactl registers") Signed-off-by: Zichen Xie <zichenxie0106(a)gmail.com> Cc: stable(a)vger.kernel.org Reported-by: Zichen Xie <zichenxie0106(a)gmail.com> --- sound/soc/qcom/lpass-cpu.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/sound/soc/qcom/lpass-cpu.c b/sound/soc/qcom/lpass-cpu.c index 5a47f661e0c6..242bc16da36d 100644 --- a/sound/soc/qcom/lpass-cpu.c +++ b/sound/soc/qcom/lpass-cpu.c @@ -1242,6 +1242,8 @@ int asoc_qcom_lpass_cpu_platform_probe(struct platform_device *pdev) /* Allocation for i2sctl regmap fields */ drvdata->i2sctl = devm_kzalloc(&pdev->dev, sizeof(struct lpaif_i2sctl), GFP_KERNEL); + if (!drvdata->i2sctl) + return -ENOMEM; /* Initialize bitfields for dai I2SCTL register */ ret = lpass_cpu_init_i2sctl_bitfields(dev, drvdata->i2sctl, -- 2.25.1

9 months

2
1
0 0

[for-next][PATCH 1/5] tracing: Fix function timing profiler to initialize hashtable

by Steven Rostedt

From: "Masami Hiramatsu (Google)" <mhiramat(a)kernel.org> Since the new fgraph requires to initialize fgraph_ops.ops.func_hash before calling register_ftrace_graph(), initialize it with default (tracing all functions) parameter. Cc: stable(a)vger.kernel.org Fixes: 5fccc7552ccb ("ftrace: Add subops logic to allow one ops to manage many") Signed-off-by: Masami Hiramatsu (Google) <mhiramat(a)kernel.org> Signed-off-by: Steven Rostedt (Google) <rostedt(a)goodmis.org> --- kernel/trace/ftrace.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index 4c28dd177ca6..d2dd71d04b8a 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -883,6 +883,10 @@ static void profile_graph_return(struct ftrace_graph_ret *trace, } static struct fgraph_ops fprofiler_ops = { + .ops = { + .flags = FTRACE_OPS_FL_INITIALIZED, + INIT_OPS_HASH(fprofiler_ops.ops) + }, .entryfunc = &profile_graph_entry, .retfunc = &profile_graph_return, }; -- 2.45.2

9 months

1
0
0 0

[PATCH] ASoC: qcom: Fix NULL Dereference in asoc_qcom_lpass_cpu_platform_probe()

by Gax-c

A devm_kzalloc() in asoc_qcom_lpass_cpu_platform_probe() could possibly return NULL pointer. NULL Pointer Dereference may be triggerred without addtional check. Add a NULL check for the returned pointer. Fixes: b5022a36d28f ("ASoC: qcom: lpass: Use regmap_field for i2sctl and dmactl registers") Signed-off-by: Zichen Xie <zichenxie0106(a)gmail.com> Reported-by: Zichen Xie <zichenxie0106(a)gmail.com> Reported-by: Zijie Zhao <zzjas98(a)gmail.com> Reported-by: Chenyuan Yang <chenyuan0y(a)gmail.com> --- sound/soc/qcom/lpass-cpu.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/sound/soc/qcom/lpass-cpu.c b/sound/soc/qcom/lpass-cpu.c index 5a47f661e0c6..a8e56f47f237 100644 --- a/sound/soc/qcom/lpass-cpu.c +++ b/sound/soc/qcom/lpass-cpu.c @@ -1243,6 +1243,9 @@ int asoc_qcom_lpass_cpu_platform_probe(struct platform_device *pdev) drvdata->i2sctl = devm_kzalloc(&pdev->dev, sizeof(struct lpaif_i2sctl), GFP_KERNEL); + if (!drvdata->i2sctl) + return -ENOMEM; + /* Initialize bitfields for dai I2SCTL register */ ret = lpass_cpu_init_i2sctl_bitfields(dev, drvdata->i2sctl, drvdata->lpaif_map); -- 2.25.1

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