INFO: rcu detected stall in sendmsg (4)

ID	Workflow	Result	Correct	Bug	Created	Started	Finished	Revision	Error
b91cd1aa-59ba-4002-b46e-8acb9edc0ecb	assessment-security	DenialOfService: ✅ Exploitable: ❌ FilesystemTrigger: ❌ NetworkTrigger: ✅ PeripheralTrigger: ❌ RemoteTrigger: ❌ Unprivileged: ❌ UserNamespace: ✅ VMGuestTrigger: ❌ VMHostTrigger: ❌	❓	INFO: rcu detected stall in sendmsg (4)	2026/05/23 18:16	2026/05/23 18:16	2026/05/23 18:56	c69befb30ac10e158cc9d1557b508ee3f0eca1de

assessment-security

DenialOfService: ✅ Exploitable: ❌ FilesystemTrigger: ❌ NetworkTrigger: ✅ PeripheralTrigger: ❌ RemoteTrigger: ❌ Unprivileged: ❌ UserNamespace: ✅ VMGuestTrigger: ❌ VMHostTrigger: ❌

❓

2026/05/23 18:16

2026/05/23 18:56

c69befb30ac10e158cc9d1557b508ee3f0eca1de

Title	Replies (including bot)	Last reply
[syzbot] Monthly input report (Oct 2024)	0 (1)	2024/10/03 09:03
[syzbot] Monthly input report (Sep 2024)	0 (1)	2024/09/02 08:17
[syzbot] Monthly input report (Jul 2024)	0 (1)	2024/07/01 10:27
[syzbot] [net?] [input?] [usb?] INFO: rcu detected stall in sendmsg (4)	0 (1)	2024/05/24 06:18

Title

Replies (including bot)

Last reply

[syzbot] Monthly input report (Oct 2024)

0 (1)

2024/10/03 09:03

[syzbot] Monthly input report (Sep 2024)

0 (1)

2024/09/02 08:17

[syzbot] Monthly input report (Jul 2024)

0 (1)

2024/07/01 10:27

[syzbot] [net?] [input?] [usb?] INFO: rcu detected stall in sendmsg (4)

0 (1)

2024/05/24 06:18

Kernel	Title	Rank 🛈	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
linux-6.1	INFO: rcu detected stall in sendmsg (5)	1	C			40	2d07h	393d	0/3	upstream: reported C repro on 2025/06/23 07:43
linux-6.1	INFO: rcu detected stall in sendmsg (3)	1				4	657d	725d	0/3	auto-obsoleted due to no activity on 2025/01/09 18:13
upstream	INFO: rcu detected stall in sendmsg net	1				1	1749d	1749d	0/29	auto-closed as invalid on 2022/01/03 17:11
linux-6.6	INFO: rcu detected stall in sendmsg	1				13	20d	354d	0/2	upstream: reported on 2025/07/31 17:16
linux-6.1	INFO: rcu detected stall in sendmsg (4)	1				2	497d	508d	0/3	auto-obsoleted due to no activity on 2025/06/19 03:57
linux-6.1	INFO: rcu detected stall in sendmsg (2)	1				1	847d	847d	0/3	auto-obsoleted due to no activity on 2024/07/04 03:49
upstream	INFO: rcu detected stall in sendmsg (2) batman	1				1	1620d	1620d	0/29	auto-closed as invalid on 2022/05/13 12:25
upstream	INFO: rcu detected stall in sendmsg (3) net	1				4	896d	981d	0/29	auto-obsoleted due to no activity on 2024/05/05 18:15
linux-5.15	INFO: rcu detected stall in sys_sendmsg origin:upstream	1	C		error	65	10d	853d	0/3	upstream: reported C repro on 2024/03/19 21:37
linux-6.1	INFO: rcu detected stall in sendmsg	1				1	1081d	1081d	0/3	auto-obsoleted due to no activity on 2023/11/12 19:28
upstream	INFO: rcu detected stall in __sys_sendmsg net	1	C	done	inconclusive	2	1814d	2206d	0/29	auto-obsoleted due to no activity on 2024/07/07 08:59

Created	Duration	User	Repo	Result
2026/04/20 00:48	1h20m	retest repro	linux-next	OK log
2026/04/20 00:20	1h02m	retest repro	linux-next	OK log
2026/02/08 22:43	22m	retest repro	linux-next	report log
2025/11/12 16:22	24m	retest repro	linux-next	report log
2025/09/02 20:50	16m	retest repro	linux-next	error
2025/06/24 14:33	21m	retest repro	linux-next	report log
2025/04/15 12:46	32m	retest repro	linux-next	error
2025/02/04 07:30	23m	retest repro	linux-next	report log
2025/02/04 03:24	13m	retest repro	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	OK log
2024/06/03 07:25	23m	retest repro	upstream	OK log

Created

Duration

User

Patch

Repo

Result

2026/04/20 00:48

1h20m

retest repro

linux-next

OK log

2026/04/20 00:20

1h02m

retest repro

linux-next

OK log

2026/02/08 22:43

22m

retest repro

linux-next

report log

2025/11/12 16:22

24m

retest repro

linux-next

report log

2025/09/02 20:50

16m

retest repro

linux-next

error

2025/06/24 14:33

21m

retest repro

linux-next

report log

2025/04/15 12:46

32m

retest repro

linux-next

error

2025/02/04 07:30

23m

retest repro

linux-next

report log

2025/02/04 03:24

13m

retest repro

https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing

OK log

2024/06/03 07:25

23m

retest repro

upstream

OK log

Created	Duration	User	Repo	Result
2026/02/24 15:25	24m	bisect fix	upstream	error job log
2026/01/18 00:50	4h55m	bisect fix	upstream	OK (0) job log log
2025/11/30 20:20	2h21m	bisect fix	upstream	OK (0) job log log
2025/10/21 06:40	3h18m	bisect fix	upstream	OK (0) job log log
2025/07/12 11:19	2h35m	bisect fix	upstream	OK (0) job log log
2025/05/27 12:43	3h42m	bisect fix	upstream	OK (0) job log log

Created

Duration

User

Patch

Repo

Result

2026/02/24 15:25

24m

bisect fix

upstream

error job log

2026/01/18 00:50

4h55m

bisect fix

upstream

OK (0) job log log

2025/11/30 20:20

2h21m

bisect fix

upstream

OK (0) job log log

2025/10/21 06:40

3h18m

bisect fix

upstream

OK (0) job log log

2025/07/12 11:19

2h35m

bisect fix

upstream

OK (0) job log log

2025/05/27 12:43

3h42m

bisect fix

upstream

OK (0) job log log

rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 1-...!: (2 GPs behind) idle=e07c/1/0x4000000000000000 softirq=45719/45720 fqs=4 rcu: (detected by 0, t=10502 jiffies, g=44221, q=835 ncpus=2) Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 9791 Comm: syz.2.1006 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/10/2026 RIP: 0010:lock_release kernel/locking/lockdep.c:5892 [inline] RIP: 0010:lock_release+0x188/0x310 kernel/locking/lockdep.c:5875 Code: 84 83 01 00 00 90 48 c7 c7 15 cd 17 8e e8 d0 63 d3 09 b8 ff ff ff ff 65 0f c1 05 23 1f 7e 12 83 f8 01 0f 85 27 01 00 00 9c 58 <f6> c4 02 0f 85 12 01 00 00 41 f7 c6 00 02 00 00 0f 85 c8 00 00 00 RSP: 0018:ffffc90000a08d90 EFLAGS: 00000046 RAX: 0000000000000046 RBX: ffff888036c742c0 RCX: ffffc90000a08d9c RDX: 0000000000000002 RSI: ffffffff8e17cd15 RDI: ffffffff8c400c80 RBP: ffffffff89c6d5e2 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff88807e9dca80 R13: 18bfd4fbcd220c52 R14: 0000000000000002 R15: 0000000000000003 FS: 00007f2f998dd6c0(0000) GS:ffff888123eec000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c32fd9a CR3: 00000000526b1000 CR4: 00000000003526f0 Call Trace: <IRQ> __raw_spin_unlock include/linux/spinlock_api_smp.h:167 [inline] _raw_spin_unlock+0x16/0x50 kernel/locking/spinlock.c:190 spin_unlock include/linux/spinlock.h:390 [inline] advance_sched+0x6a2/0xd20 net/sched/sch_taprio.c:988 __run_hrtimer kernel/time/hrtimer.c:2032 [inline] __hrtimer_run_queues+0x462/0x9c0 kernel/time/hrtimer.c:2096 hrtimer_interrupt+0x3e5/0x940 kernel/time/hrtimer.c:2215 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1051 [inline] __sysvec_apic_timer_interrupt+0x109/0x470 arch/x86/kernel/apic/apic.c:1068 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline] sysvec_apic_timer_interrupt+0x9e/0xc0 arch/x86/kernel/apic/apic.c:1062 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674 RIP: 0010:console_flush_one_record+0xac3/0xe50 kernel/printk/printk.c:3270 Code: 00 e8 11 26 2a 00 9c 5d 81 e5 00 02 00 00 31 ff 48 89 ee e8 1f d2 21 00 48 85 ed 0f 85 d7 01 00 00 e8 71 d7 21 00 fb 4c 89 e8 <48> c1 e8 03 42 80 3c 38 00 0f 85 64 03 00 00 48 8b 0c 24 48 8b 6b RSP: 0018:ffffc90007be7558 EFLAGS: 00000287 RAX: ffffffff8f9a9cd8 RBX: ffffffff8f9a9c80 RCX: ffffc90006219000 RDX: 0000000000080000 RSI: ffffffff81e7f8cf RDI: ffff88807e9dca80 RBP: 0000000000000000 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000001982 R13: ffffffff8f9a9cd8 R14: ffffc90007be75d8 R15: dffffc0000000000 console_flush_all kernel/printk/printk.c:3343 [inline] __console_flush_and_unlock kernel/printk/printk.c:3373 [inline] console_unlock+0x103/0x260 kernel/printk/printk.c:3413 vprintk_emit+0x407/0x6b0 kernel/printk/printk.c:2479 _printk+0xcf/0x110 kernel/printk/printk.c:2504 selinux_netlink_send.cold+0x10a/0x132 security/selinux/hooks.c:6275 security_netlink_send+0x91/0x210 security/security.c:4122 netlink_sendmsg+0x836/0xda0 net/netlink/af_netlink.c:1890 sock_sendmsg_nosec net/socket.c:775 [inline] __sock_sendmsg net/socket.c:790 [inline] ____sys_sendmsg+0xa4d/0xbe0 net/socket.c:2684 ___sys_sendmsg+0x190/0x1e0 net/socket.c:2738 __sys_sendmsg+0x160/0x210 net/socket.c:2770 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f2f9899de59 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f2f998dd028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f2f98c25fa0 RCX: 00007f2f9899de59 RDX: 0000000020000010 RSI: 0000200000000340 RDI: 0000000000000003 RBP: 00007f2f98a33e6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f2f98c26038 R14: 00007f2f98c25fa0 R15: 00007ffdeead4e48 </TASK> rcu: rcu_preempt kthread starved for 10494 jiffies! g44221 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. rcu: RCU grace-period kthread stack dump: task:rcu_preempt state:R running task stack:27592 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000 Call Trace: <TASK> context_switch kernel/sched/core.c:5510 [inline] __schedule+0x125c/0x6730 kernel/sched/core.c:7234 __schedule_loop kernel/sched/core.c:7311 [inline] schedule+0xdd/0x2c0 kernel/sched/core.c:7326 schedule_timeout+0x127/0x280 kernel/time/sleep_timeout.c:99 rcu_gp_fqs_loop+0x1a9/0x900 kernel/rcu/tree.c:2123 rcu_gp_kthread+0x179/0x230 kernel/rcu/tree.c:2325 kthread+0x370/0x450 kernel/kthread.c:436 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 </TASK> rcu: Stack dump where RCU GP kthread last ran: CPU: 0 UID: 0 PID: 12 Comm: kworker/u8:0 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/10/2026 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:csd_lock_wait kernel/smp.c:342 [inline] RIP: 0010:smp_call_function_many_cond+0x589/0x16c0 kernel/smp.c:892 Code: b8 00 00 00 00 00 fc ff df 48 8b 54 24 08 49 89 d5 49 89 d4 49 c1 ed 03 41 83 e4 07 49 01 c5 41 83 c4 03 e8 a9 95 0c 00 f3 90 <41> 0f b6 45 00 41 38 c4 7c 08 84 c0 0f 85 2c 0f 00 00 8b 45 08 31 RSP: 0018:ffffc90000117878 EFLAGS: 00000293 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff81fd3abd RDX: ffff88801e6aca80 RSI: ffffffff81fd3a97 RDI: ffff88801e6aca80 RBP: ffff8880b8541240 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000003 R13: ffffed10170a8249 R14: 0000000000000001 R15: ffff8880b843c880 FS: 0000000000000000(0000) GS:ffff888123dec000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffcfeb3afc0 CR3: 000000000e992000 CR4: 00000000003526f0 Call Trace: <TASK> on_each_cpu_cond_mask+0x40/0x90 kernel/smp.c:1057 on_each_cpu include/linux/smp.h:72 [inline] smp_text_poke_sync_each_cpu arch/x86/kernel/alternative.c:2773 [inline] smp_text_poke_batch_finish+0x337/0xc60 arch/x86/kernel/alternative.c:2983 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146 jump_label_update+0x37a/0x550 kernel/jump_label.c:910 static_key_enable_cpuslocked+0x1bc/0x270 kernel/jump_label.c:210 static_key_enable+0x1a/0x20 kernel/jump_label.c:223 toggle_allocation_gate mm/kfence/core.c:911 [inline] toggle_allocation_gate+0xfe/0x2d0 mm/kfence/core.c:903 process_one_work+0xa23/0x1940 kernel/workqueue.c:3322 process_scheduled_works kernel/workqueue.c:3405 [inline] worker_thread+0x5ef/0xe50 kernel/workqueue.c:3486 kthread+0x370/0x450 kernel/kthread.c:436 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 </TASK> GRED: Unable to relocate VQ 0x0 after dequeue, screwing up backlog watchdog: BUG: soft lockup - CPU#0 stuck for 246s! [kworker/u8:0:12] Modules linked in: irq event stamp: 2608646 hardirqs last enabled at (2608645): [<ffffffff8bb8b73d>] irqentry_exit_to_kernel_mode_after_preempt include/linux/irq-entry-common.h:507 [inline] hardirqs last enabled at (2608645): [<ffffffff8bb8b73d>] irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:542 [inline] hardirqs last enabled at (2608645): [<ffffffff8bb8b73d>] irqentry_exit+0x24d/0xa00 kernel/entry/common.c:167 hardirqs last disabled at (2608646): [<ffffffff8bb8a31e>] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1062 softirqs last enabled at (2608644): [<ffffffff81c86222>] __do_softirq kernel/softirq.c:656 [inline] softirqs last enabled at (2608644): [<ffffffff81c86222>] invoke_softirq kernel/softirq.c:496 [inline] softirqs last enabled at (2608644): [<ffffffff81c86222>] __irq_exit_rcu+0x162/0x210 kernel/softirq.c:735 softirqs last disabled at (2608613): [<ffffffff81c86222>] __do_softirq kernel/softirq.c:656 [inline] softirqs last disabled at (2608613): [<ffffffff81c86222>] invoke_softirq kernel/softirq.c:496 [inline] softirqs last disabled at (2608613): [<ffffffff81c86222>] __irq_exit_rcu+0x162/0x210 kernel/softirq.c:735 CPU: 0 UID: 0 PID: 12 Comm: kworker/u8:0 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/10/2026 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:csd_lock_wait kernel/smp.c:342 [inline] RIP: 0010:smp_call_function_many_cond+0x58e/0x16c0 kernel/smp.c:892 Code: 00 fc ff df 48 8b 54 24 08 49 89 d5 49 89 d4 49 c1 ed 03 41 83 e4 07 49 01 c5 41 83 c4 03 e8 a9 95 0c 00 f3 90 41 0f b6 45 00 <41> 38 c4 7c 08 84 c0 0f 85 2c 0f 00 00 8b 45 08 31 ff 83 e0 01 41 RSP: 0018:ffffc90000117878 EFLAGS: 00000293 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff81fd3abd RDX: ffff88801e6aca80 RSI: ffffffff81fd3a97 RDI: ffff88801e6aca80 RBP: ffff8880b8541240 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000003 R13: ffffed10170a8249 R14: 0000000000000001 R15: ffff8880b843c880 FS: 0000000000000000(0000) GS:ffff888123dec000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffcfeb3afc0 CR3: 000000000e992000 CR4: 00000000003526f0 Call Trace: <TASK> on_each_cpu_cond_mask+0x40/0x90 kernel/smp.c:1057 on_each_cpu include/linux/smp.h:72 [inline] smp_text_poke_sync_each_cpu arch/x86/kernel/alternative.c:2773 [inline] smp_text_poke_batch_finish+0x337/0xc60 arch/x86/kernel/alternative.c:2983 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146 jump_label_update+0x37a/0x550 kernel/jump_label.c:910 static_key_enable_cpuslocked+0x1bc/0x270 kernel/jump_label.c:210 static_key_enable+0x1a/0x20 kernel/jump_label.c:223 toggle_allocation_gate mm/kfence/core.c:911 [inline] toggle_allocation_gate+0xfe/0x2d0 mm/kfence/core.c:903 process_one_work+0xa23/0x1940 kernel/workqueue.c:3322 process_scheduled_works kernel/workqueue.c:3405 [inline] worker_thread+0x5ef/0xe50 kernel/workqueue.c:3486 kthread+0x370/0x450 kernel/kthread.c:436 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 </TASK> Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 9791 Comm: syz.2.1006 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/10/2026 RIP: 0010:hrtimer_set_expires include/linux/hrtimer.h:82 [inline] RIP: 0010:advance_sched+0x6cd/0xd20 net/sched/sch_taprio.c:990 Code: 8d 7b 28 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 b6 05 00 00 48 8b 04 24 48 8d 78 40 4c 89 68 28 <48> b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f RSP: 0018:ffffc90000a08de8 EFLAGS: 00000046 RAX: ffff888036c74300 RBX: ffff888036c74300 RCX: 0000000000000000 RDX: 1ffff11006d8e865 RSI: 0000000000000004 RDI: ffff888036c74340 RBP: ffff88801dbad800 R08: 0000000000000000 R09: ffffed1006d8e855 R10: ffff888036c742ab R11: 0000000000000000 R12: 0000000000000000 R13: 18bfd77dcaa07d47 R14: ffff88807abc6c00 R15: ffff88807abc6c00 FS: 00007f2f998dd6c0(0000) GS:ffff888123eec000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c32fd9a CR3: 00000000526b1000 CR4: 00000000003526f0 Call Trace: <IRQ> __run_hrtimer kernel/time/hrtimer.c:2032 [inline] __hrtimer_run_queues+0x462/0x9c0 kernel/time/hrtimer.c:2096 hrtimer_interrupt+0x3e5/0x940 kernel/time/hrtimer.c:2215 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1051 [inline] __sysvec_apic_timer_interrupt+0x109/0x470 arch/x86/kernel/apic/apic.c:1068 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline] sysvec_apic_timer_interrupt+0x9e/0xc0 arch/x86/kernel/apic/apic.c:1062 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674 RIP: 0010:console_flush_one_record+0xac3/0xe50 kernel/printk/printk.c:3270 Code: 00 e8 11 26 2a 00 9c 5d 81 e5 00 02 00 00 31 ff 48 89 ee e8 1f d2 21 00 48 85 ed 0f 85 d7 01 00 00 e8 71 d7 21 00 fb 4c 89 e8 <48> c1 e8 03 42 80 3c 38 00 0f 85 64 03 00 00 48 8b 0c 24 48 8b 6b RSP: 0018:ffffc90007be7558 EFLAGS: 00000287 RAX: ffffffff8f9a9cd8 RBX: ffffffff8f9a9c80 RCX: ffffc90006219000 RDX: 0000000000080000 RSI: ffffffff81e7f8cf RDI: ffff88807e9dca80 RBP: 0000000000000000 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000001982 R13: ffffffff8f9a9cd8 R14: ffffc90007be75d8 R15: dffffc0000000000 console_flush_all kernel/printk/printk.c:3343 [inline] __console_flush_and_unlock kernel/printk/printk.c:3373 [inline] console_unlock+0x103/0x260 kernel/printk/printk.c:3413 vprintk_emit+0x407/0x6b0 kernel/printk/printk.c:2479 _printk+0xcf/0x110 kernel/printk/printk.c:2504 selinux_netlink_send.cold+0x10a/0x132 security/selinux/hooks.c:6275 security_netlink_send+0x91/0x210 security/security.c:4122 netlink_sendmsg+0x836/0xda0 net/netlink/af_netlink.c:1890 sock_sendmsg_nosec net/socket.c:775 [inline] __sock_sendmsg net/socket.c:790 [inline] ____sys_sendmsg+0xa4d/0xbe0 net/socket.c:2684 ___sys_sendmsg+0x190/0x1e0 net/socket.c:2738 __sys_sendmsg+0x160/0x210 net/socket.c:2770 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f2f9899de59 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f2f998dd028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f2f98c25fa0 RCX: 00007f2f9899de59 RDX: 0000000020000010 RSI: 0000200000000340 RDI: 0000000000000003 RBP: 00007f2f98a33e6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f2f98c26038 R14: 00007f2f98c25fa0 R15: 00007ffdeead4e48 </TASK>

Crashes (65):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets (help?)	Manager	Title
2026/07/06 22:21	upstream	8cdeaa50eae8	88b240e4	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-kasan-gce-selinux-root	INFO: rcu detected stall in sendmsg
2026/05/01 21:45	upstream	26fd6bff2c05	753c55b9	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-kasan-gce-selinux-root	INFO: rcu detected stall in sendmsg
2026/03/05 21:58	upstream	c107785c7e8d	d20b04c8	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-qemu-gce-upstream-auto	INFO: rcu detected stall in sendmsg
2025/12/18 21:26	upstream	ea1013c15392	d6526ea3	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-kasan-gce-selinux-root	INFO: rcu detected stall in sendmsg
2025/10/29 12:17	upstream	8eefed8f65cc	fd2207e7	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-kasan-gce-selinux-root	INFO: rcu detected stall in sendmsg
2025/08/08 23:57	upstream	37816488247d	987b750d	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-kasan-gce-selinux-root	INFO: rcu detected stall in sendmsg
2025/07/18 04:55	upstream	6832a9317eee	0d1223f1	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-kasan-gce-selinux-root	INFO: rcu detected stall in sendmsg
2025/06/06 19:57	upstream	e271ed52b344	f61267d4	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-kasan-gce-selinux-root	INFO: rcu detected stall in sendmsg
2025/04/24 06:59	upstream	a79be02bba5c	9882047a	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-qemu-gce-upstream-auto	INFO: rcu detected stall in sendmsg
2025/03/26 08:43	upstream	2df0c02dab82	89d30d73	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-kasan-gce-smack-root	INFO: rcu detected stall in sendmsg
2025/03/10 13:28	upstream	80e54e84911a	16256247	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-kasan-gce-selinux-root	INFO: rcu detected stall in sendmsg
2025/02/25 11:52	upstream	d082ecbc71e9	d34966d1	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-kasan-gce-smack-root	INFO: rcu detected stall in sendmsg
2025/02/24 20:04	upstream	d082ecbc71e9	d34966d1	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-kasan-gce-selinux-root	INFO: rcu detected stall in sendmsg
2025/02/13 19:06	upstream	4dc1d1bec898	2afad16e	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-kasan-gce-smack-root	INFO: rcu detected stall in sendmsg
2025/01/21 02:38	upstream	ffd294d346d1	6e87cfa2	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-kasan-gce-root	INFO: rcu detected stall in sendmsg
2025/01/13 13:07	upstream	5bc55a333a2f	6dbc6a9b	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-kasan-gce-root	INFO: rcu detected stall in sendmsg
2025/01/12 16:52	upstream	b62cef9a5c67	6dbc6a9b	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-kasan-gce	INFO: rcu detected stall in sendmsg
2025/01/08 02:12	upstream	09a0fa92e5b4	f3558dbf	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-kasan-gce-selinux-root	INFO: rcu detected stall in sendmsg
2025/01/05 11:24	upstream	ab75170520d4	f3558dbf	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-kasan-gce-selinux-root	INFO: rcu detected stall in sendmsg
2025/01/05 00:20	upstream	ab75170520d4	f3558dbf	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-kasan-gce-selinux-root	INFO: rcu detected stall in sendmsg
2025/01/03 23:26	upstream	0bc21e701a6f	f3558dbf	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-kasan-gce	INFO: rcu detected stall in sendmsg
2024/12/27 13:55	upstream	d6ef8b40d075	d3ccff63	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-kasan-gce-smack-root	INFO: rcu detected stall in sendmsg
2024/12/12 01:36	upstream	231825b2e1ff	ff949d25	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-kasan-gce	INFO: rcu detected stall in sendmsg
2024/12/09 20:51	upstream	fac04efc5c79	9ac0fdc6	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-kasan-gce-root	INFO: rcu detected stall in sendmsg
2024/11/25 06:38	upstream	9f16d5e6f220	68da6d95	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-kasan-gce-selinux-root	INFO: rcu detected stall in sendmsg
2024/11/25 05:36	upstream	9f16d5e6f220	68da6d95	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-kasan-gce-selinux-root	INFO: rcu detected stall in sendmsg
2024/11/21 17:27	upstream	43fb83c17ba2	4b25d554	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-kasan-gce-selinux-root	INFO: rcu detected stall in sendmsg
2024/11/03 19:41	upstream	b9021de3ec2f	f00eed24	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-kasan-gce-selinux-root	INFO: rcu detected stall in sendmsg
2024/10/24 13:51	upstream	c2ee9f594da8	15fa2979	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-kasan-gce-smack-root	INFO: rcu detected stall in sendmsg
2024/09/26 19:00	upstream	11a299a7933e	0d19f247	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-kasan-gce	INFO: rcu detected stall in sendmsg
2024/09/23 00:40	upstream	af9c191ac2a0	6f888b75	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-kasan-gce-smack-root	INFO: rcu detected stall in sendmsg
2024/09/02 04:53	upstream	c9f016e72b5c	1eda0d14	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-kasan-gce-root	INFO: rcu detected stall in sendmsg
2024/09/01 06:17	upstream	e8784b0aef62	1eda0d14	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-kasan-gce-smack-root	INFO: rcu detected stall in sendmsg
2024/08/10 02:19	upstream	ee9a43b7cfe2	a9e7e9e3	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-kasan-gce	INFO: rcu detected stall in sendmsg
2024/07/16 18:36	upstream	d67978318827	215bec2d	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-kasan-gce-root	INFO: rcu detected stall in sendmsg
2024/07/01 04:35	upstream	3ffea9a7a6f7	757f06b1	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-kasan-gce-smack-root	INFO: rcu detected stall in sendmsg
2024/06/04 16:54	upstream	f06ce441457d	a1feae05	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-kasan-gce-selinux-root	INFO: rcu detected stall in sendmsg
2024/05/20 06:03	upstream	61307b7be41a	c0f1611a	.config	console log	report	syz	C		[disk image] [vmlinux] [kernel image]	ci-upstream-kasan-gce-selinux-root	INFO: rcu detected stall in sendmsg
2026/01/25 14:18	upstream	d91a46d6805a	40acda8a	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-kasan-gce-386	INFO: rcu detected stall in sendmsg
2025/03/16 19:38	net	4003c9e78778	e2826670	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-net-this-kasan-gce	INFO: rcu detected stall in sendmsg
2024/12/15 01:28	net	429fde2d81bc	7cbfbb3a	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-net-this-kasan-gce	INFO: rcu detected stall in sendmsg
2024/12/04 19:50	net	5eb7de8cd58e	b50eb251	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-net-this-kasan-gce	INFO: rcu detected stall in sendmsg
2024/12/01 09:20	net	16ed454515a4	68914665	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-net-this-kasan-gce	INFO: rcu detected stall in sendmsg
2024/11/16 20:50	net	8ffade77b633	cfe3a04a	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-net-this-kasan-gce	INFO: rcu detected stall in sendmsg
2024/12/19 02:30	net-next	c1bad69f8baf	1432fc84	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-net-kasan-gce	INFO: rcu detected stall in sendmsg
2024/11/17 04:28	net-next	38f83a57aa8e	cfe3a04a	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-net-kasan-gce	INFO: rcu detected stall in sendmsg
2024/10/26 12:38	net-next	6d858708d465	65e8686b	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-net-kasan-gce	INFO: rcu detected stall in sendmsg
2024/10/10 09:34	net-next	09cf85ef183a	0278d004	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-net-kasan-gce	INFO: rcu detected stall in sendmsg
2024/05/13 11:13	net-next	cddd2dc6390b	9026e142	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-net-kasan-gce	INFO: rcu detected stall in sendmsg
2024/12/06 17:55	linux-next	af2ea8ab7a54	9ac0fdc6	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-linux-next-kasan-gce-root	INFO: rcu detected stall in sendmsg
2024/11/22 15:25	linux-next	cfba9f07a1d6	4b25d554	.config	console log	report	syz / log			[disk image] [vmlinux] [kernel image]	ci-upstream-linux-next-kasan-gce-root	INFO: rcu detected stall in sendmsg
2024/10/29 15:02	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	c67e9601e29a	66aeb999	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci2-upstream-usb	INFO: rcu detected stall in sendmsg
2024/10/27 12:19	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	c6d9e43954bf	65e8686b	.config	console log	report	syz / log			[disk image] [vmlinux] [kernel image]	ci2-upstream-usb	INFO: rcu detected stall in sendmsg
2024/10/23 10:45	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	c6d9e43954bf	15fa2979	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci2-upstream-usb	INFO: rcu detected stall in sendmsg
2024/10/19 05:36	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	07b887f8236e	cd6fc0a3	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci2-upstream-usb	INFO: rcu detected stall in sendmsg
2024/10/13 12:21	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	4a9fe2a8ac53	084d8178	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci2-upstream-usb	INFO: rcu detected stall in sendmsg
2024/10/09 06:19	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	4a9fe2a8ac53	402f1df0	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci2-upstream-usb	INFO: rcu detected stall in sendmsg
2024/10/08 12:57	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	4a9fe2a8ac53	402f1df0	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci2-upstream-usb	INFO: rcu detected stall in sendmsg
2024/09/30 17:52	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	9852d85ec9d4	bbd4e0a4	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci2-upstream-usb	INFO: rcu detected stall in sendmsg
2024/06/22 16:21	linux-next	f76698bd9a8c	edc5149a	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-linux-next-kasan-gce-root	INFO: rcu detected stall in sendmsg
2025/09/16 05:06	upstream	46a51f4f5eda	e2beed91	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-kasan-gce-386	BUG: soft lockup in sendmsg
2024/10/24 09:56	bpf	0ee288e69d03	15fa2979	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-bpf-kasan-gce	BUG: soft lockup in sendmsg
2024/12/16 11:06	bpf-next	00a5acdbf398	7cbfbb3a	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-bpf-next-kasan-gce	BUG: soft lockup in sendmsg
2024/10/11 03:47	bpf-next	5bd48a3a14df	8fbfc0c8	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-bpf-next-kasan-gce	BUG: soft lockup in sendmsg
2024/06/04 01:14	bpf-next	96a27ee76f0e	0aba2352	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-bpf-next-kasan-gce	BUG: soft lockup in sendmsg

Crashes (65):

Assets (help?)

2026/07/06 22:21

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