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| 🐞 Open [970] 🐞 Fixed [3880] 🐞 Invalid [8364] 📈 Kernel Health 📈 Bug Lifetimes 📈 Fuzzing 📈 Crashes |
| Kernel | Title | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
|---|---|---|---|---|---|---|---|---|---|
| linux-4.19 | INFO: rcu detected stall in garp_join_timer | 7 | 877d | 908d | 0/1 | auto-closed as invalid on 2020/06/07 13:30 | |||
| linux-4.19 | BUG: soft lockup in garp_join_timer | 13 | 62d | 388d | 0/1 | upstream: reported on 2021/06/11 07:01 | |||
| upstream | INFO: rcu detected stall in garp_join_timer | 1 | 948d | 948d | 0/22 | closed as invalid on 2019/11/29 14:24 | |||
| linux-4.14 | INFO: rcu detected stall in garp_join_timer | 4 | 872d | 887d | 0/1 | auto-closed as invalid on 2020/06/12 11:13 | |||
| linux-4.19 | INFO: rcu detected stall in garp_join_timer (2) | 1 | 744d | 744d | 0/1 | auto-closed as invalid on 2020/10/18 11:34 | |||
| linux-4.19 | INFO: rcu detected stall in garp_join_timer (3) | 1 | 537d | 537d | 0/1 | auto-closed as invalid on 2021/05/13 13:34 |
rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 0-...!: (10499 ticks this GP) idle=6d1/1/0x4000000000000000 softirq=368975/368975 fqs=1 (t=10501 jiffies g=483337 q=1344) rcu: rcu_preempt kthread starved for 10500 jiffies! g483337 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 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:26576 pid: 14 ppid: 2 flags:0x00004000 Call Trace: <TASK> context_switch kernel/sched/core.c:4972 [inline] __schedule+0xb72/0x1460 kernel/sched/core.c:6253 schedule+0x12b/0x1f0 kernel/sched/core.c:6326 schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1881 rcu_gp_fqs_loop+0x1fd/0x770 kernel/rcu/tree.c:1955 rcu_gp_kthread+0xa5/0x350 kernel/rcu/tree.c:2128 kthread+0x468/0x490 kernel/kthread.c:327 ret_from_fork+0x1f/0x30 </TASK> rcu: Stack dump where RCU GP kthread last ran: Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 12174 Comm: kworker/u4:3 Not tainted 5.16.0-rc8-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:csd_lock_wait kernel/smp.c:440 [inline] RIP: 0010:smp_call_function_many_cond+0xbc5/0xda0 kernel/smp.c:969 Code: 00 00 fc ff df 75 0e e8 09 b2 0b 00 eb 4c 0f 1f 80 00 00 00 00 f3 90 42 0f b6 04 3b 84 c0 75 11 41 f7 45 00 01 00 00 00 74 2b <e8> e6 b1 0b 00 eb e4 44 89 e9 80 e1 07 80 c1 03 38 c1 7c e2 4c 89 RSP: 0018:ffffc9000a877820 EFLAGS: 00000202 RAX: 0000000000000000 RBX: 1ffff1101734831d RCX: ffff888034e63a00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc9000a877960 R08: ffffffff8178d032 R09: ffffffff8442fcb0 R10: 0000000000000009 R11: ffff888034e63a00 R12: 0000000000000000 R13: ffff8880b9a418e8 R14: ffff8880b9b3a640 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb190c75718 CR3: 000000000c88e000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> on_each_cpu_cond_mask+0x3b/0x80 kernel/smp.c:1135 on_each_cpu include/linux/smp.h:71 [inline] text_poke_sync arch/x86/kernel/alternative.c:1112 [inline] text_poke_bp_batch+0x310/0x940 arch/x86/kernel/alternative.c:1297 text_poke_flush arch/x86/kernel/alternative.c:1451 [inline] text_poke_finish+0x16/0x30 arch/x86/kernel/alternative.c:1458 arch_jump_label_transform_apply+0x13/0x20 arch/x86/kernel/jump_label.c:146 static_key_enable_cpuslocked+0x12d/0x250 kernel/jump_label.c:177 static_key_enable+0x16/0x20 kernel/jump_label.c:190 toggle_allocation_gate+0xbf/0x460 mm/kfence/core.c:733 process_one_work+0x853/0x1140 kernel/workqueue.c:2298 worker_thread+0xac1/0x1320 kernel/workqueue.c:2445 kthread+0x468/0x490 kernel/kthread.c:327 ret_from_fork+0x1f/0x30 </TASK> NMI backtrace for cpu 0 CPU: 0 PID: 15398 Comm: syz-executor.1 Not tainted 5.16.0-rc8-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: <IRQ> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1dc/0x2d8 lib/dump_stack.c:106 nmi_cpu_backtrace+0x45f/0x490 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x16a/0x280 lib/nmi_backtrace.c:62 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline] rcu_dump_cpu_stacks+0x22d/0x390 kernel/rcu/tree_stall.h:343 print_cpu_stall kernel/rcu/tree_stall.h:627 [inline] check_cpu_stall kernel/rcu/tree_stall.h:711 [inline] rcu_pending kernel/rcu/tree.c:3878 [inline] rcu_sched_clock_irq+0x1e33/0x2bc0 kernel/rcu/tree.c:2597 update_process_times+0x197/0x200 kernel/time/timer.c:1785 tick_sched_handle kernel/time/tick-sched.c:226 [inline] tick_sched_timer+0x27d/0x420 kernel/time/tick-sched.c:1428 __run_hrtimer kernel/time/hrtimer.c:1685 [inline] __hrtimer_run_queues+0x4cb/0xa60 kernel/time/hrtimer.c:1749 hrtimer_interrupt+0x3b3/0x1040 kernel/time/hrtimer.c:1811 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline] __sysvec_apic_timer_interrupt+0xf9/0x270 arch/x86/kernel/apic/apic.c:1103 sysvec_apic_timer_interrupt+0x3e/0xb0 arch/x86/kernel/apic/apic.c:1097 asm_sysvec_apic_timer_interrupt+0x12/0x20 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0xd4/0x130 kernel/locking/spinlock.c:194 Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 92 b1 c1 f7 f6 44 24 21 02 75 4e 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> 87 e2 4c f7 65 8b 05 d8 2b f5 75 85 c0 74 3f 48 c7 04 24 0e 36 RSP: 0018:ffffc90000007ac0 EFLAGS: 00000206 RAX: 73eddd79c6dce800 RBX: 1ffff92000000f5c RCX: ffffffff81667291 RDX: dffffc0000000000 RSI: 0000000000000102 RDI: 0000000000000001 RBP: ffffc90000007b48 R08: dffffc0000000000 R09: fffffbfff1ff3df9 R10: fffffbfff1ff3df9 R11: 0000000000000000 R12: dffffc0000000000 R13: 1ffff92000000f58 R14: ffffc90000007ae0 R15: 0000000000000246 spin_unlock_irqrestore include/linux/spinlock.h:404 [inline] skb_dequeue+0x10e/0x140 net/core/skbuff.c:3216 garp_queue_xmit net/802/garp.c:271 [inline] garp_join_timer+0x95/0x130 net/802/garp.c:423 call_timer_fn+0xf6/0x210 kernel/time/timer.c:1421 expire_timers kernel/time/timer.c:1466 [inline] __run_timers+0x71a/0x910 kernel/time/timer.c:1734 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1747 __do_softirq+0x392/0x7a3 kernel/softirq.c:558 __irq_exit_rcu+0xec/0x170 kernel/softirq.c:637 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1097 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x12/0x20 RIP: 0010:finish_lock_switch+0x1c5/0x350 kernel/sched/core.c:4733 Code: be ff ff ff ff e8 fb 2a ae 08 85 c0 74 37 4d 85 e4 75 58 0f 1f 44 00 00 4c 89 ff e8 75 e2 b0 08 e8 b0 be 2e 00 fb 48 83 c4 10 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 0f 0b 4d 85 e4 0f 85 4a ff ff ff RSP: 0018:ffffc900117a75e8 EFLAGS: 00000286 RAX: 73eddd79c6dce800 RBX: 1ffff11017347410 RCX: ffffffff81667291 RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffff8880b9a3a080 R08: dffffc0000000000 R09: fffffbfff1ff3df0 R10: fffffbfff1ff3df0 R11: 0000000000000000 R12: 0000000000000000 R13: ffff8880b9a3a318 R14: dffffc0000000000 R15: ffff8880b9a395c0 finish_task_switch+0x140/0x630 kernel/sched/core.c:4850 context_switch kernel/sched/core.c:4975 [inline] __schedule+0xb7a/0x1460 kernel/sched/core.c:6253 preempt_schedule_common kernel/sched/core.c:6419 [inline] preempt_schedule+0x14d/0x190 kernel/sched/core.c:6444 preempt_schedule_thunk+0x16/0x18 __raw_spin_unlock include/linux/spinlock_api_smp.h:143 [inline] _raw_spin_unlock+0x36/0x40 kernel/locking/spinlock.c:186 spin_unlock include/linux/spinlock.h:389 [inline] ext4_do_update_inode fs/ext4/inode.c:5095 [inline] ext4_mark_iloc_dirty+0x5f6/0x1ad0 fs/ext4/inode.c:5694 __ext4_mark_inode_dirty+0x3f6/0x720 fs/ext4/inode.c:5890 __ext4_unlink+0x9bb/0xb70 fs/ext4/namei.c:3183 ext4_unlink+0x2eb/0x440 fs/ext4/namei.c:3231 vfs_unlink+0x34d/0x690 fs/namei.c:4100 do_unlinkat+0x4ee/0xa10 fs/namei.c:4167 __do_sys_unlink fs/namei.c:4215 [inline] __se_sys_unlink fs/namei.c:4213 [inline] __x64_sys_unlink+0x45/0x50 fs/namei.c:4213 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7fb192341e99 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb190c96168 EFLAGS: 00000246 ORIG_RAX: 0000000000000057 RAX: ffffffffffffffda RBX: 00007fb192455030 RCX: 00007fb192341e99 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000140 RBP: 00007fb19239bff1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd4ecc5baf R14: 00007fb190c96300 R15: 0000000000022000 </TASK> ---------------- Code disassembly (best guess), 4 bytes skipped: 0: df 75 0e fbstp 0xe(%rbp) 3: e8 09 b2 0b 00 callq 0xbb211 8: eb 4c jmp 0x56 a: 0f 1f 80 00 00 00 00 nopl 0x0(%rax) 11: f3 90 pause 13: 42 0f b6 04 3b movzbl (%rbx,%r15,1),%eax 18: 84 c0 test %al,%al 1a: 75 11 jne 0x2d 1c: 41 f7 45 00 01 00 00 testl $0x1,0x0(%r13) 23: 00 24: 74 2b je 0x51 * 26: e8 e6 b1 0b 00 callq 0xbb211 <-- trapping instruction 2b: eb e4 jmp 0x11 2d: 44 89 e9 mov %r13d,%ecx 30: 80 e1 07 and $0x7,%cl 33: 80 c1 03 add $0x3,%cl 36: 38 c1 cmp %al,%cl 38: 7c e2 jl 0x1c 3a: 4c rex.WR 3b: 89 .byte 0x89
| Manager | Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Title |
|---|---|---|---|---|---|---|---|---|---|---|---|
| ci-upstream-kasan-gce-smack-root | 2022/01/09 21:46 | upstream | 4634129ad9fd | 2ca0d385 | .config | log | report | info | INFO: rcu detected stall in garp_join_timer | ||
| ci-upstream-kasan-gce-selinux-root | 2021/12/28 20:49 | upstream | a8ad9a2434dc | 76c8cf06 | .config | log | report | info | INFO: rcu detected stall in garp_join_timer | ||
| ci-upstream-kasan-gce-smack-root | 2021/12/16 13:22 | upstream | 2b14864acbaa | 572bcb40 | .config | log | report | info | INFO: rcu detected stall in garp_join_timer | ||
| ci-upstream-kasan-gce-selinux-root | 2021/12/13 22:48 | upstream | 2585cf9dfaad | 49ca1f59 | .config | log | report | info | INFO: rcu detected stall in garp_join_timer | ||
| ci-upstream-kasan-gce-smack-root | 2021/12/02 14:09 | upstream | 58e1100fdc59 | 61f86278 | .config | log | report | info | INFO: rcu detected stall in garp_join_timer | ||
| ci-upstream-kasan-gce-smack-root | 2021/12/02 01:17 | upstream | 58e1100fdc59 | 61f86278 | .config | log | report | info | INFO: rcu detected stall in garp_join_timer | ||
| ci-upstream-kasan-gce | 2021/10/26 09:16 | upstream | c2b43854aad9 | c1132b49 | .config | log | report | info | INFO: rcu detected stall in garp_join_timer | ||
| ci-upstream-kasan-gce | 2021/09/21 10:54 | upstream | e8f71f89236e | af796c18 | .config | log | report | info | INFO: rcu detected stall in garp_join_timer | ||
| ci-upstream-kasan-gce-root | 2021/07/04 21:31 | upstream | 3dbdb38e2869 | 55aa55c2 | .config | log | report | info | INFO: rcu detected stall in garp_join_timer | ||
| ci-upstream-kasan-gce | 2021/02/01 00:09 | upstream | 6642d600b541 | fc9fd31e | .config | log | report | info | INFO: rcu detected stall in garp_join_timer | ||
| ci-upstream-net-kasan-gce | 2021/05/11 00:48 | net-next | 48de7c0c1c92 | ca873091 | .config | log | report | info | INFO: rcu detected stall in garp_join_timer | ||
| ci-upstream-linux-next-kasan-gce-root | 2022/01/15 13:32 | linux-next | bd8d9cef2a79 | 723cfaf0 | .config | log | report | info | INFO: rcu detected stall in garp_join_timer | ||
| ci-upstream-kasan-gce | 2020/11/22 15:45 | upstream | a349e4c65960 | 0d27f508 | .config | log | report | info | |||
| ci-upstream-kasan-gce | 2020/08/27 13:58 | upstream | 15bc20c6af4c | 816e0689 | .config | log | report | ||||
| ci-upstream-kasan-gce-root | 2020/08/25 19:12 | upstream | 6a9dc5fd6170 | 344da168 | .config | log | report | ||||
| ci-upstream-kasan-gce-smack-root | 2020/08/24 09:07 | upstream | cb95712138ec | cef5ae68 | .config | log | report | ||||
| ci-upstream-kasan-gce-smack-root | 2020/08/01 23:20 | upstream | 7dc6fd0f3b84 | d895b3be | .config | log | report | ||||
| ci-upstream-kasan-gce-selinux-root | 2020/07/29 08:52 | upstream | 6ba1b005ffc3 | cb93dc6a | .config | log | report | ||||
| ci-upstream-kasan-gce-smack-root | 2020/06/08 09:42 | upstream | 7ae77150d94d | 7751efd0 | .config | log | report | ||||
| ci-upstream-kasan-gce | 2020/04/16 16:08 | upstream | 00086336a8d9 | c743fcb3 | .config | log | report | ||||
| ci-upstream-kasan-gce-smack-root | 2020/02/04 20:01 | upstream | 322bf2d3446a | 93e5e335 | .config | log | report | ||||
| ci-upstream-kasan-gce-root | 2020/02/04 17:53 | upstream | 322bf2d3446a | 93e5e335 | .config | log | report | ||||
| ci-upstream-kasan-gce-386 | 2020/07/12 01:22 | upstream | a581387e415b | 18d18b59 | .config | log | report | ||||
| ci-upstream-kasan-gce-386 | 2020/01/09 16:05 | upstream | b07f636fca1c | ddc3e859 | .config | log | report | ||||
| ci-upstream-linux-next-kasan-gce-root | 2020/06/30 09:17 | linux-next | 36e3135df4d4 | a2cdad9d | .config | log | report |