Date | Name | Commit | Repro | Result |
---|---|---|---|---|
2025/03/16 | linux-6.1.y (ToT) | 344a09659766 | C | [report] BUG: workqueue lockup |
2025/03/16 | upstream (ToT) | cb82ca153949 | C | Didn't crash |
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Date | Name | Commit | Repro | Result |
---|---|---|---|---|
2025/03/16 | linux-6.1.y (ToT) | 344a09659766 | C | [report] BUG: workqueue lockup |
2025/03/16 | upstream (ToT) | cb82ca153949 | C | Didn't crash |
Kernel | Title | Rank 🛈 | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
---|---|---|---|---|---|---|---|---|---|---|
linux-6.1 | INFO: rcu detected stall in nsim_fib_event_work | 1 | 1 | 397d | 397d | 0/3 | auto-obsoleted due to no activity on 2024/09/19 04:15 | |||
linux-5.15 | INFO: rcu detected stall in nsim_fib_event_work missing-backport origin:upstream | 1 | syz | error | 6 | 23h21m | 315d | 0/3 | upstream: reported syz repro on 2024/09/01 09:18 | |
linux-6.1 | INFO: rcu detected stall in nsim_fib_event_work (2) | 1 | 1 | 280d | 280d | 0/3 | auto-obsoleted due to no activity on 2025/01/14 20:10 | |||
upstream | INFO: rcu detected stall in nsim_fib_event_work mm | 1 | C | error | 3 | 19d | 73d | 0/29 | upstream: reported C repro on 2025/05/01 18:02 |
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P4349/1:b..l (detected by 1, t=10502 jiffies, g=6285, q=175 ncpus=2) task:kworker/1:3 state:R running task stack:0 pid:4349 ppid:2 flags:0x00000008 Workqueue: events nsim_fib_event_work Call trace: __switch_to+0x2f4/0x568 arch/arm64/kernel/process.c:555 context_switch kernel/sched/core.c:5244 [inline] __schedule+0xdd4/0x1b2c kernel/sched/core.c:6561 preempt_schedule_irq+0x8c/0x1b8 kernel/sched/core.c:6873 arm64_preempt_schedule_irq+0x44/0x58 arch/arm64/kernel/entry-common.c:265 __el1_irq arch/arm64/kernel/entry-common.c:474 [inline] el1_interrupt+0x3c/0x54 arch/arm64/kernel/entry-common.c:486 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:491 el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:581 fib_find_matching_alias net/ipv4/fib_trie.c:1018 [inline] fib_alias_hw_flags_set+0xe4/0x8c0 net/ipv4/fib_trie.c:1052 nsim_fib4_rt_hw_flags_set drivers/net/netdevsim/fib.c:353 [inline] nsim_fib4_rt_add drivers/net/netdevsim/fib.c:370 [inline] nsim_fib4_rt_insert drivers/net/netdevsim/fib.c:432 [inline] nsim_fib4_event drivers/net/netdevsim/fib.c:464 [inline] nsim_fib_event drivers/net/netdevsim/fib.c:884 [inline] nsim_fib_event_work+0x1388/0x263c drivers/net/netdevsim/fib.c:1494 process_one_work+0x7f4/0x13a8 kernel/workqueue.c:2292 process_scheduled_works kernel/workqueue.c:2355 [inline] worker_thread+0xb30/0xfbc kernel/workqueue.c:2441 kthread+0x250/0x2d8 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:864 rcu: rcu_preempt kthread starved for 10500 jiffies! g6285 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:0 pid:16 ppid:2 flags:0x00000008 Call trace: __switch_to+0x2f4/0x568 arch/arm64/kernel/process.c:555 context_switch kernel/sched/core.c:5244 [inline] __schedule+0xdd4/0x1b2c kernel/sched/core.c:6561 schedule+0xc4/0x170 kernel/sched/core.c:6637 schedule_timeout+0x180/0x2c8 kernel/time/timer.c:1965 rcu_gp_fqs_loop+0x2a8/0x134c kernel/rcu/tree.c:1706 rcu_gp_kthread+0xc0/0x2f8 kernel/rcu/tree.c:1905 kthread+0x250/0x2d8 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:864 rcu: Stack dump where RCU GP kthread last ran: CPU: 1 PID: 4515 Comm: syz.3.19 Not tainted 6.1.141-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline] pc : _raw_spin_unlock_irq+0x44/0x90 kernel/locking/spinlock.c:202 lr : __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline] lr : _raw_spin_unlock_irq+0x3c/0x90 kernel/locking/spinlock.c:202 sp : ffff800020ef7630 x29: ffff800020ef7630 x28: 1ffff000041deff5 x27: 1fffe0001928880a x26: 1ffff000041def9c x25: 1fffe0001928880b x24: dfff800000000000 x23: 0000000000000000 x22: ffff0000c9443780 x21: ffff0000c9444050 x20: 0000000000000000 x19: ffff0000c0c3dc80 x18: 0000000000000000 x17: 0000000000000000 x16: ffff8000082d1c00 x15: 0000ffff8cd45908 x14: 0000000000000000 x13: 1ffff00002a0e0b1 x12: 0000000000ff0100 x11: ff0080000a88a3b4 x10: 0000000000000003 x9 : 0000000000000000 x8 : 00000000000000e0 x7 : ffff8000081d11f4 x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000 x2 : ffff800020ef7580 x1 : ffff800011a7d7e0 x0 : ffff80018a773000 Call trace: arch_local_irq_enable arch/arm64/include/asm/irqflags.h:35 [inline] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline] _raw_spin_unlock_irq+0x44/0x90 kernel/locking/spinlock.c:202 spin_unlock_irq include/linux/spinlock.h:401 [inline] __set_current_blocked+0x194/0x1e0 kernel/signal.c:3060 set_current_blocked+0x50/0x60 kernel/signal.c:3044 restore_sigframe arch/arm64/kernel/signal.c:646 [inline] __arm64_sys_rt_sigreturn+0x258/0x1e00 arch/arm64/kernel/signal.c:700 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x138 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2025/06/21 23:37 | linux-6.1.y | 58485ff1a74f | d6cdfb8a | .config | console log | report | syz / log | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-arm64 | INFO: rcu detected stall in nsim_fib_event_work | ||
2025/04/30 15:38 | linux-6.1.y | 535ec20c5027 | 85a5a23f | .config | console log | report | syz / log | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-arm64 | INFO: rcu detected stall in nsim_fib_event_work | ||
2025/03/16 03:46 | linux-6.1.y | 344a09659766 | e2826670 | .config | console log | report | syz / log | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-arm64 | INFO: rcu detected stall in nsim_fib_event_work |