INFO: rcu detected stall in generic_file_write

Kernel	Title	Rank 🛈	Count	Last	Reported	Patched	Status
linux-6.1	INFO: rcu detected stall in generic_file_write_iter (3)	1	2	7d04h	30d	0/3	upstream: reported on 2026/07/11 18:33
upstream	INFO: rcu detected stall in generic_file_write_iter (3) mm	1	1	2442d	2442d	0/29	closed as invalid on 2019/12/04 14:04
upstream	INFO: rcu detected stall in generic_file_write_iter (2) exfat	1	2	2657d	2696d	0/29	auto-closed as invalid on 2019/10/25 09:01
upstream	BUG: soft lockup in generic_file_write_iter (2) mm	1	8	1127d	1115d	0/29	auto-obsoleted due to no activity on 2023/10/18 13:34
linux-6.1	INFO: rcu detected stall in generic_file_write_iter (2)	1	17	172d	600d	0/3	auto-obsoleted due to no activity on 2026/05/31 05:00
linux-5.15	INFO: rcu detected stall in generic_file_write_iter (2)	1	39	63d	885d	0/3	upstream: reported on 2024/03/08 18:29
linux-5.15	INFO: rcu detected stall in generic_file_write_iter	1	1	1071d	1071d	0/3	auto-obsoleted due to no activity on 2023/12/13 17:16
upstream	BUG: soft lockup in generic_file_write_iter net fs mm	1	2	1313d	1348d	0/29	auto-obsoleted due to no activity on 2023/04/05 19:12
upstream	INFO: rcu detected stall in generic_file_write_iter mm	1	58	2720d	2862d	0/29	closed as dup on 2018/10/27 15:28
upstream	INFO: rcu detected stall in generic_file_write_iter (5) fs	1	2	2209d	2216d	0/29	auto-closed as invalid on 2020/10/22 01:02
upstream	INFO: rcu detected stall in generic_file_write_iter (7) block	1	1	394d	394d	0/29	auto-obsoleted due to no activity on 2025/10/11 00:51
upstream	INFO: rcu detected stall in generic_file_write_iter (6) mm cgroups	1	2	1694d	1751d	0/29	closed as invalid on 2022/02/08 09:50
linux-6.1	INFO: rcu detected stall in generic_file_write_iter	1	18	728d	841d	0/3	auto-obsoleted due to no activity on 2024/11/12 08:46

rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: (detected by 1, t=10502 jiffies, g=180313, q=37) rcu: All QSes seen, last rcu_preempt kthread activity 10494 (4295069428-4295058934), jiffies_till_next_fqs=1, root ->qsmask 0x0 syz-executor.5 R running task 25144 24667 24666 0x00004002 Call Trace: <IRQ> sched_show_task+0x411/0x560 kernel/sched/core.c:5954 print_other_cpu_stall kernel/rcu/tree_stall.h:430 [inline] check_cpu_stall kernel/rcu/tree_stall.h:558 [inline] rcu_pending kernel/rcu/tree.c:3030 [inline] rcu_sched_clock_irq+0x188c/0x1aa0 kernel/rcu/tree.c:2276 update_process_times+0x12d/0x180 kernel/time/timer.c:1726 tick_sched_handle kernel/time/tick-sched.c:171 [inline] tick_sched_timer+0x263/0x420 kernel/time/tick-sched.c:1314 __run_hrtimer kernel/time/hrtimer.c:1517 [inline] __hrtimer_run_queues+0x3f3/0x840 kernel/time/hrtimer.c:1579 hrtimer_interrupt+0x37c/0xda0 kernel/time/hrtimer.c:1641 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1110 [inline] smp_apic_timer_interrupt+0x109/0x280 arch/x86/kernel/apic/apic.c:1135 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829 </IRQ> RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:752 [inline] RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0xa8/0xe0 kernel/locking/spinlock.c:191 Code: b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 0c 48 c7 c7 d0 d2 2a 89 e8 d7 c4 9b f9 48 83 3d 9f 72 12 01 00 74 2d 4c 89 f7 57 9d <0f> 1f 44 00 00 bf 01 00 00 00 e8 69 c7 3a f9 65 8b 05 7e bd e9 77 RSP: 0018:ffffc9000864f798 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff1255a5a RBX: ffffffff892e49c0 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000282 RBP: ffffc9000864f7a8 R08: ffff8880556b4dd8 R09: fffffbfff1406327 R10: fffffbfff1406327 R11: 0000000000000000 R12: 0000000100018ef3 R13: ffff8880992aa530 R14: 0000000000000282 R15: 1ffff110132554a5 spin_unlock_irqrestore include/linux/spinlock.h:393 [inline] cgroup_file_notify+0x184/0x1a0 kernel/cgroup/cgroup.c:4099 memcg_memory_event include/linux/memcontrol.h:779 [inline] try_charge+0x4f2/0x18a0 mm/memcontrol.c:2453 mem_cgroup_try_charge+0x216/0x550 mm/memcontrol.c:6367 mem_cgroup_try_charge_delay+0x25/0xa0 mm/memcontrol.c:6382 shmem_getpage_gfp+0x1246/0x2f80 mm/shmem.c:1872 shmem_getpage mm/shmem.c:154 [inline] shmem_write_begin+0xcb/0x1b0 mm/shmem.c:2488 generic_perform_write+0x23d/0x4f0 mm/filemap.c:3287 __generic_file_write_iter+0x235/0x500 mm/filemap.c:3416 generic_file_write_iter+0x4b1/0x660 mm/filemap.c:3448 call_write_iter include/linux/fs.h:1901 [inline] new_sync_write fs/read_write.c:483 [inline] __vfs_write+0x5a1/0x740 fs/read_write.c:496 vfs_write+0x270/0x580 fs/read_write.c:558 ksys_pwrite64 fs/read_write.c:665 [inline] __do_sys_pwrite64 fs/read_write.c:675 [inline] __se_sys_pwrite64 fs/read_write.c:672 [inline] __x64_sys_pwrite64+0x162/0x1d0 fs/read_write.c:672 do_syscall_64+0xf7/0x1c0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x415197 Code: 12 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 a1 18 00 00 c3 48 83 ec 08 e8 a7 f9 ff ff 48 89 04 24 49 89 ca b8 12 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 ed f9 ff ff 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:00007fae5e6f7a60 EFLAGS: 00000246 ORIG_RAX: 0000000000000012 RAX: ffffffffffffffda RBX: 00007fae5e6f86d4 RCX: 0000000000415197 RDX: 0000000008100000 RSI: 0000000020000680 RDI: 0000000000000009 RBP: 000000000075c070 R08: fe03f80fe03f80ff R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000ba5 R14: 00000000004cc7cf R15: 000000000075c07c rcu: rcu_preempt kthread starved for 10494 jiffies! g180313 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 rcu: RCU grace-period kthread stack dump: rcu_preempt R running task 28736 10 2 0x80004000 Call Trace: context_switch kernel/sched/core.c:3386 [inline] __schedule+0x87f/0xcd0 kernel/sched/core.c:4082 schedule+0x188/0x210 kernel/sched/core.c:4156 schedule_timeout+0x14f/0x240 kernel/time/timer.c:1895 rcu_gp_fqs_loop kernel/rcu/tree.c:1658 [inline] rcu_gp_kthread+0xe8d/0x17e0 kernel/rcu/tree.c:1818 kthread+0x332/0x350 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352