INFO: rcu detected stall in new_sync

Kernel	Title	Rank 🛈	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	INFO: rcu detected stall in new_sync_write (2) cgroups	1				1	1988d	1988d	0/29	auto-closed as invalid on 2020/04/06 23:25
upstream	INFO: rcu detected stall in new_sync_write (3) kernel	1				1	1596d	1596d	0/29	auto-closed as invalid on 2021/06/03 04:29

rcu: INFO: rcu_sched detected stalls on CPUs/tasks: (detected by 1, t=10502 jiffies, g=452161, q=208) rcu: All QSes seen, last rcu_sched kthread activity 10500 (4295245324-4295234824), jiffies_till_next_fqs=1, root ->qsmask 0x0 syz-executor.4 R running task 25464 16331 24595 0x00004002 Call Trace: <IRQ> sched_show_task /kernel/sched/core.c:5755 [inline] sched_show_task.cold+0x2ef/0x350 /kernel/sched/core.c:5730 print_other_cpu_stall /kernel/rcu/tree_stall.h:410 [inline] check_cpu_stall /kernel/rcu/tree_stall.h:536 [inline] rcu_pending /kernel/rcu/tree.c:2736 [inline] rcu_sched_clock_irq.cold+0x837/0x8c0 /kernel/rcu/tree.c:2183 update_process_times+0x32/0x80 /kernel/time/timer.c:1639 tick_sched_handle+0xa2/0x190 /kernel/time/tick-sched.c:167 tick_sched_timer+0x47/0x130 /kernel/time/tick-sched.c:1296 __run_hrtimer /kernel/time/hrtimer.c:1389 [inline] __hrtimer_run_queues+0x364/0xd90 /kernel/time/hrtimer.c:1451 hrtimer_interrupt+0x2ea/0x730 /kernel/time/hrtimer.c:1509 local_apic_timer_interrupt /arch/x86/kernel/apic/apic.c:1068 [inline] smp_apic_timer_interrupt+0x10b/0x550 /arch/x86/kernel/apic/apic.c:1093 apic_timer_interrupt+0xf/0x20 /arch/x86/entry/entry_64.S:828 </IRQ> RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x50 /kernel/kcov.c:95 Code: 89 25 24 5b 19 09 41 bc f4 ff ff ff e8 2d 35 ea ff 48 c7 05 0e 5b 19 09 00 00 00 00 e9 77 e9 ff ff 90 90 90 90 90 90 90 90 90 <55> 48 89 e5 65 48 8b 04 25 c0 fd 01 00 65 8b 15 f4 a6 90 7e 81 e2 RSP: 0018:ffff88807f35f2c8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000002 RBX: 0000000000000000 RCX: ffffffff81942816 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005 RBP: ffff88807f35f428 R08: ffff88803ecac3c0 R09: fffffbfff14a6d51 R10: fffffbfff14a6d50 R11: ffffffff8a536a87 R12: 0000000000000000 R13: 0000000000000000 R14: dffffc0000000000 R15: ffff88807f35f5c8 shrink_zones /mm/vmscan.c:2940 [inline] do_try_to_free_pages+0x3cb/0x11e0 /mm/vmscan.c:2998 try_to_free_mem_cgroup_pages+0x314/0xa00 /mm/vmscan.c:3300 try_charge+0x648/0x1430 /mm/memcontrol.c:2399 mem_cgroup_try_charge+0x136/0x590 /mm/memcontrol.c:6089 mem_cgroup_try_charge_delay+0x1f/0xa0 /mm/memcontrol.c:6104 shmem_getpage_gfp+0x88e/0x2650 /mm/shmem.c:1856 shmem_getpage /mm/shmem.c:139 [inline] shmem_write_begin+0x105/0x1e0 /mm/shmem.c:2467 generic_perform_write+0x23b/0x540 /mm/filemap.c:3327 __generic_file_write_iter+0x25e/0x630 /mm/filemap.c:3456 generic_file_write_iter+0x356/0x620 /mm/filemap.c:3488 call_write_iter /./include/linux/fs.h:1870 [inline] new_sync_write+0x4d3/0x770 /fs/read_write.c:483 __vfs_write+0xe1/0x110 /fs/read_write.c:496 vfs_write+0x268/0x5d0 /fs/read_write.c:558 ksys_write+0x14f/0x290 /fs/read_write.c:611 __do_sys_write /fs/read_write.c:623 [inline] __se_sys_write /fs/read_write.c:620 [inline] __x64_sys_write+0x73/0xb0 /fs/read_write.c:620 do_syscall_64+0xfd/0x6a0 /arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x459819 Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fe792de5c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459819 RDX: 00000000ffffff76 RSI: 0000000020000000 RDI: 0000000000000005 RBP: 000000000075c070 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe792de66d4 R13: 00000000004c98c0 R14: 00000000004e0d38 R15: 00000000ffffffff rcu: rcu_sched kthread starved for 10500 jiffies! g452161 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 rcu: RCU grace-period kthread stack dump: rcu_sched R running task 29048 10 2 0x80004000 Call Trace: context_switch /kernel/sched/core.c:3254 [inline] __schedule+0x772/0x1530 /kernel/sched/core.c:3880 schedule+0xa5/0x260 /kernel/sched/core.c:3944 schedule_timeout+0x44e/0xbc0 /kernel/time/timer.c:1807 rcu_gp_fqs_loop /kernel/rcu/tree.c:1611 [inline] rcu_gp_kthread+0x835/0x1320 /kernel/rcu/tree.c:1768 kthread+0x361/0x430 /kernel/kthread.c:255 ret_from_fork+0x24/0x30 /arch/x86/entry/entry_64.S:352

Crashes (5):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Manager
2019/07/20 20:12	upstream	c6dd78fcb8ee	1656845f	.config	console log	report	ci-upstream-kasan-gce-root
2019/03/23 09:35	upstream	fd1f297b794c	3361bde5	.config	console log	report	ci-upstream-kasan-gce-selinux-root
2019/03/15 05:37	upstream	3b319ee220a8	d72db19b	.config	console log	report	ci-upstream-kasan-gce-root
2019/03/12 10:57	upstream	ea295481b6e3	12365b99	.config	console log	report	ci-upstream-kasan-gce-root
2019/03/10 06:30	linux-next	cf08baa29613	12365b99	.config	console log	report	ci-upstream-linux-next-kasan-gce-root

Crashes (5):

Assets (help?)