rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P7979/1:b..l
rcu: (detected by 0, t=10502 jiffies, g=36829, q=810 ncpus=2)
task:syz-executor.4 state:R running task stack:22768 pid:7979 tgid:7977 ppid:7846 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5192 [inline]
__schedule+0x17e8/0x4a20 kernel/sched/core.c:6529
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6851
irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:addr_has_metadata mm/kasan/kasan.h:333 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:177 [inline]
RIP: 0010:kasan_check_range+0x24/0x290 mm/kasan/generic.c:189
Code: 90 90 90 90 90 90 66 0f 1f 00 55 41 57 41 56 41 54 53 b0 01 48 85 f6 0f 84 a0 01 00 00 4c 8d 04 37 49 39 f8 0f 82 56 02 00 00 <48> 89 fd 48 c1 ed 2f 81 fd fe ff 01 00 0f 86 43 02 00 00 48 89 fb
RSP: 0018:ffffc900045e7630 EFLAGS: 00000212
RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff816f3d34
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8fae04a8
RBP: ffffc900045e77a8 R08: ffffffff8fae04b0 R09: 0000000000000000
R10: ffffc900045e7820 R11: fffff520008bcf07 R12: 1ffff920008bced4
R13: dffffc0000000000 R14: 0000000000000000 R15: dffffc0000000000
instrument_atomic_read include/linux/instrumented.h:68 [inline]
_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
cpumask_test_cpu include/linux/cpumask.h:559 [inline]
cpu_online include/linux/cpumask.h:1099 [inline]
trace_lock_acquire include/trace/events/lock.h:24 [inline]
lock_acquire+0xd4/0x550 kernel/locking/lockdep.c:5788
rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
rcu_read_lock include/linux/rcupdate.h:838 [inline]
filemap_get_entry+0x144/0x4e0 mm/filemap.c:1837
shmem_get_folio_gfp+0x2af/0x2660 mm/shmem.c:2105
shmem_get_folio mm/shmem.c:2294 [inline]
shmem_write_begin+0x170/0x4d0 mm/shmem.c:2899
generic_perform_write+0x322/0x640 mm/filemap.c:4016
shmem_file_write_iter+0xfc/0x120 mm/shmem.c:3075
new_sync_write fs/read_write.c:497 [inline]
vfs_write+0xa72/0xc90 fs/read_write.c:590
ksys_write+0x1a0/0x2c0 fs/read_write.c:643
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f36e927bbef
RSP: 002b:00007f36e9f65e80 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00000000013bd7ef RCX: 00007f36e927bbef
RDX: 00000000013bd7ef RSI: 00007f36df000000 RDI: 0000000000000007
RBP: 0000000000000000 R08: 0000000000000000 R09: 00000000000054f3
R10: 000000002000ab42 R11: 0000000000000293 R12: 0000000000000007
R13: 00007f36e9f65f80 R14: 00007f36e9f65f40 R15: 00007f36df000000
rcu: rcu_preempt kthread starved for 10533 jiffies! g36829 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:26408 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5192 [inline]
__schedule+0x17e8/0x4a20 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_timeout+0x1be/0x310 kernel/time/timer.c:2581
rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2029
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2231
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:144
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 PID: 10 Comm: kworker/0:0H Not tainted 6.10.0-rc3-next-20240611-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Workqueue: kblockd blk_mq_timeout_work
RIP: 0010:finish_task_switch+0x1ea/0x870 kernel/sched/core.c:5066
Code: c9 50 e8 69 b6 0b 00 48 83 c4 08 4c 89 f7 e8 7d 38 00 00 0f 1f 44 00 00 4c 89 f7 e8 40 ff 31 0a e8 0b 30 37 00 fb 48 8b 5d c0 <48> 8d bb f8 15 00 00 48 89 f8 48 c1 e8 03 49 be 00 00 00 00 00 fc
RSP: 0018:ffffc900000f7548 EFLAGS: 00000286
RAX: efdda95542b40e00 RBX: ffff8880176c1e00 RCX: ffffffff816fafba
RDX: dffffc0000000000 RSI: ffffffff8bcac1a0 RDI: ffffffff8c200760
RBP: ffffc900000f7590 R08: ffffffff92fcb7bf R09: 1ffffffff25f96f7
R10: dffffc0000000000 R11: fffffbfff25f96f8 R12: 1ffff11017287ec7
R13: dffffc0000000000 R14: ffff8880b943e8c0 R15: ffff8880b943f638
FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2fa45000 CR3: 000000002c9fc000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
context_switch kernel/sched/core.c:5195 [inline]
__schedule+0x17f0/0x4a20 kernel/sched/core.c:6529
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6851
irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707
RIP: 0010:lock_acquire+0x264/0x550 kernel/locking/lockdep.c:5821
Code: 2b 00 74 08 4c 89 f7 e8 1a 18 8a 00 f6 44 24 61 02 0f 85 85 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25
RSP: 0018:ffffc900000f7920 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff9200001ef30 RCX: efdda95542b40e00
RDX: dffffc0000000000 RSI: ffffffff8bcad320 RDI: ffffffff8c200760
RBP: ffffc900000f7a70 R08: ffffffff92fcb747 R09: 1ffffffff25f96e8
R10: dffffc0000000000 R11: fffffbfff25f96e9 R12: 1ffff9200001ef2c
R13: dffffc0000000000 R14: ffffc900000f7980 R15: 0000000000000246
rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
rcu_read_lock include/linux/rcupdate.h:838 [inline]
percpu_ref_tryget_many include/linux/percpu-refcount.h:241 [inline]
percpu_ref_tryget+0x3b/0x260 include/linux/percpu-refcount.h:266
blk_mq_timeout_work+0x10d/0x470 block/blk-mq.c:1640
process_one_work kernel/workqueue.c:3248 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3329
worker_thread+0x86d/0xd50 kernel/workqueue.c:3409
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:144
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244