rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P9375/2:b..l
rcu: (detected by 1, t=10503 jiffies, g=33053, q=289 ncpus=2)
task:syz-executor.0 state:R running task stack:25088 pid:9375 tgid:9374 ppid:7396 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0x1796/0x49d0 kernel/sched/core.c:6745
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7067
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:lock_acquire+0x264/0x550 kernel/locking/lockdep.c:5758
Code: 2b 00 74 08 4c 89 f7 e8 0a 22 86 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:ffffc9000b73f600 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff920016e7ecc RCX: 0000000000000001
RDX: dffffc0000000000 RSI: ffffffff8bcacd00 RDI: ffffffff8c1f1800
RBP: ffffc9000b73f750 R08: ffffffff92f71587 R09: 1ffffffff25ee2b0
R10: dffffc0000000000 R11: fffffbfff25ee2b1 R12: 1ffff920016e7ec8
R13: dffffc0000000000 R14: ffffc9000b73f660 R15: 0000000000000246
rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
rcu_read_lock include/linux/rcupdate.h:781 [inline]
percpu_ref_tryget_many include/linux/percpu-refcount.h:241 [inline]
percpu_ref_tryget+0x31/0x180 include/linux/percpu-refcount.h:266
css_tryget include/linux/cgroup_refcnt.h:45 [inline]
get_mem_cgroup_from_mm+0x103/0x2a0 mm/memcontrol.c:1270
__mem_cgroup_charge+0x16/0x80 mm/memcontrol.c:7509
mem_cgroup_charge include/linux/memcontrol.h:691 [inline]
shmem_alloc_and_add_folio+0x394/0xdb0 mm/shmem.c:1677
shmem_get_folio_gfp+0x82d/0x1f50 mm/shmem.c:2055
shmem_get_folio mm/shmem.c:2160 [inline]
shmem_write_begin+0x170/0x4d0 mm/shmem.c:2743
generic_perform_write+0x322/0x640 mm/filemap.c:4015
shmem_file_write_iter+0xfc/0x120 mm/shmem.c:2919
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: 0033:0x7f809be7bdef
RSP: 002b:00007f809cb5fe80 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00000000013bd7ef RCX: 00007f809be7bdef
RDX: 00000000013bd7ef RSI: 00007f8091c00000 RDI: 0000000000000004
RBP: 0000000000000000 R08: 0000000000000000 R09: 000000000000553d
R10: 00000000000003cc R11: 0000000000000293 R12: 0000000000000004
R13: 00007f809cb5ff80 R14: 00007f809cb5ff40 R15: 00007f8091c00000
rcu: rcu_preempt kthread starved for 10537 jiffies! g33053 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:26448 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0x1796/0x49d0 kernel/sched/core.c:6745
__schedule_loop kernel/sched/core.c:6822 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6837
schedule_timeout+0x1be/0x310 kernel/time/timer.c:2581
rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2000
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2202
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 PID: 9392 Comm: syz-executor.1 Not tainted 6.10.0-rc4-syzkaller-00301-g5f583a3162ff #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:local_bh_enable include/linux/bottom_half.h:33 [inline]
RIP: 0010:fpregs_unlock arch/x86/include/asm/fpu/api.h:80 [inline]
RIP: 0010:fpu__clear_user_states+0x1af/0x270 arch/x86/kernel/fpu/core.c:771
Code: 89 f0 48 c1 e8 03 0f b6 04 28 84 c0 75 41 41 89 9c 24 40 19 00 00 4c 89 e7 be 08 00 00 00 e8 98 45 c2 00 f0 41 80 64 24 01 bf <4c> 89 ef be 00 02 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d e9 ca b5 23
RSP: 0018:ffffc9000d77fd88 EFLAGS: 00000246
RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff81364568
RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffff888021388000
RBP: dffffc0000000000 R08: ffff888021388007 R09: 1ffff11004271000
R10: dffffc0000000000 R11: ffffed1004271001 R12: ffff888021388000
R13: ffffffff813643fc R14: ffff888021389940 R15: ffff888021389940
FS: 00007f0b40d3a6c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020c18000 CR3: 00000000213e8000 CR4: 00000000003506f0
Call Trace:
handle_signal arch/x86/kernel/signal.c:283 [inline]
arch_do_signal_or_restart+0x4fb/0x860 arch/x86/kernel/signal.c:312
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0xc9/0x370 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0b400a4830
Code: 83 c0 16 83 e0 f7 74 12 50 48 8d 3d da 99 04 00 e8 15 78 fa ff 0f 1f 44 00 00 c3 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 <83> ff 21 74 0b c3 66 2e 0f 1f 84 00 00 00 00 00 55 53 48 89 f3 48
RSP: 002b:00007f0b40d39bb8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000000 RBX: 00007f0b401b3f88 RCX: 00007f0b4007d0a9
RDX: 00007f0b40d39bc0 RSI: 00007f0b40d39cf0 RDI: 0000000000000021
RBP: 00007f0b401b3f80 R08: 00007f0b40d3a6c0 R09: 00007f0b40d3a6c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0b401b3f8c
R13: 000000000000000b R14: 00007fffe2559af0 R15: 00007fffe2559bd8