rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P24448/1:b..l P24421/1:b..l
rcu: (detected by 1, t=10503 jiffies, g=199349, q=738 ncpus=2)
task:syz-executor.3 state:R running task stack:24888 pid:24421 tgid:24420 ppid:23360 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0x17e8/0x4a50 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:kasan_check_range+0x1be/0x290 mm/kasan/generic.c:189
Code: 07 48 85 ed 48 0f 49 dd 48 83 e3 f8 48 29 dd 74 12 41 80 3b 00 0f 85 a6 00 00 00 49 ff c3 48 ff cd 75 ee 5b 41 5c 41 5e 41 5f <5d> e9 a7 4c b4 09 40 84 ed 75 5f f7 c5 00 ff 00 00 75 5c f7 c5 00
RSP: 0018:ffffc90004176df0 EFLAGS: 00000256
RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff81729ca0
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8fad38a8
RBP: 0000000000000000 R08: ffffffff8fad38af R09: 1ffffffff1f5a715
R10: dffffc0000000000 R11: fffffbfff1f5a716 R12: 1ffff9200082edcc
R13: ffffffff81a4faa6 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:545 [inline]
cpu_online include/linux/cpumask.h:1155 [inline]
trace_lock_release include/trace/events/lock.h:69 [inline]
lock_release+0xb0/0x9f0 kernel/locking/lockdep.c:5765
rcu_lock_release include/linux/rcupdate.h:339 [inline]
rcu_read_unlock include/linux/rcupdate.h:812 [inline]
is_bpf_text_address+0x280/0x2a0 kernel/bpf/core.c:770
kernel_text_address+0xa7/0xe0 kernel/extable.c:125
__kernel_text_address+0xd/0x40 kernel/extable.c:79
unwind_get_return_address+0x5d/0xc0 arch/x86/kernel/unwind_orc.c:369
arch_stack_walk+0x125/0x1b0 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
save_stack+0xfb/0x1f0 mm/page_owner.c:156
__set_page_owner+0x8d/0x810 mm/page_owner.c:325
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1468
prep_new_page mm/page_alloc.c:1476 [inline]
get_page_from_freelist+0x2e2d/0x2ee0 mm/page_alloc.c:3402
__alloc_pages_noprof+0x256/0x6c0 mm/page_alloc.c:4660
alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2265
shmem_alloc_folio mm/shmem.c:1628 [inline]
shmem_alloc_and_add_folio+0x24d/0xdb0 mm/shmem.c:1668
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+0x324/0x640 mm/filemap.c:4015
shmem_file_write_iter+0xfc/0x120 mm/shmem.c:2919
call_write_iter include/linux/fs.h:2114 [inline]
new_sync_write fs/read_write.c:497 [inline]
vfs_write+0xa74/0xc90 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+0xf5/0x240 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9786c7bc2f
RSP: 002b:00007f9787a25e80 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000001000000 RCX: 00007f9786c7bc2f
RDX: 0000000001000000 RSI: 00007f977ca00000 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000000 R09: 000000000000559d
R10: 0000000020005642 R11: 0000000000000293 R12: 0000000000000003
R13: 00007f9787a25f80 R14: 00007f9787a25f40 R15: 00007f977ca00000
task:modprobe state:R running task stack:22352 pid:24448 tgid:24448 ppid:146 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0x17e8/0x4a50 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:arch_stack_walk+0x11d/0x1b0 arch/x86/kernel/stacktrace.c:26
Code: bd 70 ff ff ff 4c 89 e6 4c 89 fa e8 1d b4 09 00 8b 9d 70 ff ff ff 31 ff 89 de e8 1e cb 5e 00 85 db 74 4b 4c 8d bd 70 ff ff ff <4c> 89 ff e8 7b 82 09 00 48 89 c3 31 ff 48 89 c6 e8 9e cb 5e 00 48
RSP: 0018:ffffc900044b7220 EFLAGS: 00000293
RAX: ffffffff81376b5f RBX: ffffffff8ba00130 RCX: ffff88801d2e9e00
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffffc900044b72b0 R08: ffffffff81410dd5 R09: ffffffff814108cf
R10: 0000000000000003 R11: ffff88801d2e9e00 R12: ffff88801d2e9e00
R13: ffffffff8181e730 R14: ffffc900044b7300 R15: ffffc900044b7220
stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
save_stack+0xfb/0x1f0 mm/page_owner.c:156
__reset_page_owner+0x75/0x3f0 mm/page_owner.c:302
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1088 [inline]
free_unref_folios+0xf23/0x19e0 mm/page_alloc.c:2614
folios_put_refs+0x93a/0xa60 mm/swap.c:1024
free_pages_and_swap_cache+0x2ea/0x690 mm/swap_state.c:329
__tlb_batch_free_encoded_pages mm/mmu_gather.c:136 [inline]
tlb_batch_pages_flush mm/mmu_gather.c:149 [inline]
tlb_flush_mmu_free mm/mmu_gather.c:366 [inline]
tlb_flush_mmu+0x3a3/0x680 mm/mmu_gather.c:373
tlb_finish_mmu+0xd4/0x200 mm/mmu_gather.c:465
exit_mmap+0x44f/0xc80 mm/mmap.c:3325
__mmput+0x115/0x3c0 kernel/fork.c:1346
exit_mm+0x220/0x310 kernel/exit.c:568
do_exit+0x99e/0x27e0 kernel/exit.c:864
do_group_exit+0x207/0x2c0 kernel/exit.c:1026
__do_sys_exit_group kernel/exit.c:1037 [inline]
__se_sys_exit_group kernel/exit.c:1035 [inline]
__x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1035
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f05c2d32a90
RSP: 002b:00007ffe19ac0528 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f05c2e23860 RCX: 00007f05c2d32a90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000001
RBP: 00007f05c2e23860 R08: 00007ffe19ac03a0 R09: 00007ffe19ac0480
R10: 00007ffe19ac03e0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f05c2e27658 R15: 0000000000000001
rcu: rcu_preempt kthread starved for 10634 jiffies! g199349 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:26320 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0x17e8/0x4a50 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/0x1370 kernel/rcu/tree.c:2000
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2202
kthread+0x2f2/0x390 kernel/kthread.c:389
ret_from_fork+0x4d/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:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 24452 Comm: syz-executor.2 Not tainted 6.9.0-syzkaller-10323-g8f6a15f095a6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:srso_alias_safe_ret+0x0/0x7 arch/x86/lib/retpoline.S:171
Code: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc <48> 8d 64 24 08 c3 cc e8 f4 ff ff ff 0f 0b cc cc cc cc cc cc cc cc
RSP: 0018:ffffc90000007a90 EFLAGS: 00000086
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff81727634
RDX: 0000000000000000 RSI: ffffffff8c1fe180 RDI: ffffffff8c1fe140
RBP: ffffc90000007c08 R08: ffffffff8fad38af R09: 1ffffffff1f5a715
R10: dffffc0000000000 R11: fffffbfff1f5a716 R12: 1ffff92000000f60
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000001
FS: 00007f44a6f4a6c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f44a6f49ec0 CR3: 0000000023eec000 CR4: 0000000000350ef0
Call Trace:
srso_alias_return_thunk+0x5/0xfbef5 arch/x86/lib/retpoline.S:181
rcu_dynticks_curr_cpu_in_eqs include/linux/context_tracking.h:122 [inline]
rcu_is_watching+0x15/0xb0 kernel/rcu/tree.c:724
trace_lock_acquire include/trace/events/lock.h:24 [inline]
lock_acquire+0xe3/0x550 kernel/locking/lockdep.c:5725
rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
rcu_read_lock include/linux/rcupdate.h:781 [inline]
send_sigqueue+0x132/0x760 kernel/signal.c:1979
posix_timer_event kernel/time/posix-timers.c:298 [inline]
posix_timer_fn+0x18a/0x3a0 kernel/time/posix-timers.c:324
__run_hrtimer kernel/time/hrtimer.c:1687 [inline]
__hrtimer_run_queues+0x5a7/0xd50 kernel/time/hrtimer.c:1751
hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1813
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
__sysvec_apic_timer_interrupt+0x112/0x3f0 arch/x86/kernel/apic/apic.c:1049
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:rseq_signal_deliver include/linux/rseq.h:44 [inline]
RIP: 0010:setup_rt_frame arch/x86/kernel/signal.c:212 [inline]
RIP: 0010:handle_signal arch/x86/kernel/signal.c:267 [inline]
RIP: 0010:arch_do_signal_or_restart+0x328/0x860 arch/x86/kernel/signal.c:312
Code: 31 ff e8 9b de 63 00 44 89 f8 83 e0 10 0f 85 9c 00 00 00 e8 ea da 63 00 e9 cc 00 00 00 e8 e0 da 63 00 4c 89 e7 e8 68 10 05 00 01 00 00 00 e8 0e 4b 33 00 49 8d bc 24 68 15 00 00 be 08 00 00
RSP: 0018:ffffc90003c8fdc0 EFLAGS: 00000246
RAX: ffffffff81325625 RBX: 0000000000000000 RCX: 0000000000040000
RDX: ffffc90009e51000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffffc90003c8fec8 R08: ffffffff8132560d R09: 1ffff1100d41b000
R10: dffffc0000000000 R11: ffffed100d41b001 R12: ffff88806a0d8000
R13: ffffc90003c8fe00 R14: 1ffff92000791fbc R15: dffffc0000000000
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+0x102/0x240 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f44a6f4fae4
Code: b9 ff ff ff ff ff ff ff 7f 41 89 fd 49 c1 e5 04 4f 8d 54 2b 28 45 8b 33 41 f6 c6 01 75 54 41 8b 43 04 83 f8 01 75 5d 0f 01 f9 <66> 90 49 89 d0 49 c1 e0 20 49 09 c0 4d 21 c8 49 8b 5a 08 4d 2b 43
RSP: 002b:00007f44a6f4a088 EFLAGS: 00000246
RAX: 00000000b209ff0a RBX: 0000000000000000 RCX: 0000000000000000
RDX: 000000000000037d RSI: 00007f44a6f4a140 RDI: 0000000000000001
RBP: 00007f44a6f4a0d0 R08: 0000000000000000 R09: 7fffffffffffffff
R10: 00007f44a6f4b0b8 R11: 00007f44a6f4b080 R12: 0000000000000000
R13: 0000000000000010 R14: 0000000000045cce R15: 00007ffece29bec8