rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P8216/1:b..l
rcu: (detected by 0, t=10502 jiffies, g=15301, q=262 ncpus=2)
task:syz.1.1040 state:R running task stack:23712 pid:8216 tgid:8214 ppid:5828 task_flags:0x40054c flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5378 [inline]
__schedule+0xf43/0x5890 kernel/sched/core.c:6765
preempt_schedule_common+0x44/0xc0 kernel/sched/core.c:6944
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk.S:12
__raw_spin_unlock include/linux/spinlock_api_smp.h:143 [inline]
_raw_spin_unlock+0x3e/0x50 kernel/locking/spinlock.c:186
spin_unlock include/linux/spinlock.h:391 [inline]
zap_pte_range mm/memory.c:1761 [inline]
zap_pmd_range mm/memory.c:1823 [inline]
zap_pud_range mm/memory.c:1852 [inline]
zap_p4d_range mm/memory.c:1873 [inline]
unmap_page_range+0xec7/0x43a0 mm/memory.c:1894
unmap_single_vma+0x194/0x2b0 mm/memory.c:1940
unmap_vmas+0x22f/0x490 mm/memory.c:1984
exit_mmap+0x1c1/0xba0 mm/mmap.c:1284
__mmput+0x12a/0x410 kernel/fork.c:1356
mmput+0x62/0x70 kernel/fork.c:1378
exit_mm kernel/exit.c:570 [inline]
do_exit+0x9ba/0x2d70 kernel/exit.c:925
do_group_exit+0xd3/0x2a0 kernel/exit.c:1087
get_signal+0x24ed/0x26c0 kernel/signal.c:3036
arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x150/0x2a0 kernel/entry/common.c:218
do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0480b8cde9
RSP: 002b:00007f0481a1c0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000001 RBX: 00007f0480da5fa8 RCX: 00007f0480b8cde9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f0480da5fac
RBP: 00007f0480da5fa0 R08: 00007f0481a1d000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000246 R12: 00007f0480da5fac
R13: 0000000000000000 R14: 00007ffdced9f1b0 R15: 00007ffdced9f298
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g15301 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: Possible timer handling issue on cpu=1 timer-softirq=6345
rcu: rcu_preempt kthread starved for 10502 jiffies! g15301 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:27552 pid:17 tgid:17 ppid:2 task_flags:0x208040 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5378 [inline]
__schedule+0xf43/0x5890 kernel/sched/core.c:6765
__schedule_loop kernel/sched/core.c:6842 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6857
schedule_timeout+0x124/0x280 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:2024
rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:2226
kthread+0x3af/0x750 kernel/kthread.c:464
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 8215 Comm: syz.3.1039 Not tainted 6.14.0-rc3-syzkaller-00060-g6537cfb395f3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x70 kernel/kcov.c:210
Code: 7e 60 e8 a3 ff ff ff 31 c0 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 65 48 8b 15 54 fa 49 7e 65 8b 05 55 fa 49 7e a9 00 01
RSP: 0018:ffffc90000a18df8 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffff8880b872c780 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
RBP: ffff88805d043340 R08: 0000000000000000 R09: fffff520001431a4
R10: ffffffff9ab2b51b R11: 0000000000000002 R12: ffff88805d043340
R13: 0000000000000000 R14: ffff8880b872c680 R15: ffffffff896a68c0
FS: 00007fc308aa06c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c3edf24 CR3: 000000002899c000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__do_trace_hrtimer_start include/trace/events/timer.h:222 [inline]
trace_hrtimer_start include/trace/events/timer.h:222 [inline]
debug_activate kernel/time/hrtimer.c:497 [inline]
enqueue_hrtimer+0x2f/0x3c0 kernel/time/hrtimer.c:1100
__run_hrtimer kernel/time/hrtimer.c:1818 [inline]
__hrtimer_run_queues+0x903/0xae0 kernel/time/hrtimer.c:1865
hrtimer_interrupt+0x392/0x8e0 kernel/time/hrtimer.c:1927
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
__sysvec_apic_timer_interrupt+0x10f/0x400 arch/x86/kernel/apic/apic.c:1055
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0x9f/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__orc_find+0xae/0xf0 arch/x86/kernel/unwind_orc.c:110
Code: 63 13 48 01 da 49 39 d5 73 af 4c 8d 63 fc 49 39 ec 73 b2 4d 29 f7 49 c1 ff 02 4b 8d 14 7f 48 8d 04 50 48 83 c4 08 5b 5d 41 5c <41> 5d 41 5e 41 5f c3 cc cc cc cc 48 83 c4 08 31 c0 5b 5d 41 5c 41
RSP: 0018:ffffc90004ce6fb0 EFLAGS: 00000282
RAX: ffffffff91039c20 RBX: 0000000000000001 RCX: dffffc0000000000
RDX: 0000000000000015 RSI: 0000000000000000 RDI: ffffffff907c50e0
RBP: ffffc90004ce7088 R08: ffffffff91039c26 R09: ffffffff9103929a
R10: ffffc90004ce7040 R11: 0000000000011a26 R12: ffffc90004ce7090
R13: ffffffff821a2685 R14: ffffffff907c50e0 R15: 0000000000000007
orc_find arch/x86/kernel/unwind_orc.c:227 [inline]
unwind_next_frame+0x2be/0x20c0 arch/x86/kernel/unwind_orc.c:494
arch_stack_walk+0x95/0x100 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122
save_stack+0x162/0x1f0 mm/page_owner.c:156
__set_page_owner+0x8b/0x560 mm/page_owner.c:320
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x181/0x1b0 mm/page_alloc.c:1551
prep_new_page mm/page_alloc.c:1559 [inline]
get_page_from_freelist+0xfce/0x2f80 mm/page_alloc.c:3477
__alloc_frozen_pages_noprof+0x221/0x2470 mm/page_alloc.c:4739
alloc_pages_mpol+0x1fc/0x540 mm/mempolicy.c:2270
folio_alloc_mpol_noprof+0x36/0x2f0 mm/mempolicy.c:2289
vma_alloc_folio_noprof+0xee/0x1b0 mm/mempolicy.c:2324
folio_prealloc mm/memory.c:1061 [inline]
alloc_anon_folio mm/memory.c:4822 [inline]
do_anonymous_page mm/memory.c:4879 [inline]
do_pte_missing+0x202f/0x3e10 mm/memory.c:4045
handle_pte_fault mm/memory.c:5889 [inline]
__handle_mm_fault+0x1166/0x2c60 mm/memory.c:6032
handle_mm_fault+0x3fa/0xaa0 mm/memory.c:6201
faultin_page mm/gup.c:1196 [inline]
__get_user_pages+0x773/0x36f0 mm/gup.c:1491
populate_vma_page_range+0x27f/0x3a0 mm/gup.c:1929
__mm_populate+0x1d6/0x380 mm/gup.c:2032
mm_populate include/linux/mm.h:3386 [inline]
vm_mmap_pgoff+0x2d3/0x3a0 mm/util.c:580
ksys_mmap_pgoff+0x7d/0x5c0 mm/mmap.c:607
__do_sys_mmap arch/x86/kernel/sys_x86_64.c:89 [inline]
__se_sys_mmap arch/x86/kernel/sys_x86_64.c:82 [inline]
__x64_sys_mmap+0x125/0x190 arch/x86/kernel/sys_x86_64.c:82
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc307b8cde9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fc308aa0038 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007fc307da5fa0 RCX: 00007fc307b8cde9
RDX: 000000000000000f RSI: 0000000000b36000 RDI: 0000400000000000
RBP: 00007fc307c0e2a0 R08: ffffffffffffffff R09: 0000000000001000
R10: 0000000004008032 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fc307da5fa0 R15: 00007ffd71005a78