rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-...!: (1 GPs behind) idle=490c/1/0x4000000000000000 softirq=23132/23148 fqs=3
rcu: (detected by 1, t=10502 jiffies, g=20485, q=239 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 7732 Comm: syz.4.472 Not tainted 6.13.0-rc4-syzkaller-00078-g059dd502b263 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:__lock_acquire+0xc71/0x2100 kernel/locking/lockdep.c:5196
Code: 00 00 48 c7 c0 c0 79 37 9a 48 c1 e8 03 48 bf 00 00 00 00 00 fc ff df 0f b6 04 38 84 c0 0f 85 24 0d 00 00 83 3d 6f b8 bc 18 00 <75> 39 48 63 9c 24 88 00 00 00 48 89 d8 48 c1 e8 06 48 8d 3c c5 80
RSP: 0018:ffffc90000007930 EFLAGS: 00000046
RAX: 0000000000000004 RBX: 1ffff1100604c165 RCX: ffffffff9a377903
RDX: 0000000000000000 RSI: 0000000000000008 RDI: dffffc0000000000
RBP: ffff888030260b08 R08: ffffffff94270887 R09: 1ffffffff284e110
R10: dffffc0000000000 R11: fffffbfff284e111 R12: ffff888030260ac4
R13: ffff888030260000 R14: 0000000000000000 R15: ffff888030260b28
FS: 00007f730284b6c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2f918ff8 CR3: 0000000034f54000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
debug_object_deactivate+0x158/0x390 lib/debugobjects.c:873
debug_hrtimer_deactivate kernel/time/hrtimer.c:433 [inline]
debug_deactivate+0x1b/0x220 kernel/time/hrtimer.c:475
__run_hrtimer kernel/time/hrtimer.c:1707 [inline]
__hrtimer_run_queues+0x305/0xd30 kernel/time/hrtimer.c:1803
hrtimer_interrupt+0x403/0xa40 kernel/time/hrtimer.c:1865
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
__sysvec_apic_timer_interrupt+0x110/0x420 arch/x86/kernel/apic/apic.c:1055
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:unwind_next_frame+0x4cc/0x22d0 arch/x86/kernel/unwind_orc.c:515
Code: 16 00 00 41 0f b7 1f c1 eb 0b 80 e3 01 48 8b 44 24 28 42 0f b6 04 20 84 c0 4c 8b 74 24 78 0f 85 8d 16 00 00 48 8b 04 24 88 18 <41> 0f b7 1f 83 e3 0f 83 fb 05 0f 8f 89 00 00 00 83 fb 03 0f 8f 09
RSP: 0018:ffffc900051cf810 EFLAGS: 00000246
RAX: ffffc900051cf915 RBX: 0000000000000000 RCX: ffffffff90335e74
RDX: ffffffff90add8a2 RSI: ffffffff90add88a RDI: ffffffff814ba930
RBP: ffffc900051cf930 R08: 000000000000000a R09: ffffc900051cf9d0
R10: ffffc900051cf930 R11: ffffffff818b39d0 R12: dffffc0000000000
R13: ffffc900051cf8e0 R14: ffffc900051cf918 R15: ffffffff90add8a6
arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
unpoison_slab_object mm/kasan/common.c:319 [inline]
__kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:345
kasan_slab_alloc include/linux/kasan.h:250 [inline]
slab_post_alloc_hook mm/slub.c:4119 [inline]
slab_alloc_node mm/slub.c:4168 [inline]
kmem_cache_alloc_noprof+0x1d9/0x380 mm/slub.c:4175
lsm_file_alloc security/security.c:733 [inline]
security_file_alloc+0x32/0x310 security/security.c:2853
init_file+0x91/0x280 fs/file_table.c:156
alloc_empty_file+0xb8/0x1d0 fs/file_table.c:232
alloc_file fs/file_table.c:345 [inline]
alloc_file_pseudo+0x1da/0x290 fs/file_table.c:376
__anon_inode_getfile fs/anon_inodes.c:109 [inline]
__anon_inode_getfd fs/anon_inodes.c:234 [inline]
anon_inode_getfd+0xce/0x1e0 fs/anon_inodes.c:269
__do_sys_fanotify_init fs/notify/fanotify/fanotify_user.c:1558 [inline]
__se_sys_fanotify_init+0x792/0x900 fs/notify/fanotify/fanotify_user.c:1405
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: 0033:0x7f7301985d29
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:00007f730284b038 EFLAGS: 00000246 ORIG_RAX: 000000000000012c
RAX: ffffffffffffffda RBX: 00007f7301b76080 RCX: 00007f7301985d29
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f7301a01b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f7301b76080 R15: 00007ffdcc46e048
rcu: rcu_preempt kthread starved for 10496 jiffies! g20485 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:25976 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0x17fb/0x4be0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6848
schedule_timeout+0x15a/0x290 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2045
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2247
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 UID: 0 PID: 7727 Comm: syz.4.472 Not tainted 6.13.0-rc4-syzkaller-00078-g059dd502b263 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:csd_lock_wait kernel/smp.c:340 [inline]
RIP: 0010:smp_call_function_many_cond+0x19f3/0x2c60 kernel/smp.c:884
Code: 45 8b 65 00 44 89 e6 83 e6 01 31 ff e8 56 e9 0b 00 41 83 e4 01 49 bc 00 00 00 00 00 fc ff df 75 07 e8 01 e5 0b 00 eb 38 f3 90 <42> 0f b6 04 23 84 c0 75 11 41 f7 45 00 01 00 00 00 74 1e e8 e5 e4
RSP: 0000:ffffc9000b32f3e0 EFLAGS: 00000293
RAX: ffffffff81938efb RBX: 1ffff110170c8c65 RCX: ffff888030189e00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9000b32f5e0 R08: ffffffff81938eca R09: 1ffffffff284e110
R10: dffffc0000000000 R11: fffffbfff284e111 R12: dffffc0000000000
R13: ffff8880b8646328 R14: ffff8880b873f940 R15: 0000000000000000
FS: 0000555577506500(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002000b680 CR3: 0000000034f54000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1051
__flush_tlb_multi arch/x86/include/asm/paravirt.h:91 [inline]
flush_tlb_multi arch/x86/mm/tlb.c:939 [inline]
flush_tlb_mm_range+0x329/0x5c0 arch/x86/mm/tlb.c:1025
flush_tlb_page arch/x86/include/asm/tlbflush.h:254 [inline]
ptep_clear_flush+0x11a/0x170 mm/pgtable-generic.c:101
wp_page_copy mm/memory.c:3433 [inline]
do_wp_page+0x1c64/0x49b0 mm/memory.c:3759
handle_pte_fault+0xfa5/0x5ed0 mm/memory.c:5817
__handle_mm_fault mm/memory.c:5944 [inline]
handle_mm_fault+0x1053/0x1ad0 mm/memory.c:6112
do_user_addr_fault arch/x86/mm/fault.c:1338 [inline]
handle_page_fault arch/x86/mm/fault.c:1481 [inline]
exc_page_fault+0x459/0x8b0 arch/x86/mm/fault.c:1539
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f730185c6d9
Code: 01 64 48 8b 04 25 00 00 00 00 48 8d b8 c8 fe ff ff e8 db 55 0c 00 85 c0 75 17 48 8b 84 24 88 00 00 00 48 8b b4 24 a8 00 00 00 <48> 89 b0 00 00 00 20 64 f0 83 2c 25 90 ff ff ff 01 48 8b 84 24 80
RSP: 002b:00007ffdcc46e1b0 EFLAGS: 00010246
RAX: 000000000000b680 RBX: 0000000000000002 RCX: ffffffffe0000000
RDX: 7c6039dd88fe3c4b RSI: 0000000000000000 RDI: 00005555775063c8
RBP: 00007f7301b77ba0 R08: 00007f7301800000 R09: 0000000000000003
R10: 0000000000000001 R11: 0000000000000004 R12: 000000000003e5b7
R13: 00007f7301b76160 R14: 0000000000000032 R15: fffffffffffffffe