rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-...!: (1 GPs behind) idle=980c/1/0x4000000000000000 softirq=100332/100333 fqs=7
(detected by 1, t=10502 jiffies, g=158865, q=44 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 5977 Comm: syz-executor.4 Not tainted 6.1.0-syzkaller-13872-gb6bb9676f216 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:__kasan_check_write+0x0/0x10 mm/kasan/shadow.c:37
Code: 4c 89 fe 31 c0 e8 b0 a4 de 08 eb d3 cc cc cc cc cc cc cc cc cc cc cc cc cc cc 89 f6 48 8b 0c 24 31 d2 e9 73 ec ff ff 0f 1f 00 <89> f6 48 8b 0c 24 ba 01 00 00 00 e9 60 ec ff ff 55 41 56 53 48 89
RSP: 0018:ffffc90000007b38 EFLAGS: 00000056
RAX: 00000000ffffff01 RBX: dffffc0000000000 RCX: ffffffff816e0ada
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffc90000007ba0
RBP: ffffc90000007c10 R08: dffffc0000000000 R09: fffffbfff246f9da
R10: fffffbfff246f9da R11: 1ffffffff246f9d9 R12: ffffffff9237cec8
R13: 1ffff92000000f74 R14: ffffc90000007ba0 R15: 1ffffffff246f9da
FS: 00007f045620a700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002006d000 CR3: 0000000082504000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
instrument_atomic_read_write include/linux/instrumented.h:102 [inline]
atomic_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:542 [inline]
queued_spin_lock include/asm-generic/qspinlock.h:111 [inline]
do_raw_spin_lock+0x147/0x3a0 kernel/locking/spinlock_debug.c:115
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:111 [inline]
_raw_spin_lock_irqsave+0xdd/0x120 kernel/locking/spinlock.c:162
debug_object_deactivate+0x61/0x420 lib/debugobjects.c:739
debug_hrtimer_deactivate kernel/time/hrtimer.c:425 [inline]
debug_deactivate kernel/time/hrtimer.c:481 [inline]
__run_hrtimer kernel/time/hrtimer.c:1653 [inline]
__hrtimer_run_queues+0x2f9/0xa60 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x3a6/0xfd0 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1096 [inline]
__sysvec_apic_timer_interrupt+0xf9/0x280 arch/x86/kernel/apic/apic.c:1113
sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1107
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:stack_trace_save+0x14f/0x1f0 kernel/stacktrace.c:123
Code: f6 31 c9 e8 93 07 ba ff 42 8a 04 2b 84 c0 0f 85 93 00 00 00 8b 44 24 50 48 c7 44 24 20 0e 36 e0 45 4b c7 44 3d 00 00 00 00 00 <43> c7 44 3d 08 00 00 00 00 65 48 8b 0c 25 28 00 00 00 48 3b 8c 24
RSP: 0018:ffffc9000326f2e0 EFLAGS: 00000246
RAX: 0000000000000011 RBX: 1ffff9200064de66 RCX: ffffffff900cc000
RDX: ffffffff90228f00 RSI: ffffffff8b0da9e0 RDI: ffffffff8b697600
RBP: ffffc9000326f3c0 R08: dffffc0000000000 R09: fffffbfff1d603be
R10: fffffbfff1d603be R11: 1ffffffff1d603bd R12: ffffc9000326f330
R13: dffffc0000000000 R14: ffffc9000326f320 R15: 1ffff9200064de60
kasan_save_stack mm/kasan/common.c:45 [inline]
kasan_set_track+0x4c/0x70 mm/kasan/common.c:52
kasan_save_free_info+0x27/0x40 mm/kasan/generic.c:518
____kasan_slab_free+0xd6/0x120 mm/kasan/common.c:236
kasan_slab_free include/linux/kasan.h:177 [inline]
slab_free_hook mm/slub.c:1781 [inline]
slab_free_freelist_hook+0x12e/0x1a0 mm/slub.c:1807
slab_free mm/slub.c:3787 [inline]
kmem_cache_free+0x94/0x1d0 mm/slub.c:3809
jbd2_free_handle include/linux/jbd2.h:1601 [inline]
jbd2_journal_stop+0x894/0xba0 fs/jbd2/transaction.c:1956
__ext4_journal_stop+0xf8/0x190 fs/ext4/ext4_jbd2.c:133
__mark_inode_dirty+0x1e7/0x600 fs/fs-writeback.c:2419
mark_inode_dirty include/linux/fs.h:2462 [inline]
generic_write_end+0x173/0x460 fs/buffer.c:2184
ext4_da_write_end+0x7b9/0x860 fs/ext4/inode.c:3175
generic_perform_write+0x401/0x610 mm/filemap.c:3783
ext4_buffered_write_iter+0x122/0x3a0 fs/ext4/file.c:285
ext4_file_write_iter+0x1d0/0x1900
call_write_iter include/linux/fs.h:2186 [inline]
new_sync_write fs/read_write.c:491 [inline]
vfs_write+0x7b5/0xbb0 fs/read_write.c:584
ksys_write+0x19b/0x2c0 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f045548c0d9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f045620a168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f04555abf80 RCX: 00007f045548c0d9
RDX: 000000000208e24b RSI: 0000000020000100 RDI: 0000000000000003
RBP: 00007f04554e7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd52116b1f R14: 00007f045620a300 R15: 0000000000022000
rcu: rcu_preempt kthread starved for 10488 jiffies! g158865 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:26488 pid:16 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0x9d1/0xe40 kernel/sched/core.c:6555
schedule+0xcb/0x190 kernel/sched/core.c:6631
schedule_timeout+0x1b9/0x300 kernel/time/timer.c:2167
rcu_gp_fqs_loop+0x309/0x1070 kernel/rcu/tree.c:1654
rcu_gp_kthread+0xa5/0x390 kernel/rcu/tree.c:1853
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 PID: 20659 Comm: kworker/1:15 Not tainted 6.1.0-syzkaller-13872-gb6bb9676f216 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Workqueue: events pcpu_balance_workfn
RIP: 0010:csd_lock_wait kernel/smp.c:413 [inline]
RIP: 0010:smp_call_function_many_cond+0xe9c/0x1420 kernel/smp.c:987
Code: 83 e6 01 31 ff e8 d4 54 0b 00 41 83 e4 01 75 0e e8 a9 50 0b 00 eb 4c 0f 1f 80 00 00 00 00 f3 90 48 b8 00 00 00 00 00 fc ff df <0f> b6 04 03 84 c0 75 10 41 f7 06 01 00 00 00 74 23 e8 7e 50 0b 00
RSP: 0018:ffffc900053cf9e0 EFLAGS: 00000293
RAX: dffffc0000000000 RBX: 1ffff1101730852d RCX: ffff88808afc8000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc900053cfb70 R08: ffffffff818276bc R09: fffffbfff212de31
R10: fffffbfff212de31 R11: 1ffffffff212de30 R12: 0000000000000001
R13: 0000000000000000 R14: ffff8880b9842968 R15: ffff8880b993b280
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8f945a8000 CR3: 00000000305e9000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
on_each_cpu_cond_mask+0x3b/0x80 kernel/smp.c:1155
pcpu_post_unmap_tlb_flush mm/percpu-vm.c:188 [inline]
pcpu_reclaim_populated mm/percpu.c:2201 [inline]
pcpu_balance_workfn+0x6ab/0x1220 mm/percpu.c:2237
process_one_work+0x81c/0xd10 kernel/workqueue.c:2289
worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308