rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 0-...!: (1 GPs behind) idle=e1b/1/0x4000000000000000 softirq=34646/34647 fqs=21
(t=10500 jiffies g=51689 q=793)
rcu: rcu_preempt kthread timer wakeup didn't happen for 10447 jiffies! g51689 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: Possible timer handling issue on cpu=1 timer-softirq=32778
rcu: rcu_preempt kthread starved for 10448 jiffies! g51689 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:28936 pid: 14 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0xa9a/0x4900 kernel/sched/core.c:6253
schedule+0xd2/0x260 kernel/sched/core.c:6326
schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1881
rcu_gp_fqs_loop+0x186/0x810 kernel/rcu/tree.c:1955
rcu_gp_kthread+0x1de/0x320 kernel/rcu/tree.c:2128
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 16227 Comm: syz-executor.4 Not tainted 5.16.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__sanitizer_cov_trace_cmp8+0x0/0x70 kernel/kcov.c:266
Code: fe 72 22 44 89 c6 48 83 c2 01 48 89 4c 38 f0 48 c7 44 38 e0 04 00 00 00 48 89 74 38 e8 4e 89 54 c8 20 48 89 10 c3 0f 1f 40 00 <49> 89 f8 bf 03 00 00 00 4c 8b 14 24 48 89 f1 65 48 8b 34 25 40 70
RSP: 0018:ffffc90000fd8be8 EFLAGS: 00000046
RAX: 0000000080010000 RBX: ffff88802922e3a8 RCX: 0000000000000000
RDX: ffff88802a78c140 RSI: 000000969db5b796 RDI: 000000969db5dea6
RBP: 0000000000002710 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff8165f591 R11: 0000000000000000 R12: 000000969db5dea6
R13: 000000969db5b796 R14: 0000000000000001 R15: 000000969db5b796
FS: 00007f1e283fd700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2e82d000 CR3: 0000000074f3c000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
ktime_add_safe kernel/time/hrtimer.c:335 [inline]
hrtimer_add_expires include/linux/hrtimer.h:266 [inline]
hrtimer_forward+0x130/0x260 kernel/time/hrtimer.c:1066
hrtimer_forward_now include/linux/hrtimer.h:506 [inline]
perf_swevent_hrtimer+0x254/0x3f0 kernel/events/core.c:10605
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x1c0/0xe50 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
__sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1103
sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:constant_test_bit arch/x86/include/asm/bitops.h:207 [inline]
RIP: 0010:test_bit include/asm-generic/bitops/instrumented-non-atomic.h:135 [inline]
RIP: 0010:ext4_forced_shutdown fs/ext4/ext4.h:2225 [inline]
RIP: 0010:ext4_da_write_begin+0x120/0xad0 fs/ext4/inode.c:2933
Code: af 78 06 00 00 be 08 00 00 00 4c 8d bd 80 03 00 00 4c 89 ff e8 b1 26 ab ff 4c 89 f9 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 <80> 3c 01 00 0f 85 8b 08 00 00 4c 8b bd 80 03 00 00 31 ff 49 d1 ef
RSP: 0018:ffffc900029f7490 EFLAGS: 00000a02
RAX: dffffc0000000000 RBX: ffff888027fdb2e0 RCX: 1ffff1100fa83c70
RDX: ffffed100fa83c71 RSI: 0000000000000008 RDI: ffff88807d41e380
RBP: ffff88807d41e000 R08: 0000000000000000 R09: ffff88807d41e387
R10: ffffed100fa83c70 R11: 0000000000000000 R12: ffffc900029f7608
R13: ffff888027fdb508 R14: 0000000003439800 R15: ffff88807d41e380
generic_perform_write+0x205/0x510 mm/filemap.c:3754
ext4_buffered_write_iter+0x1ac/0x3b0 fs/ext4/file.c:269
ext4_file_write_iter+0x423/0x14e0 fs/ext4/file.c:681
call_write_iter include/linux/fs.h:2162 [inline]
do_iter_readv_writev+0x472/0x750 fs/read_write.c:725
do_iter_write+0x188/0x710 fs/read_write.c:851
vfs_iter_write+0x70/0xa0 fs/read_write.c:892
iter_file_splice_write+0x6fa/0xc10 fs/splice.c:689
do_splice_from fs/splice.c:767 [inline]
direct_splice_actor+0x110/0x180 fs/splice.c:936
splice_direct_to_actor+0x34b/0x8c0 fs/splice.c:891
do_splice_direct+0x1b3/0x280 fs/splice.c:979
do_sendfile+0xaf2/0x1250 fs/read_write.c:1245
__do_sys_sendfile64 fs/read_write.c:1310 [inline]
__se_sys_sendfile64 fs/read_write.c:1296 [inline]
__x64_sys_sendfile64+0x1cc/0x210 fs/read_write.c:1296
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f1e29a87e99
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f1e283fd168 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f1e29b9af60 RCX: 00007f1e29a87e99
RDX: 0000000000000000 RSI: 0000000000000013 RDI: 0000000000000005
RBP: 00007f1e29ae1ff1 R08: 0000000000000000 R09: 0000000000000000
R10: 00008400fffffffb R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc5e08fe4f R14: 00007f1e283fd300 R15: 0000000000022000
NMI backtrace for cpu 0
CPU: 0 PID: 16054 Comm: syz-executor.1 Not tainted 5.16.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1b3/0x230 lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
rcu_dump_cpu_stacks+0x25e/0x3f0 kernel/rcu/tree_stall.h:343
print_cpu_stall kernel/rcu/tree_stall.h:627 [inline]
check_cpu_stall kernel/rcu/tree_stall.h:711 [inline]
rcu_pending kernel/rcu/tree.c:3878 [inline]
rcu_sched_clock_irq.cold+0x5c/0x759 kernel/rcu/tree.c:2597
update_process_times+0x16d/0x200 kernel/time/timer.c:1785
tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:226
tick_sched_timer+0x1b0/0x2d0 kernel/time/tick-sched.c:1428
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x1c0/0xe50 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
__sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1103
sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:lock_acquire+0x1ef/0x510 kernel/locking/lockdep.c:5605
Code: 96 a6 7e 83 f8 01 0f 85 b4 02 00 00 9c 58 f6 c4 02 0f 85 9f 02 00 00 48 83 7c 24 08 00 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24
RSP: 0018:ffffc90001177050 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff9200022ee0c RCX: 6059bc9210b23956
RDX: 1ffff1100561d98b RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8ff7aa07
R10: fffffbfff1fef540 R11: 0000000000000000 R12: 0000000000000002
R13: 0000000000000000 R14: ffffffff8bb812a0 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:268 [inline]
rcu_read_lock include/linux/rcupdate.h:688 [inline]
percpu_ref_put_many.constprop.0+0x2c/0x1a0 include/linux/percpu-refcount.h:330
percpu_ref_put include/linux/percpu-refcount.h:351 [inline]
css_put include/linux/cgroup.h:404 [inline]
__mem_cgroup_charge+0x6d/0x90 mm/memcontrol.c:6688
mem_cgroup_charge include/linux/memcontrol.h:713 [inline]
__filemap_add_folio+0x724/0xe20 mm/filemap.c:906
filemap_add_folio+0xab/0x1d0 mm/filemap.c:999
__filemap_get_folio+0x3bc/0xe10 mm/filemap.c:1962
pagecache_get_page+0x2c/0x1a0 mm/folio-compat.c:125
ext4_da_write_begin+0x3bc/0xad0 fs/ext4/inode.c:2958
generic_perform_write+0x205/0x510 mm/filemap.c:3754
ext4_buffered_write_iter+0x1ac/0x3b0 fs/ext4/file.c:269
ext4_file_write_iter+0x423/0x14e0 fs/ext4/file.c:681
call_write_iter include/linux/fs.h:2162 [inline]
do_iter_readv_writev+0x472/0x750 fs/read_write.c:725
do_iter_write+0x188/0x710 fs/read_write.c:851
vfs_iter_write+0x70/0xa0 fs/read_write.c:892
iter_file_splice_write+0x6fa/0xc10 fs/splice.c:689
do_splice_from fs/splice.c:767 [inline]
direct_splice_actor+0x110/0x180 fs/splice.c:936
splice_direct_to_actor+0x34b/0x8c0 fs/splice.c:891
do_splice_direct+0x1b3/0x280 fs/splice.c:979
do_sendfile+0xaf2/0x1250 fs/read_write.c:1245
__do_sys_sendfile64 fs/read_write.c:1310 [inline]
__se_sys_sendfile64 fs/read_write.c:1296 [inline]
__x64_sys_sendfile64+0x1cc/0x210 fs/read_write.c:1296
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f9db9d15e99
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f9db868b168 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f9db9e28f60 RCX: 00007f9db9d15e99
RDX: 0000000000000000 RSI: 0000000000000013 RDI: 0000000000000005
RBP: 00007f9db9d6fff1 R08: 0000000000000000 R09: 0000000000000000
R10: 00008400fffffffb R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff824ea69f R14: 00007f9db868b300 R15: 0000000000022000
sched: RT throttling activated
----------------
Code disassembly (best guess), 1 bytes skipped:
0: 72 22 jb 0x24
2: 44 89 c6 mov %r8d,%esi
5: 48 83 c2 01 add $0x1,%rdx
9: 48 89 4c 38 f0 mov %rcx,-0x10(%rax,%rdi,1)
e: 48 c7 44 38 e0 04 00 movq $0x4,-0x20(%rax,%rdi,1)
15: 00 00
17: 48 89 74 38 e8 mov %rsi,-0x18(%rax,%rdi,1)
1c: 4e 89 54 c8 20 mov %r10,0x20(%rax,%r9,8)
21: 48 89 10 mov %rdx,(%rax)
24: c3 retq
25: 0f 1f 40 00 nopl 0x0(%rax)
* 29: 49 89 f8 mov %rdi,%r8 <-- trapping instruction
2c: bf 03 00 00 00 mov $0x3,%edi
31: 4c 8b 14 24 mov (%rsp),%r10
35: 48 89 f1 mov %rsi,%rcx
38: 65 gs
39: 48 rex.W
3a: 8b .byte 0x8b
3b: 34 25 xor $0x25,%al
3d: 40 rex
3e: 70 .byte 0x70