rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 1-...!: (0 ticks this GP) idle=7b7/1/0x4000000000000000 softirq=102881/102881 fqs=0
(detected by 0, t=10502 jiffies, g=189105, q=101)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 17038 Comm: syz-executor.3 Not tainted 5.15.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:27 [inline]
RIP: 0010:check_preemption_disabled+0x2e/0x1c0 lib/smp_processor_id.c:16
Code: 56 41 55 41 54 53 48 83 ec 10 49 89 f6 49 89 ff 65 48 8b 04 25 28 00 00 00 48 89 44 24 08 0f 1f 44 00 00 65 8b 1d ca e9 00 76 <65> 8b 2d 33 44 01 76 89 ee 81 e6 ff ff ff 7f 31 ff 0f 1f 44 00 00
RSP: 0018:ffffc90000dc0bf0 EFLAGS: 00000086
RAX: 2a313a470e752d00 RBX: 0000000000000001 RCX: 0000000080010002
RDX: ffff88801bdc5700 RSI: ffffffff8ad4a9e0 RDI: ffffffff8ad4a9a0
RBP: ffffc90000dc0ce8 R08: ffffffff81737b99 R09: fffffbfff1bfa5f6
R10: fffffbfff1bfa5f6 R11: 0000000000000000 R12: ffff8880b9b2a240
R13: dffffc0000000000 R14: ffffffff8ad4a9e0 R15: ffffffff8ad4a9a0
FS: 00007f4eb2662700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd06b5e63a4 CR3: 0000000079308000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_lockdep_current_cpu_online+0x36/0x130 kernel/rcu/tree.c:1169
rcu_read_lock_held_common kernel/rcu/update.c:112 [inline]
rcu_read_lock_sched_held+0x74/0x130 kernel/rcu/update.c:123
trace_hrtimer_start+0xaf/0x270 include/trace/events/timer.h:195
debug_activate kernel/time/hrtimer.c:476 [inline]
enqueue_hrtimer kernel/time/hrtimer.c:1084 [inline]
__run_hrtimer kernel/time/hrtimer.c:1702 [inline]
__hrtimer_run_queues+0x59e/0xa60 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x3b3/0x1040 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
__sysvec_apic_timer_interrupt+0xf9/0x270 arch/x86/kernel/apic/apic.c:1103
sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20
RIP: 0010:kasan_quarantine_put+0x84/0x230 mm/kasan/quarantine.c:223
Code: e8 51 ca ba ff 48 c7 04 24 00 00 00 00 9c 8f 04 24 f7 04 24 00 02 00 00 0f 85 83 00 00 00 41 f7 c7 00 02 00 00 74 01 fb 31 c0 <48> 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f c3 48 8d 80 40 56 03 00 45
RSP: 0018:ffffc9000442f738 EFLAGS: 00000206
RAX: 2a313a470e752d01 RBX: ffff88802052ec00 RCX: ffffffff81663561
RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff88802052ec00 R08: dffffc0000000000 R09: fffffbfff1feebf0
R10: fffffbfff1feebf0 R11: 0000000000000000 R12: 0000000000000000
R13: ffffc9000442f7c8 R14: 0000000000026708 R15: 0000000000000286
kasan_slab_free include/linux/kasan.h:235 [inline]
slab_free_hook mm/slub.c:1723 [inline]
slab_free_freelist_hook+0x12e/0x1a0 mm/slub.c:1749
slab_free mm/slub.c:3513 [inline]
kfree+0xe1/0x330 mm/slub.c:4561
iter_file_splice_write+0xd3f/0xfa0 fs/splice.c:717
do_splice_from fs/splice.c:767 [inline]
direct_splice_actor+0xe6/0x1c0 fs/splice.c:936
splice_direct_to_actor+0x529/0xd00 fs/splice.c:891
do_splice_direct+0x291/0x3e0 fs/splice.c:979
do_sendfile+0x6fe/0x1040 fs/read_write.c:1245
__do_sys_sendfile64 fs/read_write.c:1304 [inline]
__se_sys_sendfile64+0xfa/0x1d0 fs/read_write.c:1296
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f4eb50ecae9
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:00007f4eb2662188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f4eb51fff60 RCX: 00007f4eb50ecae9
RDX: 0000000020000240 RSI: 0000000000000009 RDI: 0000000000000009
RBP: 00007f4eb5146f25 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000007fff R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffca0099ddf R14: 00007f4eb2662300 R15: 0000000000022000
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g189105 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: Possible timer handling issue on cpu=1 timer-softirq=73088
rcu: rcu_preempt kthread starved for 10502 jiffies! g189105 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:26576 pid: 14 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4969 [inline]
__schedule+0xb72/0x1460 kernel/sched/core.c:6250
schedule+0x12b/0x1f0 kernel/sched/core.c:6323
schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1881
rcu_gp_fqs_loop+0x1fd/0x770 kernel/rcu/tree.c:1955
rcu_gp_kthread+0xa5/0x350 kernel/rcu/tree.c:2128
kthread+0x468/0x490 kernel/kthread.c:327
ret_from_fork+0x1f/0x30
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
----------------
Code disassembly (best guess):
0: 56 push %rsi
1: 41 55 push %r13
3: 41 54 push %r12
5: 53 push %rbx
6: 48 83 ec 10 sub $0x10,%rsp
a: 49 89 f6 mov %rsi,%r14
d: 49 89 ff mov %rdi,%r15
10: 65 48 8b 04 25 28 00 mov %gs:0x28,%rax
17: 00 00
19: 48 89 44 24 08 mov %rax,0x8(%rsp)
1e: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
23: 65 8b 1d ca e9 00 76 mov %gs:0x7600e9ca(%rip),%ebx # 0x7600e9f4
* 2a: 65 8b 2d 33 44 01 76 mov %gs:0x76014433(%rip),%ebp # 0x76014464 <-- trapping instruction
31: 89 ee mov %ebp,%esi
33: 81 e6 ff ff ff 7f and $0x7fffffff,%esi
39: 31 ff xor %edi,%edi
3b: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)