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WARNING: CPU: 1 PID: 12291 at kernel/rcu/tree_stall.h:989 rcu_check_gp_start_stall+0x2cf/0x460 kernel/rcu/tree_stall.h:989
Modules linked in:
CPU: 1 UID: 0 PID: 12291 Comm: syz.0.1680 Not tainted 6.13.0-rc2-syzkaller-00059-g00a5acdbf398 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024
RIP: 0010:rcu_check_gp_start_stall+0x2cf/0x460 kernel/rcu/tree_stall.h:989
Code: c7 60 bb 3e 9a be 04 00 00 00 e8 2c 13 80 00 b8 01 00 00 00 87 05 51 12 b9 18 85 c0 0f 85 1a ff ff ff 48 c7 c0 80 c8 93 8e 90 <0f> 0b 90 49 39 c7 74 47 48 c7 c0 10 99 19 90 48 c1 e8 03 42 0f b6
RSP: 0018:ffffc90000a18bb8 EFLAGS: 00010046
RAX: ffffffff8e93c880 RBX: 0000000100003925 RCX: ffffffff8185a904
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff9a3ebb60
RBP: ffffc90000a18e10 R08: 0000000000000003 R09: fffffbfff347d76c
R10: dffffc0000000000 R11: fffffbfff347d76c R12: dffffc0000000000
R13: dffffc0000000000 R14: 0000000000000246 R15: ffffffff8e93c880
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000000602f8000 CR4: 00000000003526f0
DR0: ffff8880b8927a20 DR1: 0000000000000000 DR2: 0000000020000300
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
rcu_core+0x650/0x17a0 kernel/rcu/tree.c:2818
handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:554
__do_softirq kernel/softirq.c:588 [inline]
invoke_softirq kernel/softirq.c:428 [inline]
__irq_exit_rcu+0xf7/0x220 kernel/softirq.c:655
irq_exit_rcu+0x9/0x30 kernel/softirq.c:671
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:430 [inline]
RIP: 0010:__pv_queued_spin_lock_slowpath+0x781/0xdb0 kernel/locking/qspinlock.c:508
Code: ff 42 0f b6 04 2b 84 c0 75 6c 66 c7 84 24 b0 00 00 00 00 01 48 8b 44 24 40 42 0f b6 04 28 84 c0 75 77 41 80 3e 00 74 0c f3 90 <41> ff c4 75 d2 e9 a0 00 00 00 4c 89 f7 be 02 00 00 00 e8 e8 c9 3a
RSP: 0018:ffffc900046076a0 EFLAGS: 00000206
RAX: 0000000000000000 RBX: 1ffff920008c0eea RCX: ffffc90004607701
RDX: 0000000000000000 RSI: ffffffff8c0a9760 RDI: ffffffff8c5f99c0
RBP: ffffc900046077d8 R08: ffffffff942a18bf R09: 1ffffffff2854317
R10: dffffc0000000000 R11: fffffbfff2854318 R12: 00000000fffff144
R13: dffffc0000000000 R14: ffff8880234f6dc8 R15: ffffc90004607760
pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:584 [inline]
queued_spin_lock_slowpath+0x42/0x50 arch/x86/include/asm/qspinlock.h:51
queued_spin_lock include/asm-generic/qspinlock.h:114 [inline]
do_raw_spin_lock+0x272/0x370 kernel/locking/spinlock_debug.c:116
spin_lock include/linux/spinlock.h:351 [inline]
lock_for_kill+0xdc/0x210 fs/dcache.c:675
dput+0x18a/0x2b0 fs/dcache.c:865
__fput+0x5ba/0xa50 fs/file_table.c:458
task_work_run+0x24f/0x310 kernel/task_work.c:239
exit_task_work include/linux/task_work.h:43 [inline]
do_exit+0xa2f/0x28e0 kernel/exit.c:938
do_group_exit+0x207/0x2c0 kernel/exit.c:1087
get_signal+0x16b2/0x1750 kernel/signal.c:3017
arch_do_signal_or_restart+0x96/0x860 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+0xce/0x340 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb856585d19
Code: Unable to access opcode bytes at 0x7fb856585cef.
RSP: 002b:00007fb8563f8fe8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: fffffffffffffff2 RBX: 00007fb856775fa0 RCX: 00007fb856585d19
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000022023400
RBP: 00007fb856601a20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fb856775fa0 R15: 00007fff490298a8
----------------
Code disassembly (best guess):
0: ff 42 0f incl 0xf(%rdx)
3: b6 04 mov $0x4,%dh
5: 2b 84 c0 75 6c 66 c7 sub -0x3899938b(%rax,%rax,8),%eax
c: 84 24 b0 test %ah,(%rax,%rsi,4)
f: 00 00 add %al,(%rax)
11: 00 00 add %al,(%rax)
13: 01 48 8b add %ecx,-0x75(%rax)
16: 44 24 40 rex.R and $0x40,%al
19: 42 0f b6 04 28 movzbl (%rax,%r13,1),%eax
1e: 84 c0 test %al,%al
20: 75 77 jne 0x99
22: 41 80 3e 00 cmpb $0x0,(%r14)
26: 74 0c je 0x34
28: f3 90 pause
* 2a: 41 ff c4 inc %r12d <-- trapping instruction
2d: 75 d2 jne 0x1
2f: e9 a0 00 00 00 jmp 0xd4
34: 4c 89 f7 mov %r14,%rdi
37: be 02 00 00 00 mov $0x2,%esi
3c: e8 .byte 0xe8
3d: e8 .byte 0xe8
3e: c9 leave
3f: 3a .byte 0x3a