==================================================================
BUG: KASAN: stack-out-of-bounds in profile_pc+0xa4/0xe0 arch/x86/kernel/time.c:42
Read of size 8 at addr ffffc90000dffac0 by task kworker/1:1/25
CPU: 1 PID: 25 Comm: kworker/1:1 Not tainted 5.15.111-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
Workqueue: krxrpcd rxrpc_local_processor
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
print_address_description+0x63/0x3b0 mm/kasan/report.c:248
__kasan_report mm/kasan/report.c:434 [inline]
kasan_report+0x16b/0x1c0 mm/kasan/report.c:451
profile_pc+0xa4/0xe0 arch/x86/kernel/time.c:42
profile_tick+0xd4/0x130 kernel/profile.c:416
tick_sched_handle kernel/time/tick-sched.c:227 [inline]
tick_sched_timer+0x237/0x3c0 kernel/time/tick-sched.c:1430
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x55b/0xcf0 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline]
__sysvec_apic_timer_interrupt+0x139/0x470 arch/x86/kernel/apic/apic.c:1102
sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1096
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xd4/0x130 kernel/locking/spinlock.c:194
Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 42 8e a5 f7 f6 44 24 21 02 75 4e 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 f7 62 33 f7 65 8b 05 f8 be de 75 85 c0 74 3f 48 c7 04 24 0e 36
RSP: 0018:ffffc90000dffac0 EFLAGS: 00000206
RAX: d88e9f8b00fc1e00 RBX: 1ffff920001bff5c RCX: ffffffff8162c608
RDX: dffffc0000000000 RSI: ffffffff8a8afb60 RDI: 0000000000000001
RBP: ffffc90000dffb48 R08: dffffc0000000000 R09: fffffbfff1f78e3b
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 1ffff920001bff58 R14: ffffc90000dffae0 R15: 0000000000000246
spin_unlock_irqrestore include/linux/spinlock.h:418 [inline]
skb_dequeue+0x10f/0x140 net/core/skbuff.c:3252
rxrpc_purge_queue+0x2c/0x170 net/rxrpc/skbuff.c:88
rxrpc_local_destroyer net/rxrpc/local_object.c:395 [inline]
rxrpc_local_processor+0x4f8/0x5d0 net/rxrpc/local_object.c:418
process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2307
worker_thread+0xaca/0x1280 kernel/workqueue.c:2454
kthread+0x3f6/0x4f0 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
addr ffffc90000dffac0 is located in stack of task kworker/1:1/25 at offset 0 in frame:
_raw_spin_unlock_irqrestore+0x0/0x130 kernel/locking/spinlock.c:187
this frame has 1 object:
[32, 40) 'flags.i.i.i.i'
Memory state around the buggy address:
ffffc90000dff980: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffffc90000dffa00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffc90000dffa80: 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00 f3 f3 f3
^
ffffc90000dffb00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffffc90000dffb80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
----------------
Code disassembly (best guess):
0: 9c pushfq
1: 8f 44 24 20 popq 0x20(%rsp)
5: 42 80 3c 23 00 cmpb $0x0,(%rbx,%r12,1)
a: 74 08 je 0x14
c: 4c 89 f7 mov %r14,%rdi
f: e8 42 8e a5 f7 callq 0xf7a58e56
14: f6 44 24 21 02 testb $0x2,0x21(%rsp)
19: 75 4e jne 0x69
1b: 41 f7 c7 00 02 00 00 test $0x200,%r15d
22: 74 01 je 0x25
24: fb sti
25: bf 01 00 00 00 mov $0x1,%edi
* 2a: e8 f7 62 33 f7 callq 0xf7336326 <-- trapping instruction
2f: 65 8b 05 f8 be de 75 mov %gs:0x75debef8(%rip),%eax # 0x75debf2e
36: 85 c0 test %eax,%eax
38: 74 3f je 0x79
3a: 48 rex.W
3b: c7 .byte 0xc7
3c: 04 24 add $0x24,%al
3e: 0e (bad)
3f: 36 ss