==================================================================
BUG: KASAN: stack-out-of-bounds in profile_pc+0xa4/0xe0 arch/x86/kernel/time.c:42
Read of size 8 at addr ffffc900035a7360 by task syz.0.138/4032
CPU: 1 PID: 4032 Comm: syz.0.138 Not tainted 5.15.161-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2d0 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:255 [inline]
tick_sched_timer+0x390/0x550 kernel/time/tick-sched.c:1473
__run_hrtimer kernel/time/hrtimer.c:1686 [inline]
__hrtimer_run_queues+0x55b/0xcf0 kernel/time/hrtimer.c:1750
hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1812
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 62 6c a2 f7 f6 44 24 21 02 75 4e 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 57 ac 2f f7 65 8b 05 d8 b2 da 75 85 c0 74 3f 48 c7 04 24 0e 36
RSP: 0018:ffffc900035a7360 EFLAGS: 00000206
RAX: 65c774c3e620ed00 RBX: 1ffff920006b4e70 RCX: ffffffff913f0f03
RDX: dffffc0000000000 RSI: ffffffff8a8b2a00 RDI: 0000000000000001
RBP: ffffc900035a73f0 R08: ffffffff8186db40 R09: ffffed100ed41a0b
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 1ffff920006b4e6c R14: ffffc900035a7380 R15: 0000000000000246
spin_unlock_irqrestore include/linux/spinlock.h:418 [inline]
unlock_page_lruvec_irqrestore include/linux/memcontrol.h:1538 [inline]
__pagevec_lru_add+0x155a/0x18d0 mm/swap.c:1055
__putback_lru_fast mm/mlock.c:246 [inline]
__munlock_pagevec mm/mlock.c:334 [inline]
munlock_vma_pages_range+0x28fd/0x3100 mm/mlock.c:475
munlock_vma_pages_all mm/internal.h:358 [inline]
unlock_range mm/mmap.c:2799 [inline]
exit_mmap+0x2d5/0x670 mm/mmap.c:3173
__mmput+0x112/0x3b0 kernel/fork.c:1126
exit_mm+0x688/0x7f0 kernel/exit.c:548
do_exit+0x626/0x2480 kernel/exit.c:859
do_group_exit+0x144/0x310 kernel/exit.c:994
get_signal+0xc66/0x14e0 kernel/signal.c:2889
arch_do_signal_or_restart+0xc3/0x1890 arch/x86/kernel/signal.c:867
handle_signal_work kernel/entry/common.c:154 [inline]
exit_to_user_mode_loop+0x97/0x130 kernel/entry/common.c:178
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:214
__syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
syscall_exit_to_user_mode+0x5d/0x240 kernel/entry/common.c:307
do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f2f1ef4fb99
Code: Unable to access opcode bytes at RIP 0x7f2f1ef4fb6f.
RSP: 002b:00007f2f1d9d0048 EFLAGS: 00000246 ORIG_RAX: 0000000000000097
RAX: 0000000000000000 RBX: 00007f2f1f0ddfa0 RCX: 00007f2f1ef4fb99
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: 00007f2f1efd077e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f2f1f0ddfa0 R15: 00007ffc174593c8
addr ffffc900035a7360 is located in stack of task syz.0.138/4032 at offset 0 in frame:
_raw_spin_unlock_irqrestore+0x0/0x130
this frame has 1 object:
[32, 40) 'flags.i.i.i.i'
Memory state around the buggy address:
ffffc900035a7200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffffc900035a7280: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffc900035a7300: 00 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1
^
ffffc900035a7380: 00 f3 f3 f3 00 00 00 00 00 00 00 00 00 00 00 00
ffffc900035a7400: 00 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1
==================================================================
----------------
Code disassembly (best guess):
0: 9c pushf
1: 8f 44 24 20 pop 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 62 6c a2 f7 call 0xf7a26c76
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 57 ac 2f f7 call 0xf72fac86 <-- trapping instruction
2f: 65 8b 05 d8 b2 da 75 mov %gs:0x75dab2d8(%rip),%eax # 0x75dab30e
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