==================================================================
BUG: KASAN: stack-out-of-bounds in profile_pc+0xa4/0xe0 arch/x86/kernel/time.c:42
Read of size 8 at addr ffffc90002e774e0 by task syz.3.205/4366
CPU: 1 PID: 4366 Comm: syz.3.205 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:ffffc90002e774e0 EFLAGS: 00000206
RAX: 03acb7a45d5b4600 RBX: 1ffff920005ceea0 RCX: ffffffff913f0f03
RDX: dffffc0000000000 RSI: ffffffff8a8b2a00 RDI: 0000000000000001
RBP: ffffc90002e77580 R08: ffffffff8186db40 R09: ffffed1002df602a
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 1ffff920005cee9c R14: ffffc90002e77500 R15: 0000000000000246
spin_unlock_irqrestore include/linux/spinlock.h:418 [inline]
klist_next+0x27a/0x310 lib/klist.c:401
next_device drivers/base/bus.c:258 [inline]
bus_find_device+0x1a5/0x220 drivers/base/bus.c:334
bus_find_device_by_devt include/linux/device/bus.h:212 [inline]
usbdev_lookup_by_devt drivers/usb/core/devio.c:1012 [inline]
usbdev_open+0x127/0x7a0 drivers/usb/core/devio.c:1036
chrdev_open+0x54a/0x630 fs/char_dev.c:414
do_dentry_open+0x807/0xfb0 fs/open.c:826
do_open fs/namei.c:3608 [inline]
path_openat+0x2705/0x2f20 fs/namei.c:3742
do_filp_open+0x21c/0x460 fs/namei.c:3769
do_sys_openat2+0x13b/0x500 fs/open.c:1253
do_sys_open fs/open.c:1269 [inline]
__do_sys_openat fs/open.c:1285 [inline]
__se_sys_openat fs/open.c:1280 [inline]
__x64_sys_openat+0x243/0x290 fs/open.c:1280
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fbc664d85d0
Code: 48 89 44 24 20 75 93 44 89 54 24 0c e8 79 8d 02 00 44 8b 54 24 0c 89 da 48 89 ee 41 89 c0 bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 38 44 89 c7 89 44 24 0c e8 cc 8d 02 00 8b 44
RSP: 002b:00007fbc64f59b80 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000101301 RCX: 00007fbc664d85d0
RDX: 0000000000101301 RSI: 00007fbc64f59c20 RDI: 00000000ffffff9c
RBP: 00007fbc64f59c20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 000000000000000b R14: 00007fbc66667fa0 R15: 00007ffdb4a84f78
addr ffffc90002e774e0 is located in stack of task syz.3.205/4366 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:
ffffc90002e77380: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffffc90002e77400: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffc90002e77480: 00 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1
^
ffffc90002e77500: 00 f3 f3 f3 00 00 00 00 00 00 00 00 00 00 00 00
ffffc90002e77580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
----------------
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