==================================================================
BUG: KASAN: stack-out-of-bounds in profile_pc+0xa4/0xe0 arch/x86/kernel/time.c:42
Read of size 8 at addr ffffc90000007d80 by task syz-executor332/3486
CPU: 0 PID: 3486 Comm: syz-executor332 Not tainted 5.15.128-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
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:255 [inline]
tick_sched_timer+0x390/0x550 kernel/time/tick-sched.c:1473
__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+0x3e/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 22 aa a3 f7 f6 44 24 21 02 75 4e 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 c7 28 31 f7 65 8b 05 a8 65 dc 75 85 c0 74 3f 48 c7 04 24 0e 36
RSP: 0018:ffffc90000007d80 EFLAGS: 00000206
RAX: 0e4fa05611d82a00 RBX: 1ffff92000000fb4 RCX: ffffffff8162ea28
RDX: dffffc0000000000 RSI: ffffffff8a8b0ce0 RDI: 0000000000000001
RBP: ffffc90000007e10 R08: dffffc0000000000 R09: fffffbfff1f7b023
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 1ffff92000000fb0 R14: ffffc90000007da0 R15: 0000000000000246
__do_softirq+0x3b3/0x93a kernel/softirq.c:558
invoke_softirq kernel/softirq.c:432 [inline]
__irq_exit_rcu+0x155/0x240 kernel/softirq.c:637
irq_exit_rcu+0x5/0x20 kernel/softirq.c:649
sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1096
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:lock_acquire+0x252/0x4f0 kernel/locking/lockdep.c:5626
Code: 2b 00 74 08 4c 89 f7 e8 5c 35 67 00 f6 44 24 61 02 0f 85 84 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25
RSP: 0018:ffffc90002f3f800 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff920005e7f0c RCX: ffffffff816335f2
RDX: dffffc0000000000 RSI: ffffffff8a8b1f80 RDI: ffffffff8ad87a00
RBP: ffffc90002f3f958 R08: dffffc0000000000 R09: fffffbfff1f7b023
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff920005e7f08
R13: dffffc0000000000 R14: ffffc90002f3f860 R15: 0000000000000246
__fs_reclaim_acquire mm/page_alloc.c:4547 [inline]
fs_reclaim_acquire+0x83/0x120 mm/page_alloc.c:4561
prepare_alloc_pages+0x147/0x5b0 mm/page_alloc.c:5193
__alloc_pages+0x14f/0x700 mm/page_alloc.c:5410
vm_area_alloc_pages mm/vmalloc.c:2864 [inline]
__vmalloc_area_node mm/vmalloc.c:2920 [inline]
__vmalloc_node_range+0x5ab/0x8c0 mm/vmalloc.c:3025
__vmalloc_node mm/vmalloc.c:3075 [inline]
vzalloc+0x75/0x80 mm/vmalloc.c:3145
profile_init+0xea/0x130 kernel/profile.c:135
profiling_store+0x5a/0xc0 kernel/ksysfs.c:80
kernfs_fop_write_iter+0x3a2/0x4f0 fs/kernfs/file.c:296
call_write_iter include/linux/fs.h:2103 [inline]
new_sync_write fs/read_write.c:507 [inline]
vfs_write+0xacf/0xe50 fs/read_write.c:594
ksys_write+0x1a2/0x2c0 fs/read_write.c:647
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f23dd1e9719
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 d1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fffac066d28 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f23dd236461 RCX: 00007f23dd1e9719
RDX: 000000000000000f RSI: 0000000020000000 RDI: 0000000000000003
RBP: 00007f23dd268420 R08: 00007fffac066d92 R09: 00007fffac066d92
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000031
R13: 0000000000000003 R14: 0000000000050012 R15: 00007fffac066d92
Memory state around the buggy address:
ffffc90000007c80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffffc90000007d00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffc90000007d80: f1 f1 f1 f1 00 f3 f3 f3 00 00 00 00 00 00 00 00
^
ffffc90000007e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffffc90000007e80: 00 00 00 00 f1 f1 f1 f1 00 f3 f3 f3 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 22 aa a3 f7 call 0xf7a3aa36
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 c7 28 31 f7 call 0xf73128f6 <-- trapping instruction
2f: 65 8b 05 a8 65 dc 75 mov %gs:0x75dc65a8(%rip),%eax # 0x75dc65de
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