==================================================================
BUG: KASAN: stack-out-of-bounds in profile_pc+0xd3/0x150 arch/x86/kernel/time.c:42
Read of size 8 at addr ffffc900051bf060 by task syz-executor.0/5451
CPU: 0 PID: 5451 Comm: syz-executor.0 Not tainted 6.6.0-rc1-syzkaller-00115-g9fdfb15a3dbf #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
print_address_description mm/kasan/report.c:364 [inline]
print_report+0x163/0x540 mm/kasan/report.c:475
kasan_report+0x175/0x1b0 mm/kasan/report.c:588
profile_pc+0xd3/0x150 arch/x86/kernel/time.c:42
profile_tick+0xd8/0x130 kernel/profile.c:339
tick_sched_handle kernel/time/tick-sched.c:255 [inline]
tick_sched_timer+0x383/0x550 kernel/time/tick-sched.c:1492
__run_hrtimer kernel/time/hrtimer.c:1688 [inline]
__hrtimer_run_queues+0x562/0xd10 kernel/time/hrtimer.c:1752
hrtimer_interrupt+0x396/0x980 kernel/time/hrtimer.c:1814
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1063 [inline]
__sysvec_apic_timer_interrupt+0x104/0x390 arch/x86/kernel/apic/apic.c:1080
sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1074
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xd8/0x140 kernel/locking/spinlock.c:194
Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 ae cf 13 f7 f6 44 24 21 02 75 4e 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 83 92 8c f6 65 8b 05 04 f6 2f 75 85 c0 74 3f 48 c7 04 24 0e 36
RSP: 0018:ffffc900051bf060 EFLAGS: 00000206
RAX: 67abf4e0a5847b00 RBX: 1ffff92000a37e10 RCX: ffffffff8194715c
RDX: dffffc0000000000 RSI: ffffffff8b599580 RDI: 0000000000000001
RBP: ffffc900051bf0f0 R08: ffffffff8e9a66af R09: 1ffffffff1d34cd5
R10: dffffc0000000000 R11: fffffbfff1d34cd6 R12: dffffc0000000000
R13: 1ffff92000a37e0c R14: ffffc900051bf080 R15: 0000000000000246
spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
rmqueue_bulk mm/page_alloc.c:2154 [inline]
__rmqueue_pcplist+0x1e51/0x2170 mm/page_alloc.c:2698
rmqueue_pcplist mm/page_alloc.c:2740 [inline]
rmqueue mm/page_alloc.c:2777 [inline]
get_page_from_freelist+0x76c/0x3360 mm/page_alloc.c:3167
__alloc_pages+0x255/0x670 mm/page_alloc.c:4426
__get_free_pages+0xc/0x30 mm/page_alloc.c:4477
kasan_populate_vmalloc_pte+0x34/0xe0 mm/kasan/shadow.c:323
apply_to_pte_range mm/memory.c:2586 [inline]
apply_to_pmd_range mm/memory.c:2630 [inline]
apply_to_pud_range mm/memory.c:2666 [inline]
apply_to_p4d_range mm/memory.c:2702 [inline]
__apply_to_page_range+0x8e2/0xdf0 mm/memory.c:2736
alloc_vmap_area+0x1acb/0x1c00 mm/vmalloc.c:1641
__get_vm_area_node+0x16e/0x370 mm/vmalloc.c:2595
__vmalloc_node_range+0x3df/0x1490 mm/vmalloc.c:3280
__vmalloc_node mm/vmalloc.c:3385 [inline]
vzalloc+0x79/0x90 mm/vmalloc.c:3458
profile_init+0xee/0x130 kernel/profile.c:131
profiling_store+0x5e/0xc0 kernel/ksysfs.c:104
kernfs_fop_write_iter+0x3a6/0x4f0 fs/kernfs/file.c:334
call_write_iter include/linux/fs.h:1985 [inline]
new_sync_write fs/read_write.c:491 [inline]
vfs_write+0x782/0xaf0 fs/read_write.c:584
ksys_write+0x1a0/0x2c0 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fd4a087cb29
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fd49fbfe0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fd4a099bf80 RCX: 00007fd4a087cb29
RDX: 0000000000000048 RSI: 0000000020002480 RDI: 0000000000000003
RBP: 00007fd4a08c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fd4a099bf80 R15: 00007ffd04ab2838
The buggy address belongs to stack of task syz-executor.0/5451
and is located at offset 0 in frame:
_raw_spin_unlock_irqrestore+0x0/0x140 kernel/locking/spinlock.c:187
This frame has 1 object:
[32, 40) 'flags.i.i.i.i'
The buggy address belongs to the virtual mapping at
[ffffc900051b8000, ffffc900051c1000) created by:
copy_process+0x5c8/0x4290 kernel/fork.c:2327
The buggy address belongs to the physical page:
page:ffffea0001a47600 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x691d8
memcg:ffff8880250d6102
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000000000 0000000000000000 dead000000000122 0000000000000000
raw: 0000000000000000 0000000000000000 00000001ffffffff ffff8880250d6102
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x102dc2(GFP_HIGHUSER|__GFP_NOWARN|__GFP_ZERO), pid 5399, tgid 5399 (dhcpcd-run-hook), ts 70247037598, free_ts 61542683400
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook+0x1e6/0x210 mm/page_alloc.c:1536
prep_new_page mm/page_alloc.c:1543 [inline]
get_page_from_freelist+0x31db/0x3360 mm/page_alloc.c:3170
__alloc_pages+0x255/0x670 mm/page_alloc.c:4426
vm_area_alloc_pages mm/vmalloc.c:3063 [inline]
__vmalloc_area_node mm/vmalloc.c:3139 [inline]
__vmalloc_node_range+0x9a3/0x1490 mm/vmalloc.c:3320
alloc_thread_stack_node kernel/fork.c:309 [inline]
dup_task_struct+0x3e5/0x7d0 kernel/fork.c:1118
copy_process+0x5c8/0x4290 kernel/fork.c:2327
kernel_clone+0x22d/0x7b0 kernel/fork.c:2909
__do_sys_clone kernel/fork.c:3052 [inline]
__se_sys_clone kernel/fork.c:3036 [inline]
__x64_sys_clone+0x258/0x2a0 kernel/fork.c:3036
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
page last free stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1136 [inline]
free_unref_page_prepare+0x8c3/0x9f0 mm/page_alloc.c:2312
free_unref_page+0x37/0x3f0 mm/page_alloc.c:2405
pipe_buf_release include/linux/pipe_fs_i.h:203 [inline]
pipe_read+0x6e6/0x1300 fs/pipe.c:324
call_read_iter include/linux/fs.h:1979 [inline]
new_sync_read fs/read_write.c:389 [inline]
vfs_read+0x795/0xb00 fs/read_write.c:470
ksys_read+0x1a0/0x2c0 fs/read_write.c:613
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
Memory state around the buggy address:
ffffc900051bef00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffffc900051bef80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffc900051bf000: 00 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1
^
ffffc900051bf080: 00 f3 f3 f3 00 00 00 00 00 00 00 00 00 00 00 00
ffffc900051bf100: 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 ae cf 13 f7 call 0xf713cfc2
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 83 92 8c f6 call 0xf68c92b2 <-- trapping instruction
2f: 65 8b 05 04 f6 2f 75 mov %gs:0x752ff604(%rip),%eax # 0x752ff63a
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