==================================================================
BUG: KASAN: stack-out-of-bounds in profile_pc+0xa4/0xe0 arch/x86/kernel/time.c:42
Read of size 8 at addr ffffc90003a8f2a0 by task syz-executor163/3507
CPU: 0 PID: 3507 Comm: syz-executor163 Not tainted 6.1.49-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 mm/kasan/report.c:284 [inline]
print_report+0x15f/0x4f0 mm/kasan/report.c:395
kasan_report+0x136/0x160 mm/kasan/report.c:495
profile_pc+0xa4/0xe0 arch/x86/kernel/time.c:42
profile_tick+0xee/0x170 kernel/profile.c:339
tick_sched_handle kernel/time/tick-sched.c:255 [inline]
tick_sched_timer+0x390/0x550 kernel/time/tick-sched.c:1501
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x5a7/0xe50 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline]
__sysvec_apic_timer_interrupt+0x156/0x580 arch/x86/kernel/apic/apic.c:1112
sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [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 b2 a3 51 f7 f6 44 24 21 02 75 4e 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 e7 13 cf f6 65 8b 05 a8 7e 73 75 85 c0 74 3f 48 c7 04 24 0e 36
RSP: 0018:ffffc90003a8f2a0 EFLAGS: 00000206
RAX: 3f125dcb6743d400 RBX: 1ffff92000751e58 RCX: ffffffff816a5a2a
RDX: dffffc0000000000 RSI: ffffffff8aebe2a0 RDI: 0000000000000001
RBP: ffffc90003a8f330 R08: dffffc0000000000 R09: fffffbfff209345e
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 1ffff92000751e54 R14: ffffc90003a8f2c0 R15: 0000000000000246
spin_unlock_irqrestore include/linux/spinlock.h:405 [inline]
rmqueue_pcplist mm/page_alloc.c:3805 [inline]
rmqueue mm/page_alloc.c:3847 [inline]
get_page_from_freelist+0x8db/0x3480 mm/page_alloc.c:4289
__alloc_pages+0x28d/0x770 mm/page_alloc.c:5559
__get_free_pages+0x8/0x30 mm/page_alloc.c:5609
kasan_populate_vmalloc_pte+0x35/0xf0 mm/kasan/shadow.c:271
apply_to_pte_range mm/memory.c:2635 [inline]
apply_to_pmd_range mm/memory.c:2679 [inline]
apply_to_pud_range mm/memory.c:2715 [inline]
apply_to_p4d_range mm/memory.c:2751 [inline]
__apply_to_page_range+0x9c5/0xcc0 mm/memory.c:2785
alloc_vmap_area+0x1977/0x1ac0 mm/vmalloc.c:1646
__get_vm_area_node+0x16c/0x360 mm/vmalloc.c:2505
__vmalloc_node_range+0x394/0x1460 mm/vmalloc.c:3179
__vmalloc_node mm/vmalloc.c:3284 [inline]
vzalloc+0x75/0x80 mm/vmalloc.c:3357
profile_init+0xfa/0x160 kernel/profile.c:131
profiling_store+0x5a/0xc0 kernel/ksysfs.c:79
kernfs_fop_write_iter+0x3a2/0x4f0 fs/kernfs/file.c:330
call_write_iter include/linux/fs.h:2205 [inline]
new_sync_write fs/read_write.c:491 [inline]
vfs_write+0x7ae/0xba0 fs/read_write.c:584
ksys_write+0x19c/0x2c0 fs/read_write.c:637
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+0x63/0xcd
RIP: 0033:0x7fb1259e32e9
Code: 48 83 c4 28 c3 e8 37 17 00 00 0f 1f 80 00 00 00 00 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:00007ffd800052b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007ffd80005488 RCX: 00007fb1259e32e9
RDX: 000000000000000f RSI: 0000000020000000 RDI: 0000000000000003
RBP: 00007fb125a56610 R08: 0000000000000000 R09: 00007ffd80005488
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffd80005478 R14: 0000000000000001 R15: 0000000000000001
The buggy address belongs to stack of task syz-executor163/3507
and is located 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'
The buggy address belongs to the virtual mapping at
[ffffc90003a88000, ffffc90003a91000) created by:
copy_process+0x637/0x4020 kernel/fork.c:2090
The buggy address belongs to the physical page:
page:ffffea00009cc940 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x27325
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 0000000000000000 dead000000000122 0000000000000000
raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2dc2(GFP_KERNEL|__GFP_HIGHMEM|__GFP_NOWARN|__GFP_ZERO), pid 3505, tgid 3505 (sshd), ts 50528125770, free_ts 44804448013
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook+0x18d/0x1b0 mm/page_alloc.c:2533
prep_new_page mm/page_alloc.c:2540 [inline]
get_page_from_freelist+0x32ed/0x3480 mm/page_alloc.c:4292
__alloc_pages+0x28d/0x770 mm/page_alloc.c:5559
vm_area_alloc_pages mm/vmalloc.c:2979 [inline]
__vmalloc_area_node mm/vmalloc.c:3047 [inline]
__vmalloc_node_range+0x96c/0x1460 mm/vmalloc.c:3219
alloc_thread_stack_node kernel/fork.c:311 [inline]
dup_task_struct+0x3e5/0x6d0 kernel/fork.c:980
copy_process+0x637/0x4020 kernel/fork.c:2090
kernel_clone+0x222/0x920 kernel/fork.c:2674
__do_sys_clone kernel/fork.c:2815 [inline]
__se_sys_clone kernel/fork.c:2799 [inline]
__x64_sys_clone+0x231/0x280 kernel/fork.c:2799
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+0x63/0xcd
page last free stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1460 [inline]
free_pcp_prepare mm/page_alloc.c:1510 [inline]
free_unref_page_prepare+0xf63/0x1120 mm/page_alloc.c:3388
free_unref_page+0x98/0x570 mm/page_alloc.c:3484
pipe_buf_release include/linux/pipe_fs_i.h:183 [inline]
pipe_read+0x6e1/0x12a0 fs/pipe.c:324
call_read_iter include/linux/fs.h:2199 [inline]
new_sync_read fs/read_write.c:389 [inline]
vfs_read+0x7de/0xbe0 fs/read_write.c:470
ksys_read+0x19c/0x2c0 fs/read_write.c:613
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+0x63/0xcd
Memory state around the buggy address:
ffffc90003a8f180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffffc90003a8f200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffc90003a8f280: 00 00 00 00 f1 f1 f1 f1 00 f3 f3 f3 00 00 00 00
^
ffffc90003a8f300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffffc90003a8f380: 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 b2 a3 51 f7 call 0xf751a3c6
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 e7 13 cf f6 call 0xf6cf1416 <-- trapping instruction
2f: 65 8b 05 a8 7e 73 75 mov %gs:0x75737ea8(%rip),%eax # 0x75737ede
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