==================================================================
BUG: KASAN: stack-out-of-bounds in profile_pc+0xa4/0xe0 arch/x86/kernel/time.c:42
Read of size 8 at addr ffffc90003d2f580 by task syz-executor253/3634
CPU: 0 PID: 3634 Comm: syz-executor253 Not tainted 6.1.0-rc6-syzkaller-00308-g644e9524388a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106
print_address_description+0x74/0x340 mm/kasan/report.c:284
print_report+0x107/0x1f0 mm/kasan/report.c:395
kasan_report+0xcd/0x100 mm/kasan/report.c:495
profile_pc+0xa4/0xe0 arch/x86/kernel/time.c:42
profile_tick+0xe5/0x160 kernel/profile.c:339
tick_sched_handle kernel/time/tick-sched.c:244 [inline]
tick_sched_timer+0x381/0x540 kernel/time/tick-sched.c:1480
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x4cb/0xa60 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x3a6/0xfd0 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1096 [inline]
__sysvec_apic_timer_interrupt+0xf9/0x280 arch/x86/kernel/apic/apic.c:1113
sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1107
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+0xbc/0x120 kernel/locking/spinlock.c:194
Code: f0 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 f7 e8 0a 09 43 f7 f6 44 24 21 02 75 4e 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 3f 8b c2 f6 65 8b 05 a0 c7 66 75 85 c0 74 3f 48 c7 04 24 0e 36
RSP: 0018:ffffc90003d2f580 EFLAGS: 00000206
RAX: 1ffff920007a5eb4 RBX: ffff8880b9840540 RCX: ffffffff816ab07a
RDX: dffffc0000000000 RSI: ffffffff8aedb2a0 RDI: 0000000000000001
RBP: ffffc90003d2f610 R08: dffffc0000000000 R09: fffffbfff20b2e41
R10: fffffbfff20b2e41 R11: 1ffffffff20b2e40 R12: dffffc0000000000
R13: 1ffff920007a5eb0 R14: ffffc90003d2f5a0 R15: 0000000000000282
spin_unlock_irqrestore include/linux/spinlock.h:405 [inline]
rmqueue_pcplist+0x1d5/0x4c0 mm/page_alloc.c:3804
rmqueue+0x1b81/0x1ed0 mm/page_alloc.c:3846
get_page_from_freelist+0x4b6/0x7c0 mm/page_alloc.c:4288
__alloc_pages+0x259/0x560 mm/page_alloc.c:5558
vm_area_alloc_pages mm/vmalloc.c:2975 [inline]
__vmalloc_area_node mm/vmalloc.c:3043 [inline]
__vmalloc_node_range+0x8f4/0x1290 mm/vmalloc.c:3213
__vmalloc_node mm/vmalloc.c:3278 [inline]
vzalloc+0x75/0x80 mm/vmalloc.c:3351
profile_init+0x113/0x190 kernel/profile.c:131
profiling_store+0x59/0xc0 kernel/ksysfs.c:79
kernfs_fop_write_iter+0x3ac/0x500 fs/kernfs/file.c:330
call_write_iter include/linux/fs.h:2191 [inline]
new_sync_write fs/read_write.c:491 [inline]
vfs_write+0x7dc/0xc50 fs/read_write.c:584
ksys_write+0x177/0x2a0 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: 0033:0x7fa205f19da9
Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 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 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffcb64cda78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa205f19da9
RDX: 0000000000000012 RSI: 00000000200001c0 RDI: 0000000000000003
RBP: 00007fa205eddcc0 R08: 0000000000000012 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa205eddd50
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
The buggy address belongs to stack of task syz-executor253/3634
and is located at offset 0 in frame:
_raw_spin_unlock_irqrestore+0x0/0x120 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
[ffffc90003d28000, ffffc90003d31000) created by:
dup_task_struct+0x8b/0x490 kernel/fork.c:974
The buggy address belongs to the physical page:
page:ffffea00008a0e40 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x22839
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 3631, tgid 3631 (strace-static-x), ts 50594282378, free_ts 50590423552
prep_new_page mm/page_alloc.c:2539 [inline]
get_page_from_freelist+0x742/0x7c0 mm/page_alloc.c:4291
__alloc_pages+0x259/0x560 mm/page_alloc.c:5558
vm_area_alloc_pages mm/vmalloc.c:2975 [inline]
__vmalloc_area_node mm/vmalloc.c:3043 [inline]
__vmalloc_node_range+0x8f4/0x1290 mm/vmalloc.c:3213
alloc_thread_stack_node+0x307/0x500 kernel/fork.c:311
dup_task_struct+0x8b/0x490 kernel/fork.c:974
copy_process+0x637/0x4000 kernel/fork.c:2084
kernel_clone+0x21b/0x620 kernel/fork.c:2671
__do_sys_clone kernel/fork.c:2812 [inline]
__se_sys_clone kernel/fork.c:2796 [inline]
__x64_sys_clone+0x228/0x290 kernel/fork.c:2796
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:1459 [inline]
free_pcp_prepare+0x80c/0x8f0 mm/page_alloc.c:1509
free_unref_page_prepare mm/page_alloc.c:3387 [inline]
free_unref_page_list+0xb4/0x7b0 mm/page_alloc.c:3529
release_pages+0x232a/0x25c0 mm/swap.c:1055
tlb_batch_pages_flush mm/mmu_gather.c:59 [inline]
tlb_flush_mmu_free mm/mmu_gather.c:256 [inline]
tlb_flush_mmu+0x850/0xa70 mm/mmu_gather.c:263
tlb_finish_mmu+0xcb/0x200 mm/mmu_gather.c:363
exit_mmap+0x275/0x630 mm/mmap.c:3105
__mmput+0x114/0x3b0 kernel/fork.c:1185
exec_mmap+0x506/0x590 fs/exec.c:1035
begin_new_exec+0x7a1/0xfc0 fs/exec.c:1294
load_elf_binary+0x912/0x2850 fs/binfmt_elf.c:1002
search_binary_handler fs/exec.c:1727 [inline]
exec_binprm fs/exec.c:1768 [inline]
bprm_execve+0x8dc/0x1590 fs/exec.c:1837
do_execveat_common+0x598/0x750 fs/exec.c:1942
do_execve fs/exec.c:2016 [inline]
__do_sys_execve fs/exec.c:2092 [inline]
__se_sys_execve fs/exec.c:2087 [inline]
__x64_sys_execve+0x8e/0xa0 fs/exec.c:2087
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:
ffffc90003d2f480: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffffc90003d2f500: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffc90003d2f580: f1 f1 f1 f1 00 f3 f3 f3 00 00 00 00 00 00 00 00
^
ffffc90003d2f600: 00 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1
ffffc90003d2f680: 00 f2 f2 f2 00 f3 f3 f3 00 00 00 00 00 00 00 00
==================================================================
----------------
Code disassembly (best guess):
0: f0 48 c1 e8 03 lock shr $0x3,%rax
5: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1)
a: 74 08 je 0x14
c: 4c 89 f7 mov %r14,%rdi
f: e8 0a 09 43 f7 callq 0xf743091e
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 3f 8b c2 f6 callq 0xf6c28b6e <-- trapping instruction
2f: 65 8b 05 a0 c7 66 75 mov %gs:0x7566c7a0(%rip),%eax # 0x7566c7d6
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