==================================================================
BUG: KASAN: stack-out-of-bounds in profile_pc+0xa4/0xe0 arch/x86/kernel/time.c:42
Read of size 8 at addr ffffc90003cff140 by task syz-executor386/5057
CPU: 0 PID: 5057 Comm: syz-executor386 Not tainted 6.1.0-syzkaller-14594-g72a85e2b0a1e #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+0x1e3/0x2d0 lib/dump_stack.c:106
print_address_description+0x74/0x340 mm/kasan/report.c:306
print_report+0x107/0x220 mm/kasan/report.c:417
kasan_report+0x139/0x170 mm/kasan/report.c:517
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+0xd4/0x130 kernel/locking/spinlock.c:194
Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 c2 6f 15 f7 f6 44 24 21 02 75 4e 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 87 4b 91 f6 65 8b 05 98 8d 34 75 85 c0 74 3f 48 c7 04 24 0e 36
RSP: 0018:ffffc90003cff140 EFLAGS: 00000206
RAX: e994e8c75b936a00 RBX: 1ffff9200079fe2c RCX: ffffffff816cfaea
RDX: dffffc0000000000 RSI: ffffffff8b0d9860 RDI: 0000000000000001
RBP: ffffc90003cff1d0 R08: dffffc0000000000 R09: fffffbfff212e031
R10: fffffbfff212e031 R11: 1ffffffff212e030 R12: dffffc0000000000
R13: 1ffff9200079fe28 R14: ffffc90003cff160 R15: 0000000000000246
spin_unlock_irqrestore include/linux/spinlock.h:405 [inline]
rmqueue_bulk mm/page_alloc.c:3157 [inline]
__rmqueue_pcplist+0x1a7b/0x1d00 mm/page_alloc.c:3753
rmqueue_pcplist+0x12d/0x330 mm/page_alloc.c:3795
rmqueue+0x1c31/0x1f80 mm/page_alloc.c:3838
get_page_from_freelist+0x497/0x7a0 mm/page_alloc.c:4280
__alloc_pages+0x259/0x560 mm/page_alloc.c:5549
__get_free_pages+0x8/0x30 mm/page_alloc.c:5599
kasan_populate_vmalloc_pte+0x2a/0xd0 mm/kasan/shadow.c:271
apply_to_pte_range mm/memory.c:2600 [inline]
apply_to_pmd_range mm/memory.c:2644 [inline]
apply_to_pud_range mm/memory.c:2680 [inline]
apply_to_p4d_range mm/memory.c:2716 [inline]
__apply_to_page_range+0x964/0xc70 mm/memory.c:2750
alloc_vmap_area+0x18f7/0x1a40 mm/vmalloc.c:1647
__get_vm_area_node+0x18a/0x380 mm/vmalloc.c:2515
__vmalloc_node_range+0x3a6/0x1400 mm/vmalloc.c:3187
__vmalloc_node mm/vmalloc.c:3292 [inline]
vzalloc+0x75/0x80 mm/vmalloc.c:3365
profile_init+0xf9/0x160 kernel/profile.c:131
profiling_store+0x59/0xc0 kernel/ksysfs.c:96
kernfs_fop_write_iter+0x3ac/0x500 fs/kernfs/file.c:334
call_write_iter include/linux/fs.h:2186 [inline]
new_sync_write fs/read_write.c:491 [inline]
vfs_write+0x7b5/0xbb0 fs/read_write.c:584
ksys_write+0x19b/0x2c0 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fe848ad2b39
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:00007ffcba93f4e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fe848ad2b39
RDX: 0000000000000018 RSI: 0000000020000000 RDI: 0000000000000003
RBP: 00007fe848a96ce0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe848a96d70
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
The buggy address belongs to stack of task syz-executor386/5057
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
[ffffc90003cf8000, ffffc90003d01000) created by:
dup_task_struct+0x8b/0x490 kernel/fork.c:987
The buggy address belongs to the physical page:
page:ffffea0000a8f700 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2a3dc
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 5027, tgid 5027 (dhcpcd-run-hook), ts 47053498451, free_ts 46653888760
prep_new_page mm/page_alloc.c:2531 [inline]
get_page_from_freelist+0x72b/0x7a0 mm/page_alloc.c:4283
__alloc_pages+0x259/0x560 mm/page_alloc.c:5549
vm_area_alloc_pages mm/vmalloc.c:2989 [inline]
__vmalloc_area_node mm/vmalloc.c:3057 [inline]
__vmalloc_node_range+0x9b2/0x1400 mm/vmalloc.c:3227
alloc_thread_stack_node+0x307/0x500 kernel/fork.c:311
dup_task_struct+0x8b/0x490 kernel/fork.c:987
copy_process+0x53c/0x3ec0 kernel/fork.c:2097
kernel_clone+0x227/0x640 kernel/fork.c:2681
__do_sys_clone kernel/fork.c:2822 [inline]
__se_sys_clone kernel/fork.c:2806 [inline]
__x64_sys_clone+0x276/0x2e0 kernel/fork.c:2806
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x2b/0x70 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:1446 [inline]
free_pcp_prepare+0x751/0x780 mm/page_alloc.c:1496
free_unref_page_prepare mm/page_alloc.c:3369 [inline]
free_unref_page_list+0xb2/0x830 mm/page_alloc.c:3510
release_pages+0x234e/0x25f0 mm/swap.c:1076
tlb_batch_pages_flush mm/mmu_gather.c:97 [inline]
tlb_flush_mmu_free mm/mmu_gather.c:292 [inline]
tlb_flush_mmu+0x860/0xa80 mm/mmu_gather.c:299
tlb_finish_mmu+0xcd/0x200 mm/mmu_gather.c:391
exit_mmap+0x2b1/0x670 mm/mmap.c:3096
__mmput+0x114/0x3b0 kernel/fork.c:1207
exec_mmap+0x4cf/0x550 fs/exec.c:1033
begin_new_exec+0x772/0xfb0 fs/exec.c:1292
load_elf_binary+0x8fc/0x2840 fs/binfmt_elf.c:996
search_binary_handler fs/exec.c:1735 [inline]
exec_binprm fs/exec.c:1777 [inline]
bprm_execve+0x8dc/0x1590 fs/exec.c:1851
do_execveat_common+0x598/0x750 fs/exec.c:1956
do_execve fs/exec.c:2030 [inline]
__do_sys_execve fs/exec.c:2106 [inline]
__se_sys_execve fs/exec.c:2101 [inline]
__x64_sys_execve+0x8e/0xa0 fs/exec.c:2101
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
Memory state around the buggy address:
ffffc90003cff000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffffc90003cff080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffc90003cff100: 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00 f3 f3 f3
^
ffffc90003cff180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffffc90003cff200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
----------------
Code disassembly (best guess):
0: 9c pushfq
1: 8f 44 24 20 popq 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 c2 6f 15 f7 callq 0xf7156fd6
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 87 4b 91 f6 callq 0xf6914bb6 <-- trapping instruction
2f: 65 8b 05 98 8d 34 75 mov %gs:0x75348d98(%rip),%eax # 0x75348dce
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