==================================================================
BUG: KASAN: stack-out-of-bounds in profile_pc+0xd3/0x150 arch/x86/kernel/time.c:42
Read of size 8 at addr ffffc900056bf7e0 by task sed/5457
CPU: 0 PID: 5457 Comm: sed 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:ffffc900056bf7e0 EFLAGS: 00000206
RAX: 6a64ba7d18d62e00 RBX: 1ffff92000ad7f00 RCX: ffffffff8194715c
RDX: dffffc0000000000 RSI: ffffffff8b599580 RDI: 0000000000000001
RBP: ffffc900056bf870 R08: ffffffff8e9a66af R09: 1ffffffff1d34cd5
R10: dffffc0000000000 R11: fffffbfff1d34cd6 R12: dffffc0000000000
R13: 1ffff92000ad7efc R14: ffffc900056bf800 R15: 0000000000000246
__debug_check_no_obj_freed lib/debugobjects.c:1042 [inline]
debug_check_no_obj_freed+0x39e/0x420 lib/debugobjects.c:1063
slab_free_hook mm/slub.c:1775 [inline]
slab_free_freelist_hook mm/slub.c:1826 [inline]
slab_free mm/slub.c:3809 [inline]
kmem_cache_free+0x241/0x500 mm/slub.c:3831
anon_vma_free mm/rmap.c:137 [inline]
__put_anon_vma+0x128/0x2d0 mm/rmap.c:2352
put_anon_vma include/linux/rmap.h:116 [inline]
unlink_anon_vmas+0x490/0x5f0 mm/rmap.c:445
free_pgtables+0x50b/0x770 mm/memory.c:399
exit_mmap+0x4cb/0xc50 mm/mmap.c:3221
__mmput+0x115/0x3c0 kernel/fork.c:1349
exit_mm+0x21f/0x300 kernel/exit.c:567
do_exit+0x612/0x2290 kernel/exit.c:861
do_group_exit+0x206/0x2c0 kernel/exit.c:1024
__do_sys_exit_group kernel/exit.c:1035 [inline]
__se_sys_exit_group kernel/exit.c:1033 [inline]
__x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1033
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: 0033:0x7f2270d79a90
Code: Unable to access opcode bytes at 0x7f2270d79a66.
RSP: 002b:00007ffc89b4b308 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f2270e6a860 RCX: 00007f2270d79a90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000000
RBP: 00007f2270e6a860 R08: 00007ffc89b4b180 R09: 00007ffc89b4b260
R10: 00007ffc89b4b1c0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f2270e6e658 R15: 0000000000000001
The buggy address belongs to stack of task sed/5457
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
[ffffc900056b8000, ffffc900056c1000) created by:
copy_process+0x5c8/0x4290 kernel/fork.c:2327
The buggy address belongs to the physical page:
page:ffffea0001c316c0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x70c5b
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
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 0x102dc2(GFP_HIGHUSER|__GFP_NOWARN|__GFP_ZERO), pid 5451, tgid 5451 (dhcpcd-run-hook), ts 69384224547, free_ts 69374740616
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_list+0x596/0x830 mm/page_alloc.c:2451
release_pages+0x2113/0x23f0 mm/swap.c:1042
tlb_batch_pages_flush mm/mmu_gather.c:98 [inline]
tlb_flush_mmu_free mm/mmu_gather.c:293 [inline]
tlb_flush_mmu+0x34c/0x4e0 mm/mmu_gather.c:300
tlb_finish_mmu+0xd4/0x1f0 mm/mmu_gather.c:392
exit_mmap+0x4d3/0xc50 mm/mmap.c:3223
__mmput+0x115/0x3c0 kernel/fork.c:1349
exit_mm+0x21f/0x300 kernel/exit.c:567
do_exit+0x612/0x2290 kernel/exit.c:861
do_group_exit+0x206/0x2c0 kernel/exit.c:1024
__do_sys_exit_group kernel/exit.c:1035 [inline]
__se_sys_exit_group kernel/exit.c:1033 [inline]
__x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1033
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:
ffffc900056bf680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffffc900056bf700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffc900056bf780: 00 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1
^
ffffc900056bf800: 00 f3 f3 f3 00 00 00 00 00 00 00 00 00 00 00 00
ffffc900056bf880: 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