==================================================================
BUG: KASAN: stack-out-of-bounds in profile_pc+0xd3/0x150 arch/x86/kernel/time.c:42
Read of size 8 at addr ffffc90004ed7940 by task sed/5453
CPU: 0 PID: 5453 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:ffffc90004ed7940 EFLAGS: 00000206
RAX: 1c63e55c502c8a00 RBX: 1ffff920009daf2c RCX: ffffffff8194715c
RDX: dffffc0000000000 RSI: ffffffff8b599580 RDI: 0000000000000001
RBP: ffffc90004ed79d0 R08: ffffffff8e9a66af R09: 1ffffffff1d34cd5
R10: dffffc0000000000 R11: fffffbfff1d34cd6 R12: dffffc0000000000
R13: 1ffff920009daf28 R14: ffffc90004ed7960 R15: 0000000000000246
spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
__wake_up_common_lock kernel/sched/wait.c:140 [inline]
__wake_up_sync_key+0x125/0x1c0 kernel/sched/wait.c:213
pipe_write+0x2db/0x1be0 fs/pipe.c:596
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: 0033:0x7fe7d9ec3bf2
Code: 89 c7 48 89 44 24 08 e8 7b 34 fa ff 48 8b 44 24 08 48 83 c4 28 c3 c3 64 8b 04 25 18 00 00 00 85 c0 75 20 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 6f 48 8b 15 07 a2 0d 00 f7 d8 64 89 02 48 83
RSP: 002b:00007ffca95cb218 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fe7d9f9f5a0 RCX: 00007fe7d9ec3bf2
RDX: 0000000000000025 RSI: 000055e7e8cf8aa0 RDI: 0000000000000001
RBP: 0000000000000025 R08: 00007ffca95cb1d0 R09: 00007ffca95cb2b0
R10: 00007ffca95cb210 R11: 0000000000000246 R12: 0000000000000025
R13: 000055e7e8cf8aa0 R14: 0000000000000000 R15: 0000000000000001
The buggy address belongs to stack of task sed/5453
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
[ffffc90004ed0000, ffffc90004ed9000) created by:
copy_process+0x5c8/0x4290 kernel/fork.c:2327
The buggy address belongs to the physical page:
page:ffffea0001d4ed00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x753b4
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 4698, tgid 4698 (dhcpcd), ts 59473055185, free_ts 59066452668
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
__slab_free+0x2f6/0x390 mm/slub.c:3715
qlist_free_all+0x22/0x60 mm/kasan/quarantine.c:185
kasan_quarantine_reduce+0x14b/0x160 mm/kasan/quarantine.c:292
__kasan_slab_alloc+0x23/0x70 mm/kasan/common.c:305
kasan_slab_alloc include/linux/kasan.h:188 [inline]
slab_post_alloc_hook+0x6c/0x3b0 mm/slab.h:762
slab_alloc_node mm/slub.c:3478 [inline]
kmem_cache_alloc_node+0x148/0x330 mm/slub.c:3523
__alloc_skb+0x181/0x420 net/core/skbuff.c:640
alloc_skb include/linux/skbuff.h:1286 [inline]
alloc_skb_with_frags+0xc3/0x780 net/core/skbuff.c:6313
sock_alloc_send_pskb+0x919/0xa50 net/core/sock.c:2795
unix_dgram_sendmsg+0x659/0x2070 net/unix/af_unix.c:1953
sock_sendmsg_nosec net/socket.c:730 [inline]
sock_sendmsg net/socket.c:753 [inline]
sock_write_iter+0x39a/0x520 net/socket.c:1141
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
Memory state around the buggy address:
ffffc90004ed7800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffffc90004ed7880: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffc90004ed7900: 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00 f3 f3 f3
^
ffffc90004ed7980: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffffc90004ed7a00: f1 f1 f1 f1 00 00 00 00 00 f3 f3 f3 f3 f3 f3 f3
==================================================================
----------------
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