==================================================================
BUG: KASAN: stack-out-of-bounds in profile_pc+0xd3/0x150 arch/x86/kernel/time.c:42
Read of size 8 at addr ffffc900042fef40 by task syz-executor374/5047
CPU: 1 PID: 5047 Comm: syz-executor374 Not tainted 6.7.0-syzkaller-09928-g052d534373b7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
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:377 [inline]
print_report+0x163/0x540 mm/kasan/report.c:488
kasan_report+0x142/0x170 mm/kasan/report.c:601
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:256 [inline]
tick_nohz_highres_handler+0x383/0x550 kernel/time/tick-sched.c:1519
__run_hrtimer kernel/time/hrtimer.c:1688 [inline]
__hrtimer_run_queues+0x562/0xd20 kernel/time/hrtimer.c:1752
hrtimer_interrupt+0x396/0x980 kernel/time/hrtimer.c:1814
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1065 [inline]
__sysvec_apic_timer_interrupt+0x104/0x3a0 arch/x86/kernel/apic/apic.c:1082
sysvec_apic_timer_interrupt+0x92/0xb0 arch/x86/kernel/apic/apic.c:1076
asm_sysvec_apic_timer_interrupt+0x1a/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+0xd8/0x140 kernel/locking/spinlock.c:194
Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 ee 2b bd f6 f6 44 24 21 02 75 4e 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 b3 a4 32 f6 65 8b 05 24 6a d5 74 85 c0 74 3f 48 c7 04 24 0e 36
RSP: 0018:ffffc900042fef40 EFLAGS: 00000206
RAX: e131c798c94ad600 RBX: 1ffff9200085fdec RCX: ffffffff8195ba6c
RDX: dffffc0000000000 RSI: ffffffff8bbe5e00 RDI: 0000000000000001
RBP: ffffc900042fefd0 R08: ffffffff8f01f26f R09: 1ffffffff1e03e4d
R10: dffffc0000000000 R11: fffffbfff1e03e4e R12: dffffc0000000000
R13: 1ffff9200085fde8 R14: ffffc900042fef60 R15: 0000000000000246
spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
rmqueue_bulk mm/page_alloc.c:2154 [inline]
__rmqueue_pcplist+0x20a5/0x2550 mm/page_alloc.c:2820
rmqueue_pcplist mm/page_alloc.c:2862 [inline]
rmqueue mm/page_alloc.c:2899 [inline]
get_page_from_freelist+0x896/0x3570 mm/page_alloc.c:3308
__alloc_pages+0x255/0x680 mm/page_alloc.c:4567
alloc_pages_mpol+0x3de/0x640 mm/mempolicy.c:2133
__get_free_pages+0xc/0x30 mm/page_alloc.c:4614
kasan_populate_vmalloc_pte+0x34/0xe0 mm/kasan/shadow.c:311
apply_to_pte_range mm/memory.c:2619 [inline]
apply_to_pmd_range mm/memory.c:2663 [inline]
apply_to_pud_range mm/memory.c:2699 [inline]
apply_to_p4d_range mm/memory.c:2735 [inline]
__apply_to_page_range+0x8e8/0xe30 mm/memory.c:2769
alloc_vmap_area+0x1ad5/0x1c10 mm/vmalloc.c:1641
__get_vm_area_node+0x16e/0x370 mm/vmalloc.c:2595
__vmalloc_node_range+0x3df/0x14a0 mm/vmalloc.c:3280
__vmalloc_node mm/vmalloc.c:3385 [inline]
vzalloc+0x79/0x90 mm/vmalloc.c:3458
profile_init+0xee/0x130 kernel/profile.c:131
profiling_store+0x5e/0xc0 kernel/ksysfs.c:104
kernfs_fop_write_iter+0x3b3/0x510 fs/kernfs/file.c:334
call_write_iter include/linux/fs.h:2085 [inline]
new_sync_write fs/read_write.c:497 [inline]
vfs_write+0x783/0xaf0 fs/read_write.c:590
ksys_write+0x1a0/0x2c0 fs/read_write.c:643
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f3c702b1329
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:00007ffe571a9a38 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007ffe571a9c08 RCX: 00007f3c702b1329
RDX: 000000000000003b RSI: 0000000020000000 RDI: 0000000000000003
RBP: 00007f3c70324610 R08: 0000000000000000 R09: 00007ffe571a9c08
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffe571a9bf8 R14: 0000000000000001 R15: 0000000000000001
The buggy address belongs to stack of task syz-executor374/5047
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
[ffffc900042f8000, ffffc90004301000) created by:
copy_process+0x5d1/0x3fb0 kernel/fork.c:2326
The buggy address belongs to the physical page:
page:ffffea00004ef9c0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x13be7
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 0x2dc2(GFP_KERNEL|__GFP_HIGHMEM|__GFP_NOWARN|__GFP_ZERO), pid 5032, tgid 5032 (sshd), ts 43444201894, free_ts 41847731523
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook+0x1e6/0x210 mm/page_alloc.c:1533
prep_new_page mm/page_alloc.c:1540 [inline]
get_page_from_freelist+0x33ea/0x3570 mm/page_alloc.c:3311
__alloc_pages+0x255/0x680 mm/page_alloc.c:4567
alloc_pages_mpol+0x3de/0x640 mm/mempolicy.c:2133
vm_area_alloc_pages mm/vmalloc.c:3063 [inline]
__vmalloc_area_node mm/vmalloc.c:3139 [inline]
__vmalloc_node_range+0x9a3/0x14a0 mm/vmalloc.c:3320
alloc_thread_stack_node kernel/fork.c:307 [inline]
dup_task_struct+0x3e5/0x7d0 kernel/fork.c:1112
copy_process+0x5d1/0x3fb0 kernel/fork.c:2326
kernel_clone+0x222/0x840 kernel/fork.c:2901
__do_sys_clone kernel/fork.c:3044 [inline]
__se_sys_clone kernel/fork.c:3028 [inline]
__x64_sys_clone+0x258/0x2a0 kernel/fork.c:3028
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
page last free pid 4974 tgid 4974 stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1140 [inline]
free_unref_page_prepare+0x959/0xa80 mm/page_alloc.c:2346
free_unref_page+0x37/0x3f0 mm/page_alloc.c:2486
pipe_buf_release include/linux/pipe_fs_i.h:219 [inline]
pipe_update_tail fs/pipe.c:234 [inline]
pipe_read+0x6ee/0x13e0 fs/pipe.c:354
call_read_iter include/linux/fs.h:2079 [inline]
new_sync_read fs/read_write.c:395 [inline]
vfs_read+0x662/0x900 fs/read_write.c:476
ksys_read+0x1a0/0x2c0 fs/read_write.c:619
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
Memory state around the buggy address:
ffffc900042fee00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffffc900042fee80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffc900042fef00: 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00 f3 f3 f3
^
ffffc900042fef80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffffc900042ff000: 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 ee 2b bd f6 call 0xf6bd2c02
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 b3 a4 32 f6 call 0xf632a4e2 <-- trapping instruction
2f: 65 8b 05 24 6a d5 74 mov %gs:0x74d56a24(%rip),%eax # 0x74d56a5a
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