==================================================================
BUG: KASAN: stack-out-of-bounds in profile_pc+0xa4/0xe0 arch/x86/kernel/time.c:42
Read of size 8 at addr ffffc9000377ef20 by task syz-executor201/3614
CPU: 0 PID: 3614 Comm: syz-executor201 Not tainted 6.0.0-rc7-syzkaller-00220-gffb4d94b4314 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
print_address_description+0x65/0x4b0 mm/kasan/report.c:317
print_report+0x108/0x220 mm/kasan/report.c:433
kasan_report+0xfb/0x130 mm/kasan/report.c:495
profile_pc+0xa4/0xe0 arch/x86/kernel/time.c:42
profile_tick+0xcd/0x120 kernel/profile.c:343
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:1095 [inline]
__sysvec_apic_timer_interrupt+0xf9/0x280 arch/x86/kernel/apic/apic.c:1112
sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1106
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 42 96 9a f7 f6 44 24 21 02 75 4e 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 07 be 1a f7 65 8b 05 a8 b9 bf 75 85 c0 74 3f 48 c7 04 24 0e 36
RSP: 0018:ffffc9000377ef20 EFLAGS: 00000206
RAX: bd0877f2c2922600 RBX: 1ffff920006efde8 RCX: ffffffff8169b33a
RDX: dffffc0000000000 RSI: ffffffff8aad7740 RDI: 0000000000000001
RBP: ffffc9000377efb0 R08: dffffc0000000000 R09: fffffbfff1ff4622
R10: fffffbfff1ff4622 R11: 1ffffffff1ff4621 R12: dffffc0000000000
R13: 1ffff920006efde4 R14: ffffc9000377ef40 R15: 0000000000000246
spin_unlock_irqrestore include/linux/spinlock.h:404 [inline]
rmqueue_pcplist+0x1ee/0x500 mm/page_alloc.c:3808
rmqueue+0x1c11/0x1f60 mm/page_alloc.c:3841
get_page_from_freelist+0x497/0x7a0 mm/page_alloc.c:4280
__alloc_pages+0x259/0x560 mm/page_alloc.c:5549
vm_area_alloc_pages mm/vmalloc.c:2958 [inline]
__vmalloc_area_node mm/vmalloc.c:3026 [inline]
__vmalloc_node_range+0x8f4/0x1290 mm/vmalloc.c:3196
__vmalloc_node mm/vmalloc.c:3261 [inline]
vzalloc+0x75/0x80 mm/vmalloc.c:3334
profile_init+0xea/0x130 kernel/profile.c:135
profiling_store+0x59/0xc0 kernel/ksysfs.c:79
kernfs_fop_write_iter+0x3ac/0x500 fs/kernfs/file.c:354
do_iter_write+0x6f0/0xc50 fs/read_write.c:861
iter_file_splice_write+0x830/0xff0 fs/splice.c:686
do_splice_from fs/splice.c:764 [inline]
direct_splice_actor+0xe6/0x1c0 fs/splice.c:931
splice_direct_to_actor+0x4e4/0xc00 fs/splice.c:886
do_splice_direct+0x2a0/0x3f0 fs/splice.c:974
generic_copy_file_range fs/read_write.c:1391 [inline]
vfs_copy_file_range+0x9f5/0x1380 fs/read_write.c:1532
__do_sys_copy_file_range fs/read_write.c:1585 [inline]
__se_sys_copy_file_range+0x34c/0x5e0 fs/read_write.c:1552
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: 0033:0x7f3c122bab29
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:00007ffe112dcef8 EFLAGS: 00000246 ORIG_RAX: 0000000000000146
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f3c122bab29
RDX: 0000000000000003 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007f3c1227ecd0 R08: 0000000000000008 R09: 0000000000000000
R10: 0000000020000040 R11: 0000000000000246 R12: 00007f3c1227ed60
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
The buggy address belongs to stack of task syz-executor201/3614
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
[ffffc90003778000, ffffc90003781000) created by:
dup_task_struct+0x8b/0x490 kernel/fork.c:977
The buggy address belongs to the physical page:
page:ffffea0001d68380 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x75a0e
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 3611, tgid 3611 (strace-static-x), ts 46943162358, free_ts 46940076066
prep_new_page mm/page_alloc.c:2532 [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:2958 [inline]
__vmalloc_area_node mm/vmalloc.c:3026 [inline]
__vmalloc_node_range+0x8f4/0x1290 mm/vmalloc.c:3196
alloc_thread_stack_node+0x307/0x500 kernel/fork.c:312
dup_task_struct+0x8b/0x490 kernel/fork.c:977
copy_process+0x637/0x3f60 kernel/fork.c:2085
kernel_clone+0x22f/0x7a0 kernel/fork.c:2671
__do_sys_clone kernel/fork.c:2805 [inline]
__se_sys_clone kernel/fork.c:2789 [inline]
__x64_sys_clone+0x276/0x2e0 kernel/fork.c:2789
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:1449 [inline]
free_pcp_prepare+0x812/0x900 mm/page_alloc.c:1499
free_unref_page_prepare mm/page_alloc.c:3380 [inline]
free_unref_page_list+0xb4/0x7b0 mm/page_alloc.c:3522
release_pages+0x22c3/0x2540 mm/swap.c:1012
tlb_batch_pages_flush mm/mmu_gather.c:58 [inline]
tlb_flush_mmu_free mm/mmu_gather.c:255 [inline]
tlb_flush_mmu+0x850/0xa70 mm/mmu_gather.c:262
tlb_finish_mmu+0xcb/0x200 mm/mmu_gather.c:353
exit_mmap+0x1dc/0x530 mm/mmap.c:3118
__mmput+0x111/0x3a0 kernel/fork.c:1187
exec_mmap+0x589/0x610 fs/exec.c:1034
begin_new_exec+0x762/0xf80 fs/exec.c:1293
load_elf_binary+0x926/0x27d0 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+0x59b/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+0x2b/0x70 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
Memory state around the buggy address:
ffffc9000377ee00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffffc9000377ee80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffc9000377ef00: 00 00 00 00 f1 f1 f1 f1 00 f3 f3 f3 00 00 00 00
^
ffffc9000377ef80: 00 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1
ffffc9000377f000: 00 f2 f2 f2 00 f3 f3 f3 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 42 96 9a f7 callq 0xf79a9656
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 07 be 1a f7 callq 0xf71abe36 <-- trapping instruction
2f: 65 8b 05 a8 b9 bf 75 mov %gs:0x75bfb9a8(%rip),%eax # 0x75bfb9de
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