==================================================================
BUG: KASAN: stack-out-of-bounds in profile_pc+0xa8/0xe0 arch/x86/kernel/time.c:42
Read of size 8 at addr ffffc90003c9eb00 by task syz-executor272/5064
CPU: 1 PID: 5064 Comm: syz-executor272 Not tainted 6.2.0-rc8-syzkaller-00134-g38f8ccde04a3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
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:306 [inline]
print_report+0x163/0x4f0 mm/kasan/report.c:417
kasan_report+0x13a/0x170 mm/kasan/report.c:517
profile_pc+0xa8/0xe0 arch/x86/kernel/time.c:42
profile_tick+0xf2/0x170 kernel/profile.c:339
tick_sched_handle kernel/time/tick-sched.c:244 [inline]
tick_sched_timer+0x394/0x550 kernel/time/tick-sched.c:1480
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x61f/0x1000 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x396/0x980 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1096 [inline]
__sysvec_apic_timer_interrupt+0x193/0x680 arch/x86/kernel/apic/apic.c:1113
sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1107
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 ce da 30 f7 f6 44 24 21 02 75 4e 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 c3 b8 ae f6 65 8b 05 04 76 53 75 85 c0 74 3f 48 c7 04 24 0e 36
RSP: 0018:ffffc90003c9eb00 EFLAGS: 00000206
RAX: 50e89451d93dea00 RBX: 1ffff92000793d64 RCX: ffffffff816b75fa
RDX: dffffc0000000000 RSI: ffffffff8aea6f40 RDI: 0000000000000001
RBP: ffffc90003c9eb90 R08: dffffc0000000000 R09: fffffbfff2038631
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 1ffff92000793d60 R14: ffffc90003c9eb20 R15: 0000000000000246
spin_unlock_irqrestore include/linux/spinlock.h:405 [inline]
rmqueue_bulk mm/page_alloc.c:3157 [inline]
__rmqueue_pcplist+0x220d/0x2510 mm/page_alloc.c:3753
rmqueue_pcplist mm/page_alloc.c:3795 [inline]
rmqueue mm/page_alloc.c:3838 [inline]
get_page_from_freelist+0x870/0x35c0 mm/page_alloc.c:4280
__alloc_pages+0x291/0x7e0 mm/page_alloc.c:5549
__get_free_pages+0xc/0x30 mm/page_alloc.c:5599
kasan_populate_vmalloc_pte+0x2e/0xd0 mm/kasan/shadow.c:271
apply_to_pte_range mm/memory.c:2596 [inline]
apply_to_pmd_range mm/memory.c:2640 [inline]
apply_to_pud_range mm/memory.c:2676 [inline]
apply_to_p4d_range mm/memory.c:2712 [inline]
__apply_to_page_range+0x9c5/0xcc0 mm/memory.c:2746
alloc_vmap_area+0x1c07/0x1d50 mm/vmalloc.c:1647
__get_vm_area_node+0x16c/0x360 mm/vmalloc.c:2515
__vmalloc_node_range+0x398/0x1370 mm/vmalloc.c:3187
__vmalloc_node mm/vmalloc.c:3292 [inline]
vzalloc+0x79/0x90 mm/vmalloc.c:3365
profile_init+0xfe/0x170 kernel/profile.c:131
profiling_store+0x5e/0xc0 kernel/ksysfs.c:96
kernfs_fop_write_iter+0x3a6/0x4f0 fs/kernfs/file.c:334
do_iter_write+0x6ea/0xc50 fs/read_write.c:861
iter_file_splice_write+0x80a/0xfa0 fs/splice.c:686
do_splice_from fs/splice.c:764 [inline]
direct_splice_actor+0xe7/0x1c0 fs/splice.c:931
splice_direct_to_actor+0x4c4/0xbd0 fs/splice.c:886
do_splice_direct+0x283/0x3d0 fs/splice.c:974
do_sendfile+0x620/0xff0 fs/read_write.c:1255
__do_sys_sendfile64 fs/read_write.c:1323 [inline]
__se_sys_sendfile64+0x17c/0x1e0 fs/read_write.c:1309
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: 0033:0x7fe637f4be79
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:00007ffe29a6b248 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fe637f4be79
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000003
RBP: 00007fe637f0fd90 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020007904 R11: 0000000000000246 R12: 00007fe637f0fe20
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
The buggy address belongs to stack of task syz-executor272/5064
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
[ffffc90003c98000, ffffc90003ca1000) created by:
copy_process+0x5c9/0x3f50 kernel/fork.c:2097
The buggy address belongs to the physical page:
page:ffffea0000abd040 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2af41
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 5011, tgid 5011 (dhcpcd-run-hook), ts 59509648475, free_ts 59508148546
prep_new_page mm/page_alloc.c:2531 [inline]
get_page_from_freelist+0x3449/0x35c0 mm/page_alloc.c:4283
__alloc_pages+0x291/0x7e0 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+0x966/0x1370 mm/vmalloc.c:3227
alloc_thread_stack_node kernel/fork.c:311 [inline]
dup_task_struct+0x3e5/0x6d0 kernel/fork.c:987
copy_process+0x5c9/0x3f50 kernel/fork.c:2097
kernel_clone+0x22d/0x990 kernel/fork.c:2681
__do_sys_clone kernel/fork.c:2822 [inline]
__se_sys_clone kernel/fork.c:2806 [inline]
__x64_sys_clone+0x235/0x280 kernel/fork.c:2806
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:1446 [inline]
free_pcp_prepare mm/page_alloc.c:1496 [inline]
free_unref_page_prepare+0xf3a/0x1040 mm/page_alloc.c:3369
free_unref_page_list+0x6b1/0x950 mm/page_alloc.c:3510
release_pages+0x219e/0x2470 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+0x100/0x210 mm/mmu_gather.c:299
tlb_finish_mmu+0xd4/0x1f0 mm/mmu_gather.c:391
exit_mmap+0x2c6/0x970 mm/mmap.c:3100
__mmput+0x115/0x3c0 kernel/fork.c:1207
exit_mm+0x227/0x310 kernel/exit.c:563
do_exit+0x588/0x2210 kernel/exit.c:854
do_group_exit+0x206/0x2c0 kernel/exit.c:1012
__do_sys_exit_group kernel/exit.c:1023 [inline]
__se_sys_exit_group kernel/exit.c:1021 [inline]
__x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1021
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:
ffffc90003c9ea00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffffc90003c9ea80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffc90003c9eb00: f1 f1 f1 f1 00 f3 f3 f3 00 00 00 00 00 00 00 00
^
ffffc90003c9eb80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffffc90003c9ec00: 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 ce da 30 f7 callq 0xf730dae2
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 c3 b8 ae f6 callq 0xf6aeb8f2 <-- trapping instruction
2f: 65 8b 05 04 76 53 75 mov %gs:0x75537604(%rip),%eax # 0x7553763a
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