==================================================================
BUG: KASAN: slab-out-of-bounds in __hlist_del include/linux/list.h:791 [inline]
BUG: KASAN: slab-out-of-bounds in detach_timer kernel/time/timer.c:824 [inline]
BUG: KASAN: slab-out-of-bounds in expire_timers kernel/time/timer.c:1482 [inline]
BUG: KASAN: slab-out-of-bounds in __run_timers+0x7be/0xbe0 kernel/time/timer.c:1817
Write of size 8 at addr ffff8881d78431c8 by task syz-executor.2/10788
CPU: 1 PID: 10788 Comm: syz-executor.2 Not tainted 5.4.274-syzkaller-00016-gdd432c37afcd #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x1d8/0x241 lib/dump_stack.c:118
print_address_description+0x8c/0x600 mm/kasan/report.c:384
__kasan_report+0xf3/0x120 mm/kasan/report.c:516
kasan_report+0x30/0x60 mm/kasan/common.c:653
__hlist_del include/linux/list.h:791 [inline]
detach_timer kernel/time/timer.c:824 [inline]
expire_timers kernel/time/timer.c:1482 [inline]
__run_timers+0x7be/0xbe0 kernel/time/timer.c:1817
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1830
__do_softirq+0x23b/0x6b7 kernel/softirq.c:292
invoke_softirq kernel/softirq.c:373 [inline]
irq_exit+0x195/0x1c0 kernel/softirq.c:413
exiting_irq arch/x86/include/asm/apic.h:538 [inline]
smp_apic_timer_interrupt+0x11a/0x460 arch/x86/kernel/apic/apic.c:1149
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:834
RIP: 0010:number+0xef5/0x1000 lib/vsprintf.c:557
Code: 48 89 df e8 9d a5 47 fd e9 6e ff ff ff 89 d9 80 e1 07 38 c1 7c 9b 48 89 df e8 87 a5 47 fd eb 91 e8 70 c0 17 fd 4f 8d 6c 3d 04 <49> be 00 00 00 00 00 fc ff df 48 c7 44 24 60 0e 36 e0 45 48 8b 44
RSP: 0018:ffff8881eb736bc0 EFLAGS: 00000287 ORIG_RAX: ffffffffffffff13
RAX: ffffffff844c7a13 RBX: 00000000fffffff4 RCX: 0000000000040000
RDX: ffffc90003f5d000 RSI: 000000000003bc9b RDI: 000000000003bc9c
RBP: ffff8881eb736cd0 R08: ffffffff844c7966 R09: ffff8881eb736c40
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881eb736fc0
R13: ffff8881eb736f8b R14: ffff8881eb736f8a R15: 00000000fffffff3
vsnprintf+0x12bb/0x1c70 lib/vsprintf.c:2667
snprintf+0xd6/0x120 lib/vsprintf.c:2734
__func_imm_name+0xaf/0xc0 kernel/bpf/disasm.c:43
print_bpf_insn+0xb7a/0x12f0 kernel/bpf/disasm.c:211
do_check+0x2e33/0x9820 kernel/bpf/verifier.c:7881
bpf_check+0x2169/0xb340 kernel/bpf/verifier.c:9637
bpf_prog_load kernel/bpf/syscall.c:1724 [inline]
__do_sys_bpf kernel/bpf/syscall.c:2891 [inline]
__se_sys_bpf+0x8139/0xbcb0 kernel/bpf/syscall.c:2849
do_syscall_64+0xca/0x1c0 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x5c/0xc1
RIP: 0033:0x7f81dc571f69
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f81db8ec0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f81dc6a8f80 RCX: 00007f81dc571f69
RDX: 0000000000000023 RSI: 0000000020000300 RDI: 0000000000000005
RBP: 00007f81dc5cf6fe R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f81dc6a8f80 R15: 00007ffd94105898
The buggy address belongs to the page:
page:ffffea00075e1000 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 compound_mapcount: 0
flags: 0x8000000000010000(head)
raw: 8000000000010000 dead000000000100 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 2, migratetype Unmovable, gfp_mask 0x140dc0(GFP_USER|__GFP_COMP|__GFP_ZERO)
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook mm/page_alloc.c:2165 [inline]
prep_new_page+0x18f/0x370 mm/page_alloc.c:2171
get_page_from_freelist+0x2d13/0x2d90 mm/page_alloc.c:3794
__alloc_pages_nodemask+0x393/0x840 mm/page_alloc.c:4893
__alloc_pages include/linux/gfp.h:503 [inline]
__alloc_pages_node include/linux/gfp.h:516 [inline]
alloc_pages_node include/linux/gfp.h:530 [inline]
kmalloc_order mm/slab_common.c:1342 [inline]
kmalloc_order_trace+0x2a/0x100 mm/slab_common.c:1358
kmalloc_large include/linux/slab.h:485 [inline]
kmalloc include/linux/slab.h:549 [inline]
kzalloc include/linux/slab.h:690 [inline]
bpf_check+0xf6/0xb340 kernel/bpf/verifier.c:9561
bpf_prog_load kernel/bpf/syscall.c:1724 [inline]
__do_sys_bpf kernel/bpf/syscall.c:2891 [inline]
__se_sys_bpf+0x8139/0xbcb0 kernel/bpf/syscall.c:2849
do_syscall_64+0xca/0x1c0 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x5c/0xc1
page last free stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1176 [inline]
__free_pages_ok+0x847/0x950 mm/page_alloc.c:1438
free_the_page mm/page_alloc.c:4955 [inline]
__free_pages+0x91/0x140 mm/page_alloc.c:4961
bpf_check+0x8aaa/0xb340 kernel/bpf/verifier.c:9731
bpf_prog_load kernel/bpf/syscall.c:1724 [inline]
__do_sys_bpf kernel/bpf/syscall.c:2891 [inline]
__se_sys_bpf+0x8139/0xbcb0 kernel/bpf/syscall.c:2849
do_syscall_64+0xca/0x1c0 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x5c/0xc1
Memory state around the buggy address:
ffff8881d7843080: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe
ffff8881d7843100: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe
>ffff8881d7843180: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe
^
ffff8881d7843200: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe
ffff8881d7843280: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe
==================================================================
BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor instruction fetch in kernel mode
#PF: error_code(0x0010) - not-present page
PGD 1e557a067 P4D 1e557a067 PUD 1e9f82067 PMD 0
Oops: 0010 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 10788 Comm: syz-executor.2 Tainted: G B 5.4.274-syzkaller-00016-gdd432c37afcd #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:0x0
Code: Bad RIP value.
RSP: 0018:ffff8881f6f09d18 EFLAGS: 00010206
RAX: ffffffff8154d7aa RBX: 0000000000000100 RCX: ffff8881f4ccbf00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: ffff8881d78431c0
RBP: ffff8881f6f09ec8 R08: ffffffff8154d3ee R09: 0000000000000003
R10: ffffffffffffffff R11: dffffc0000000001 R12: 0000000100008f00
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8881d78431c0
FS: 00007f81db8ec6c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 00000001d2815000 CR4: 00000000003406a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
call_timer_fn+0x36/0x390 kernel/time/timer.c:1448
expire_timers kernel/time/timer.c:1493 [inline]
__run_timers+0x879/0xbe0 kernel/time/timer.c:1817
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1830
__do_softirq+0x23b/0x6b7 kernel/softirq.c:292
invoke_softirq kernel/softirq.c:373 [inline]
irq_exit+0x195/0x1c0 kernel/softirq.c:413
exiting_irq arch/x86/include/asm/apic.h:538 [inline]
smp_apic_timer_interrupt+0x11a/0x460 arch/x86/kernel/apic/apic.c:1149
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:834
RIP: 0010:number+0xef5/0x1000 lib/vsprintf.c:557
Code: 48 89 df e8 9d a5 47 fd e9 6e ff ff ff 89 d9 80 e1 07 38 c1 7c 9b 48 89 df e8 87 a5 47 fd eb 91 e8 70 c0 17 fd 4f 8d 6c 3d 04 <49> be 00 00 00 00 00 fc ff df 48 c7 44 24 60 0e 36 e0 45 48 8b 44
RSP: 0018:ffff8881eb736bc0 EFLAGS: 00000287 ORIG_RAX: ffffffffffffff13
RAX: ffffffff844c7a13 RBX: 00000000fffffff4 RCX: 0000000000040000
RDX: ffffc90003f5d000 RSI: 000000000003bc9b RDI: 000000000003bc9c
RBP: ffff8881eb736cd0 R08: ffffffff844c7966 R09: ffff8881eb736c40
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881eb736fc0
R13: ffff8881eb736f8b R14: ffff8881eb736f8a R15: 00000000fffffff3
vsnprintf+0x12bb/0x1c70 lib/vsprintf.c:2667
snprintf+0xd6/0x120 lib/vsprintf.c:2734
__func_imm_name+0xaf/0xc0 kernel/bpf/disasm.c:43
print_bpf_insn+0xb7a/0x12f0 kernel/bpf/disasm.c:211
do_check+0x2e33/0x9820 kernel/bpf/verifier.c:7881
bpf_check+0x2169/0xb340 kernel/bpf/verifier.c:9637
bpf_prog_load kernel/bpf/syscall.c:1724 [inline]
__do_sys_bpf kernel/bpf/syscall.c:2891 [inline]
__se_sys_bpf+0x8139/0xbcb0 kernel/bpf/syscall.c:2849
do_syscall_64+0xca/0x1c0 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x5c/0xc1
RIP: 0033:0x7f81dc571f69
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f81db8ec0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f81dc6a8f80 RCX: 00007f81dc571f69
RDX: 0000000000000023 RSI: 0000000020000300 RDI: 0000000000000005
RBP: 00007f81dc5cf6fe R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f81dc6a8f80 R15: 00007ffd94105898
Modules linked in:
CR2: 0000000000000000
---[ end trace c9c615bef6a9ec2c ]---
RIP: 0010:0x0
Code: Bad RIP value.
RSP: 0018:ffff8881f6f09d18 EFLAGS: 00010206
RAX: ffffffff8154d7aa RBX: 0000000000000100 RCX: ffff8881f4ccbf00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: ffff8881d78431c0
RBP: ffff8881f6f09ec8 R08: ffffffff8154d3ee R09: 0000000000000003
R10: ffffffffffffffff R11: dffffc0000000001 R12: 0000000100008f00
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8881d78431c0
FS: 00007f81db8ec6c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 00000001d2815000 CR4: 00000000003406a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
----------------
Code disassembly (best guess):
0: 48 89 df mov %rbx,%rdi
3: e8 9d a5 47 fd call 0xfd47a5a5
8: e9 6e ff ff ff jmp 0xffffff7b
d: 89 d9 mov %ebx,%ecx
f: 80 e1 07 and $0x7,%cl
12: 38 c1 cmp %al,%cl
14: 7c 9b jl 0xffffffb1
16: 48 89 df mov %rbx,%rdi
19: e8 87 a5 47 fd call 0xfd47a5a5
1e: eb 91 jmp 0xffffffb1
20: e8 70 c0 17 fd call 0xfd17c095
25: 4f 8d 6c 3d 04 lea 0x4(%r13,%r15,1),%r13
* 2a: 49 be 00 00 00 00 00 movabs $0xdffffc0000000000,%r14 <-- trapping instruction
31: fc ff df
34: 48 c7 44 24 60 0e 36 movq $0x45e0360e,0x60(%rsp)
3b: e0 45
3d: 48 rex.W
3e: 8b .byte 0x8b
3f: 44 rex.R