BUG: kernel NULL pointer dereference, address: 0000000000000003
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 26cc8067 P4D 26cc8067 PUD 123db067 PMD 0
Oops: Oops: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 2 PID: 5576 Comm: kworker/2:3 Not tainted 6.10.0-rc3-syzkaller-00044-g2ccbdf43d5e7 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Workqueue: slub_flushwq flush_cpu_slab
RIP: 0010:PagePoisoned include/linux/page-flags.h:296 [inline]
RIP: 0010:page_to_nid include/linux/mm.h:1664 [inline]
RIP: 0010:folio_nid include/linux/mm.h:1670 [inline]
RIP: 0010:slab_nid mm/slab.h:194 [inline]
RIP: 0010:deactivate_slab+0x1b/0x4a0 mm/slub.c:2881
Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 48 89 e5 41 57 41 56 49 89 f6 41 55 41 54 53 48 83 e4 f0 48 81 ec b0 00 00 00 <48> 8b 06 48 89 54 24 08 48 83 f8 ff 0f 84 c3 03 00 00 48 8b 06 48
RSP: 0018:ffffc900037cfbb0 EFLAGS: 00010282
RAX: 0000000000000002 RBX: ffffe8ffad26cbf0 RCX: 1ffffffff2841bf8
RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff888025c83680
RBP: ffffc900037cfc88 R08: 0000000000000001 R09: fffffbfff283f45e
R10: ffffffff941fa2f7 R11: ffffffff81e17f8a R12: 0000000000000200
R13: 0000000000000003 R14: 0000000000000003 R15: 0000000000000002
FS: 0000000000000000(0000) GS:ffff88802c200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000003 CR3: 0000000012898000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
flush_slab mm/slub.c:3101 [inline]
flush_cpu_slab+0x141/0x410 mm/slub.c:3147
process_one_work+0x958/0x1ad0 kernel/workqueue.c:3231
process_scheduled_works kernel/workqueue.c:3312 [inline]
worker_thread+0x6c8/0xf70 kernel/workqueue.c:3393
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
</TASK>
Modules linked in:
CR2: 0000000000000003
---[ end trace 0000000000000000 ]---
RIP: 0010:PagePoisoned include/linux/page-flags.h:296 [inline]
RIP: 0010:page_to_nid include/linux/mm.h:1664 [inline]
RIP: 0010:folio_nid include/linux/mm.h:1670 [inline]
RIP: 0010:slab_nid mm/slab.h:194 [inline]
RIP: 0010:deactivate_slab+0x1b/0x4a0 mm/slub.c:2881
Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 48 89 e5 41 57 41 56 49 89 f6 41 55 41 54 53 48 83 e4 f0 48 81 ec b0 00 00 00 <48> 8b 06 48 89 54 24 08 48 83 f8 ff 0f 84 c3 03 00 00 48 8b 06 48
RSP: 0018:ffffc900037cfbb0 EFLAGS: 00010282
RAX: 0000000000000002 RBX: ffffe8ffad26cbf0 RCX: 1ffffffff2841bf8
RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff888025c83680
RBP: ffffc900037cfc88 R08: 0000000000000001 R09: fffffbfff283f45e
R10: ffffffff941fa2f7 R11: ffffffff81e17f8a R12: 0000000000000200
R13: 0000000000000003 R14: 0000000000000003 R15: 0000000000000002
FS: 0000000000000000(0000) GS:ffff88802c200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000003 CR3: 0000000012898000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 90 nop
1: 90 nop
2: 90 nop
3: 90 nop
4: 90 nop
5: 90 nop
6: 90 nop
7: 90 nop
8: 90 nop
9: 90 nop
a: 90 nop
b: 90 nop
c: 90 nop
d: 90 nop
e: 90 nop
f: 55 push %rbp
10: 48 89 e5 mov %rsp,%rbp
13: 41 57 push %r15
15: 41 56 push %r14
17: 49 89 f6 mov %rsi,%r14
1a: 41 55 push %r13
1c: 41 54 push %r12
1e: 53 push %rbx
1f: 48 83 e4 f0 and $0xfffffffffffffff0,%rsp
23: 48 81 ec b0 00 00 00 sub $0xb0,%rsp
* 2a: 48 8b 06 mov (%rsi),%rax <-- trapping instruction
2d: 48 89 54 24 08 mov %rdx,0x8(%rsp)
32: 48 83 f8 ff cmp $0xffffffffffffffff,%rax
36: 0f 84 c3 03 00 00 je 0x3ff
3c: 48 8b 06 mov (%rsi),%rax
3f: 48 rex.W