------------[ cut here ]------------
sk->sk_forward_alloc
WARNING: net/ipv4/af_inet.c:162 at inet_sock_destruct+0x653/0x800 net/ipv4/af_inet.c:162, CPU#0: kworker/u32:2/41
Modules linked in:
CPU: 0 UID: 0 PID: 41 Comm: kworker/u32:2 Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Workqueue: iou_exit io_ring_exit_work
RIP: 0010:inet_sock_destruct+0x653/0x800 net/ipv4/af_inet.c:162
Code: 2f 4d ff e9 06 fd ff ff e8 ea 7d fd f7 90 0f 0b 90 e9 35 fe ff ff e8 dc 7d fd f7 90 0f 0b 90 e9 c5 fe ff ff e8 ce 7d fd f7 90 <0f> 0b 90 e9 04 ff ff ff e8 c0 7d fd f7 90 0f 0b 90 e9 65 fe ff ff
RSP: 0018:ffffc90000007d88 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff88805ab2d500 RCX: ffffffff8a0b31d7
RDX: ffff88801cf78000 RSI: ffffffff8a0b32d2 RDI: ffff88801cf78000
RBP: 0000000000000f70 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000f70 R11: 000000000000757b R12: ffff88805ab2d500
R13: ffff88805ab2d590 R14: ffffffff81ee353d R15: 0000000000000005
FS: 0000000000000000(0000) GS:ffff8880d636d000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000005cdac000 CR4: 0000000000352ef0
Call Trace:
__sk_destruct+0x85/0xab0 net/core/sock.c:2352
rcu_do_batch kernel/rcu/tree.c:2617 [inline]
rcu_core+0x5a2/0x10d0 kernel/rcu/tree.c:2869
handle_softirqs+0x1ea/0xa00 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0x162/0x210 kernel/softirq.c:735
irq_exit_rcu+0x9/0x30 kernel/softirq.c:752
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline]
sysvec_apic_timer_interrupt+0xa3/0xc0 arch/x86/kernel/apic/apic.c:1061
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:kasan_check_range+0x12/0x1e0 mm/kasan/generic.c:199
Code: 00 00 00 00 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 40 d6 48 85 f6 0f 84 7a 01 00 00 48 89 f8 41 54 <41> 89 d0 48 01 f0 55 53 0f 82 e6 00 00 00 eb 0f cc cc cc 48 b8 00
RSP: 0018:ffffc9000079f570 EFLAGS: 00000202
RAX: ffff888100a7bff0 RBX: ffff888100a7bff0 RCX: ffffffff8280df7a
RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffff888100a7bff0
RBP: 0000000000000333 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000001a6033e R11: 0000000000000000 R12: ffff88801cf78000
R13: 0000000001a6033e R14: 0000000000000400 R15: ffff888100a7bff8
instrument_write include/linux/instrumented.h:41 [inline]
___clear_bit include/asm-generic/bitops/instrumented-non-atomic.h:44 [inline]
__update_page_owner_free_handle.isra.0+0x1aa/0x4d0 mm/page_owner.c:288
__reset_page_owner+0x93/0x190 mm/page_owner.c:321
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1402 [inline]
free_unref_folios+0xa0d/0x16f0 mm/page_alloc.c:3004
folios_put_refs+0x571/0xa90 mm/swap.c:1008
release_pages+0x275/0x3d0 mm/swap.c:1048
io_free_region+0x23e/0x2a0 io_uring/memmap.c:102
io_rings_free io_uring/io_uring.c:2086 [inline]
io_ring_ctx_free io_uring/io_uring.c:2194 [inline]
io_ring_exit_work+0xa14/0xd40 io_uring/io_uring.c:2423
process_one_work+0xa0e/0x1980 kernel/workqueue.c:3314
process_scheduled_works kernel/workqueue.c:3397 [inline]
worker_thread+0x5ef/0xe50 kernel/workqueue.c:3478
kthread+0x370/0x450 kernel/kthread.c:436
ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
----------------
Code disassembly (best guess):
0: 00 00 add %al,(%rax)
2: 00 00 add %al,(%rax)
4: 0f 1f 40 00 nopl 0x0(%rax)
8: 90 nop
9: 90 nop
a: 90 nop
b: 90 nop
c: 90 nop
d: 90 nop
e: 90 nop
f: 90 nop
10: 90 nop
11: 90 nop
12: 90 nop
13: 90 nop
14: 90 nop
15: 90 nop
16: 90 nop
17: 90 nop
18: 0f 1f 40 d6 nopl -0x2a(%rax)
1c: 48 85 f6 test %rsi,%rsi
1f: 0f 84 7a 01 00 00 je 0x19f
25: 48 89 f8 mov %rdi,%rax
28: 41 54 push %r12
* 2a: 41 89 d0 mov %edx,%r8d <-- trapping instruction
2d: 48 01 f0 add %rsi,%rax
30: 55 push %rbp
31: 53 push %rbx
32: 0f 82 e6 00 00 00 jb 0x11e
38: eb 0f jmp 0x49
3a: cc int3
3b: cc int3
3c: cc int3
3d: 48 rex.W
3e: b8 .byte 0xb8