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WARNING: CPU: 1 PID: 4809 at net/ipv4/af_inet.c:157 inet_sock_destruct+0x63b/0x730 net/ipv4/af_inet.c:157
Modules linked in:
CPU: 1 PID: 4809 Comm: kworker/u4:11 Not tainted 5.15.189-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Workqueue: netns cleanup_net
RIP: 0010:inet_sock_destruct+0x63b/0x730 net/ipv4/af_inet.c:157
Code: 01 e8 e9 e7 11 f9 0f 0b e9 64 fe ff ff e8 dd e7 11 f9 0f 0b e9 99 fe ff ff e8 d1 e7 11 f9 0f 0b e9 c1 fe ff ff e8 c5 e7 11 f9 <0f> 0b e9 e9 fe ff ff 44 89 f1 80 e1 07 fe c1 38 c1 0f 8c 5b fd ff
RSP: 0018:ffffc90000dd0b48 EFLAGS: 00010246
RAX: ffffffff8865dc5b RBX: dffffc0000000000 RCX: ffff88802b999dc0
RDX: 0000000000000100 RSI: 0000000000000fff RDI: 0000000000000000
RBP: 0000000000000fff R08: dffffc0000000000 R09: ffffed100f616b78
R10: ffffed100f616b78 R11: 1ffff1100f616b77 R12: ffff88807b0b5940
R13: ffff88807b0b5940 R14: ffff88807b0b5b60 R15: 1ffff1100f616b2a
FS: 0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f48c331f368 CR3: 000000005a397000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__sk_destruct+0x50/0x820 net/core/sock.c:1956
rcu_do_batch kernel/rcu/tree.c:2523 [inline]
rcu_core+0x962/0x15d0 kernel/rcu/tree.c:2763
handle_softirqs+0x328/0x820 kernel/softirq.c:576
__do_softirq kernel/softirq.c:610 [inline]
invoke_softirq kernel/softirq.c:450 [inline]
__irq_exit_rcu+0x12f/0x220 kernel/softirq.c:659
irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:lock_is_held_type+0x13a/0x190 kernel/locking/lockdep.c:5671
Code: 75 40 48 c7 04 24 00 00 00 00 9c 8f 04 24 f7 04 24 00 02 00 00 75 46 41 f7 c5 00 02 00 00 74 01 fb 65 48 8b 04 25 28 00 00 00 <48> 3b 44 24 08 75 3c 89 e8 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f
RSP: 0018:ffffc900036a75d8 EFLAGS: 00000206
RAX: 8942ef341da49700 RBX: ffff88802b999dc0 RCX: 8942ef341da49700
RDX: 0000000000000000 RSI: ffffffff8a0b2860 RDI: ffffffff8a599340
RBP: 0000000000000000 R08: dffffc0000000000 R09: fffffbfff18499c9
R10: fffffbfff18499c9 R11: 1ffffffff18499c8 R12: 0000000000000004
R13: 0000000000000246 R14: ffffffff8c11c420 R15: ffff88802b99a950
lock_is_held include/linux/lockdep.h:287 [inline]
___might_sleep+0xf2/0x600 kernel/sched/core.c:9605
down_write+0x17/0x60 kernel/locking/rwsem.c:1550
kernfs_remove_by_name_ns+0x29/0x100 fs/kernfs/dir.c:1561
kernfs_remove_by_name include/linux/kernfs.h:598 [inline]
remove_files fs/sysfs/group.c:28 [inline]
sysfs_remove_group+0xf8/0x290 fs/sysfs/group.c:289
sysfs_remove_groups+0x50/0xa0 fs/sysfs/group.c:313
device_del+0x620/0xa70 drivers/base/core.c:3599
unregister_netdevice_many+0x141e/0x18f0 net/core/dev.c:11161
ip6_tnl_exit_batch_net+0x5cf/0x620 net/ipv6/ip6_tunnel.c:2324
ops_exit_list net/core/net_namespace.c:177 [inline]
cleanup_net+0x77b/0xb80 net/core/net_namespace.c:635
process_one_work+0x863/0x1000 kernel/workqueue.c:2310
worker_thread+0xaa8/0x12a0 kernel/workqueue.c:2457
kthread+0x436/0x520 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
----------------
Code disassembly (best guess):
0: 75 40 jne 0x42
2: 48 c7 04 24 00 00 00 movq $0x0,(%rsp)
9: 00
a: 9c pushf
b: 8f 04 24 pop (%rsp)
e: f7 04 24 00 02 00 00 testl $0x200,(%rsp)
15: 75 46 jne 0x5d
17: 41 f7 c5 00 02 00 00 test $0x200,%r13d
1e: 74 01 je 0x21
20: fb sti
21: 65 48 8b 04 25 28 00 mov %gs:0x28,%rax
28: 00 00
* 2a: 48 3b 44 24 08 cmp 0x8(%rsp),%rax <-- trapping instruction
2f: 75 3c jne 0x6d
31: 89 e8 mov %ebp,%eax
33: 48 83 c4 10 add $0x10,%rsp
37: 5b pop %rbx
38: 41 5c pop %r12
3a: 41 5d pop %r13
3c: 41 5e pop %r14
3e: 41 5f pop %r15