list_del corruption, ffff888062374490->next is NULL
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:53!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 5938 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:__list_del_entry_valid_or_report+0xdf/0x190 lib/list_debug.c:52
Code: 49 39 1f 0f 85 9e 00 00 00 b0 01 5b 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc cc 48 c7 c7 a0 fc 29 8c 48 89 de e8 42 ee 63 fc 90 <0f> 0b 48 c7 c7 00 fd 29 8c 48 89 de e8 30 ee 63 fc 90 0f 0b 4c 89
RSP: 0018:ffffc90000007d58 EFLAGS: 00010046
RAX: 0000000000000033 RBX: ffff888062374490 RCX: a3071ccae6415100
RDX: 0000000000000100 RSI: 0000000000000101 RDI: 0000000000000000
RBP: 0000000000000203 R08: ffffc90000007ae7 R09: 1ffff92000000f5c
R10: dffffc0000000000 R11: fffff52000000f5d R12: 1ffff1100c46e892
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  000055556ad2b500(0000) GS:ffff888125002000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f01f8232368 CR3: 0000000061fe0000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 __list_del_entry_valid include/linux/list.h:132 [inline]
 __list_del_entry include/linux/list.h:223 [inline]
 list_del_init include/linux/list.h:295 [inline]
 dst_destroy+0x202/0x5a0 net/core/dst.c:163
 rcu_do_batch kernel/rcu/tree.c:2617 [inline]
 rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869
 handle_softirqs+0x22a/0x870 kernel/softirq.c:626
 __do_softirq kernel/softirq.c:660 [inline]
 invoke_softirq kernel/softirq.c:496 [inline]
 __irq_exit_rcu+0x5f/0x150 kernel/softirq.c:727
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:743
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1056
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:kernfs_name_compare fs/kernfs/dir.c:335 [inline]
RIP: 0010:kernfs_find_ns+0x126/0x490 fs/kernfs/dir.c:886
Code: 8b 7c 24 08 4c 89 ee e8 28 f6 ff ff 4d 85 ff 0f 84 7a 02 00 00 89 c5 4c 89 eb 4d 8d 67 20 4c 89 e0 48 c1 e8 03 42 0f b6 04 30 <84> c0 0f 85 ba 01 00 00 45 8b 24 24 89 ef 44 89 e6 e8 34 fd 55 ff
RSP: 0018:ffffc90003167398 EFLAGS: 00000a02
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff88802d241e80
RDX: 0000000000000000 RSI: 3324f03600000000 RDI: 0000000000000000
RBP: 000000003324f037 R08: ffffffff826fc2ec R09: ffffffff8e960620
R10: dffffc0000000000 R11: ffffed100375db25 R12: ffff8880344dd8d0
R13: 0000000000000000 R14: dffffc0000000000 R15: ffff8880344dd8b0
 kernfs_remove_by_name_ns+0x4b/0x130 fs/kernfs/dir.c:1726
 kernfs_remove_by_name include/linux/kernfs.h:631 [inline]
 remove_files fs/sysfs/group.c:28 [inline]
 sysfs_remove_group+0xfc/0x2e0 fs/sysfs/group.c:328
 sysfs_remove_groups+0x54/0xb0 fs/sysfs/group.c:352
 device_remove_groups drivers/base/core.c:2843 [inline]
 device_remove_attrs+0x1cb/0x280 drivers/base/core.c:2973
 device_del+0x51f/0x8f0 drivers/base/core.c:3877
 unregister_netdevice_many_notify+0x1e0e/0x2380 net/core/dev.c:12466
 unregister_netdevice_many net/core/dev.c:12494 [inline]
 unregister_netdevice_queue+0x31f/0x360 net/core/dev.c:12308
 unregister_netdevice include/linux/netdevice.h:3414 [inline]
 nsim_destroy+0x21f/0x730 drivers/net/netdevsim/netdev.c:1182
 __nsim_dev_port_del+0x14d/0x1b0 drivers/net/netdevsim/dev.c:1528
 nsim_dev_port_del_all drivers/net/netdevsim/dev.c:1540 [inline]
 nsim_dev_reload_destroy+0x288/0x490 drivers/net/netdevsim/dev.c:1764
 nsim_drv_remove+0x58/0x170 drivers/net/netdevsim/dev.c:1779
 device_remove drivers/base/dd.c:571 [inline]
 __device_release_driver drivers/base/dd.c:1284 [inline]
 device_release_driver_internal+0x46f/0x860 drivers/base/dd.c:1307
 bus_remove_device+0x34d/0x440 drivers/base/bus.c:616
 device_del+0x527/0x8f0 drivers/base/core.c:3878
 device_unregister+0x21/0xf0 drivers/base/core.c:3919
 nsim_bus_dev_del drivers/net/netdevsim/bus.c:491 [inline]
 del_device_store+0x2b0/0x370 drivers/net/netdevsim/bus.c:244
 kernfs_fop_write_iter+0x3af/0x540 fs/kernfs/file.c:352
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x61d/0xb90 fs/read_write.c:688
 ksys_write+0x150/0x270 fs/read_write.c:740
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2d7115cfce
Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007ffe284c2d88 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000055556ad2b500 RCX: 00007f2d7115cfce
RDX: 0000000000000001 RSI: 00007ffe284c2e10 RDI: 0000000000000005
RBP: 00007f2d7123345c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffe284c2e10 R14: 00007f2d71f44620 R15: 0000000000000003
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_del_entry_valid_or_report+0xdf/0x190 lib/list_debug.c:52
Code: 49 39 1f 0f 85 9e 00 00 00 b0 01 5b 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc cc 48 c7 c7 a0 fc 29 8c 48 89 de e8 42 ee 63 fc 90 <0f> 0b 48 c7 c7 00 fd 29 8c 48 89 de e8 30 ee 63 fc 90 0f 0b 4c 89
RSP: 0018:ffffc90000007d58 EFLAGS: 00010046
RAX: 0000000000000033 RBX: ffff888062374490 RCX: a3071ccae6415100
RDX: 0000000000000100 RSI: 0000000000000101 RDI: 0000000000000000
RBP: 0000000000000203 R08: ffffc90000007ae7 R09: 1ffff92000000f5c
R10: dffffc0000000000 R11: fffff52000000f5d R12: 1ffff1100c46e892
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  000055556ad2b500(0000) GS:ffff888125002000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f01f8232368 CR3: 0000000061fe0000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	8b 7c 24 08          	mov    0x8(%rsp),%edi
   4:	4c 89 ee             	mov    %r13,%rsi
   7:	e8 28 f6 ff ff       	call   0xfffff634
   c:	4d 85 ff             	test   %r15,%r15
   f:	0f 84 7a 02 00 00    	je     0x28f
  15:	89 c5                	mov    %eax,%ebp
  17:	4c 89 eb             	mov    %r13,%rbx
  1a:	4d 8d 67 20          	lea    0x20(%r15),%r12
  1e:	4c 89 e0             	mov    %r12,%rax
  21:	48 c1 e8 03          	shr    $0x3,%rax
  25:	42 0f b6 04 30       	movzbl (%rax,%r14,1),%eax
* 2a:	84 c0                	test   %al,%al <-- trapping instruction
  2c:	0f 85 ba 01 00 00    	jne    0x1ec
  32:	45 8b 24 24          	mov    (%r12),%r12d
  36:	89 ef                	mov    %ebp,%edi
  38:	44 89 e6             	mov    %r12d,%esi
  3b:	e8 34 fd 55 ff       	call   0xff55fd74