netdevsim netdevsim1 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
netdevsim netdevsim1 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
netdevsim netdevsim1 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
device ip6gretap1 left promiscuous mode
bridge0: port 3(ip6gretap1) entered disabled state
bond1: (slave ip6gretap3): Releasing active interface
general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]
CPU: 1 PID: 210 Comm: kworker/u4:4 Not tainted 5.11.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
RIP: 0010:rlb_clear_slave+0xdb/0x530 drivers/net/bonding/bond_alb.c:391
Code: 4c 01 f8 48 89 44 24 30 eb 0a 41 83 fd ff 0f 84 15 02 00 00 45 89 ec 49 c1 e4 06 4b 8d 2c 26 48 8d 7d 14 48 89 f8 48 c1 e8 03 <42> 0f b6 14 38 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85
RSP: 0018:ffffc90000fcf648 EFLAGS: 00010203
RAX: 0000000000000002 RBX: 0000000000000000 RCX: ffffffff8151a5d0
RDX: 1ffff110061869a6 RSI: 0000000000000004 RDI: 0000000000000014
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000003
R10: fffff520001f9ebb R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005621fbbbc110 CR3: 000000001e2f8000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 bond_alb_deinit_slave+0x3df/0x6b0 drivers/net/bonding/bond_alb.c:1665
 __bond_release_one.cold+0x2e7/0xacb drivers/net/bonding/bond_main.c:2137
 bond_slave_netdev_event drivers/net/bonding/bond_main.c:3333 [inline]
 bond_netdev_event+0x79c/0xa60 drivers/net/bonding/bond_main.c:3444
 notifier_call_chain+0x94/0x170 kernel/notifier.c:83
 call_netdevice_notifiers_extack net/core/dev.c:2052 [inline]
 call_netdevice_notifiers net/core/dev.c:2066 [inline]
 rollback_registered_many+0x7ad/0x1290 net/core/dev.c:9496
 unregister_netdevice_many.part.0+0x10/0x2b0 net/core/dev.c:10736
 ip6gre_exit_batch_net+0x3d3/0x5b0 net/ipv6/ip6_gre.c:1630
 cleanup_net+0x423/0x990 net/core/net_namespace.c:604
 process_one_work+0x84c/0x13b0 kernel/workqueue.c:2275
 worker_thread+0x598/0xf80 kernel/workqueue.c:2421
 kthread+0x36f/0x450 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296
Modules linked in:
---[ end trace 82e15f4230c9e804 ]---
RIP: 0010:rlb_clear_slave+0xdb/0x530 drivers/net/bonding/bond_alb.c:391
Code: 4c 01 f8 48 89 44 24 30 eb 0a 41 83 fd ff 0f 84 15 02 00 00 45 89 ec 49 c1 e4 06 4b 8d 2c 26 48 8d 7d 14 48 89 f8 48 c1 e8 03 <42> 0f b6 14 38 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85
RSP: 0018:ffffc90000fcf648 EFLAGS: 00010203
RAX: 0000000000000002 RBX: 0000000000000000 RCX: ffffffff8151a5d0
RDX: 1ffff110061869a6 RSI: 0000000000000004 RDI: 0000000000000014
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000003
R10: fffff520001f9ebb R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005621fbbbc110 CR3: 000000001e2f8000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	4c 01 f8             	add    %r15,%rax
   3:	48 89 44 24 30       	mov    %rax,0x30(%rsp)
   8:	eb 0a                	jmp    0x14
   a:	41 83 fd ff          	cmp    $0xffffffff,%r13d
   e:	0f 84 15 02 00 00    	je     0x229
  14:	45 89 ec             	mov    %r13d,%r12d
  17:	49 c1 e4 06          	shl    $0x6,%r12
  1b:	4b 8d 2c 26          	lea    (%r14,%r12,1),%rbp
  1f:	48 8d 7d 14          	lea    0x14(%rbp),%rdi
  23:	48 89 f8             	mov    %rdi,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 0f b6 14 38       	movzbl (%rax,%r15,1),%edx <-- trapping instruction
  2f:	48 89 f8             	mov    %rdi,%rax
  32:	83 e0 07             	and    $0x7,%eax
  35:	83 c0 03             	add    $0x3,%eax
  38:	38 d0                	cmp    %dl,%al
  3a:	7c 08                	jl     0x44
  3c:	84 d2                	test   %dl,%dl
  3e:	0f                   	.byte 0xf
  3f:	85                   	.byte 0x85