netlink: 'syz-executor.4': attribute type 1 has an invalid length.
netlink: 21 bytes leftover after parsing attributes in process `syz-executor.4'.
general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 0 PID: 21381 Comm: syz-executor.4 Not tainted 5.6.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__list_del_entry_valid+0x23/0x100 lib/list_debug.c:42
Code: bb fd 0f 0b 0f 1f 00 55 48 89 e5 41 57 41 56 41 54 53 49 89 fe 49 bc 00 00 00 00 00 fc ff df 48 83 c7 08 48 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 05 e8 b1 63 0f fe 4d 8b 7e 08 4c 89 f0 48 c1 e8
RSP: 0018:ffffc90003b8f6e8 EFLAGS: 00010202
RAX: 0000000000000001 RBX: ffff88809f458000 RCX: 0000000000000001
RDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000000008
RBP: ffffc90003b8f708 R08: dffffc0000000000 R09: fffff52000771ed8
R10: fffff52000771ed8 R11: 0000000000000000 R12: dffffc0000000000
R13: 000000000000000f R14: 0000000000000000 R15: 0000000000000000
FS:  00007f50439b3700(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2be21000 CR3: 0000000093c89000 CR4: 00000000001426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __list_del_entry include/linux/list.h:132 [inline]
 list_del_init include/linux/list.h:204 [inline]
 smc_ib_remove_dev+0x59/0x230 net/smc/smc_ib.c:578
 remove_client_context+0xb9/0x1e0 drivers/infiniband/core/device.c:724
 disable_device+0xfc/0x300 drivers/infiniband/core/device.c:1268
 __ib_unregister_device+0x70/0x160 drivers/infiniband/core/device.c:1435
 ib_unregister_device_and_put+0xc6/0x100 drivers/infiniband/core/device.c:1498
 nldev_dellink+0x1f1/0x260 drivers/infiniband/core/nldev.c:1568
 rdma_nl_rcv_msg drivers/infiniband/core/netlink.c:195 [inline]
 rdma_nl_rcv_skb drivers/infiniband/core/netlink.c:239 [inline]
 rdma_nl_rcv+0x701/0xa20 drivers/infiniband/core/netlink.c:259
 netlink_unicast_kernel net/netlink/af_netlink.c:1303 [inline]
 netlink_unicast+0x766/0x920 net/netlink/af_netlink.c:1329
 netlink_sendmsg+0xa2b/0xd40 net/netlink/af_netlink.c:1918
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg net/socket.c:672 [inline]
 __sys_sendto+0x43c/0x5e0 net/socket.c:1998
 __do_sys_sendto net/socket.c:2010 [inline]
 __se_sys_sendto net/socket.c:2006 [inline]
 __x64_sys_sendto+0xe5/0x100 net/socket.c:2006
 do_syscall_64+0xf7/0x1c0 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45c449
Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f50439b2c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f50439b36d4 RCX: 000000000045c449
RDX: 0000000000010a73 RSI: 0000000020000000 RDI: 0000000000000003
RBP: 000000000076bf20 R08: 0000000000000000 R09: 4b6ae4f95a5de35b
R10: 00000000000008c0 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000a04 R14: 00000000004cc790 R15: 000000000076bf2c
Modules linked in:
---[ end trace fedeb471663a1117 ]---
RIP: 0010:__list_del_entry_valid+0x23/0x100 lib/list_debug.c:42
Code: bb fd 0f 0b 0f 1f 00 55 48 89 e5 41 57 41 56 41 54 53 49 89 fe 49 bc 00 00 00 00 00 fc ff df 48 83 c7 08 48 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 05 e8 b1 63 0f fe 4d 8b 7e 08 4c 89 f0 48 c1 e8
RSP: 0018:ffffc90003b8f6e8 EFLAGS: 00010202
RAX: 0000000000000001 RBX: ffff88809f458000 RCX: 0000000000000001
RDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000000008
RBP: ffffc90003b8f708 R08: dffffc0000000000 R09: fffff52000771ed8
R10: fffff52000771ed8 R11: 0000000000000000 R12: dffffc0000000000
R13: 000000000000000f R14: 0000000000000000 R15: 0000000000000000
FS:  00007f50439b3700(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2be21000 CR3: 0000000093c89000 CR4: 00000000001426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400