general protection fault, probably for non-canonical address 0xdffffc000000000a: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000050-0x0000000000000057]
CPU: 0 PID: 5925 Comm: syz-executor.2 Not tainted 5.17.0-rc7-syzkaller-00020-gea4424be1688 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014
RIP: 0010:dev_name include/linux/device.h:636 [inline]
RIP: 0010:smc_pnet_find_ib net/smc/smc_pnet.c:314 [inline]
RIP: 0010:smc_pnet_add_ib net/smc/smc_pnet.c:416 [inline]
RIP: 0010:smc_pnet_enter net/smc/smc_pnet.c:515 [inline]
RIP: 0010:smc_pnet_add+0xbfc/0x1740 net/smc/smc_pnet.c:558
Code: 8d be 58 07 00 00 48 89 f8 48 c1 e8 03 80 3c 28 00 0f 85 53 09 00 00 4d 8b a6 58 07 00 00 49 8d 7c 24 50 48 89 f8 48 c1 e8 03 <80> 3c 28 00 0f 85 2c 09 00 00 4d 8b 74 24 50 4d 85 f6 0f 85 21 ff
RSP: 0018:ffffc9000f9f7520 EFLAGS: 00010206
RAX: 000000000000000a RBX: ffff88806acff000 RCX: ffffc900030ec000
RDX: 0000000000040000 RSI: ffffffff88c76661 RDI: 0000000000000050
RBP: dffffc0000000000 R08: 0000000000000000 R09: ffffc9000f9f745f
R10: ffffffff88c76653 R11: 0000000000000000 R12: 0000000000000000
R13: ffff888016b7242c R14: ffff88801779c000 R15: ffff88806acff010
FS:  0000000000000000(0000) GS:ffff88802ca00000(0063) knlGS:00000000f593ab40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000032a23000 CR3: 000000001aa9b000 CR4: 0000000000150ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 genl_family_rcv_msg_doit+0x228/0x320 net/netlink/genetlink.c:731
 genl_family_rcv_msg net/netlink/genetlink.c:775 [inline]
 genl_rcv_msg+0x328/0x580 net/netlink/genetlink.c:792
 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2494
 genl_rcv+0x24/0x40 net/netlink/genetlink.c:803
 netlink_unicast_kernel net/netlink/af_netlink.c:1317 [inline]
 netlink_unicast+0x539/0x7e0 net/netlink/af_netlink.c:1343
 netlink_sendmsg+0x904/0xe00 net/netlink/af_netlink.c:1919
 sock_sendmsg_nosec net/socket.c:705 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:725
 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2413
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2467
 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2496
 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
 __do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178
 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203
 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c
RIP: 0023:0xf6f40549
Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000f593a5cc EFLAGS: 00000296 ORIG_RAX: 0000000000000172
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000020000280
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:dev_name include/linux/device.h:636 [inline]
RIP: 0010:smc_pnet_find_ib net/smc/smc_pnet.c:314 [inline]
RIP: 0010:smc_pnet_add_ib net/smc/smc_pnet.c:416 [inline]
RIP: 0010:smc_pnet_enter net/smc/smc_pnet.c:515 [inline]
RIP: 0010:smc_pnet_add+0xbfc/0x1740 net/smc/smc_pnet.c:558
Code: 8d be 58 07 00 00 48 89 f8 48 c1 e8 03 80 3c 28 00 0f 85 53 09 00 00 4d 8b a6 58 07 00 00 49 8d 7c 24 50 48 89 f8 48 c1 e8 03 <80> 3c 28 00 0f 85 2c 09 00 00 4d 8b 74 24 50 4d 85 f6 0f 85 21 ff
RSP: 0018:ffffc9000f9f7520 EFLAGS: 00010206
RAX: 000000000000000a RBX: ffff88806acff000 RCX: ffffc900030ec000
RDX: 0000000000040000 RSI: ffffffff88c76661 RDI: 0000000000000050
RBP: dffffc0000000000 R08: 0000000000000000 R09: ffffc9000f9f745f
R10: ffffffff88c76653 R11: 0000000000000000 R12: 0000000000000000
R13: ffff888016b7242c R14: ffff88801779c000 R15: ffff88806acff010
FS:  0000000000000000(0000) GS:ffff88802cd00000(0063) knlGS:00000000f593ab40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000ffae2f18 CR3: 000000001aa9b000 CR4: 0000000000150ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	8d be 58 07 00 00    	lea    0x758(%rsi),%edi
   6:	48 89 f8             	mov    %rdi,%rax
   9:	48 c1 e8 03          	shr    $0x3,%rax
   d:	80 3c 28 00          	cmpb   $0x0,(%rax,%rbp,1)
  11:	0f 85 53 09 00 00    	jne    0x96a
  17:	4d 8b a6 58 07 00 00 	mov    0x758(%r14),%r12
  1e:	49 8d 7c 24 50       	lea    0x50(%r12),%rdi
  23:	48 89 f8             	mov    %rdi,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	80 3c 28 00          	cmpb   $0x0,(%rax,%rbp,1) <-- trapping instruction
  2e:	0f 85 2c 09 00 00    	jne    0x960
  34:	4d 8b 74 24 50       	mov    0x50(%r12),%r14
  39:	4d 85 f6             	test   %r14,%r14
  3c:	0f                   	.byte 0xf
  3d:	85 21                	test   %esp,(%rcx)
  3f:	ff                   	.byte 0xff