Oops: general protection fault, probably for non-canonical address 0xdffffc00000a2403: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: probably user-memory-access in range [0x0000000000512018-0x000000000051201f]
CPU: 1 UID: 0 PID: 18090 Comm: syz.5.1964 Not tainted 6.14.0-rc4-syzkaller-00199-g76544811c850 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:smc_diag_msg_common_fill net/smc/smc_diag.c:44 [inline]
RIP: 0010:__smc_diag_dump net/smc/smc_diag.c:89 [inline]
RIP: 0010:smc_diag_dump_proto+0x6d7/0x3280 net/smc/smc_diag.c:217
Code: 80 3c 2f 00 74 08 48 89 df e8 b5 0d 76 f6 48 89 5c 24 28 48 8b 1b 48 85 db 0f 84 51 02 00 00 48 83 c3 18 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 8a 0d 76 f6 48 8b 44 24 18 4c 8d
RSP: 0018:ffffc9000b0aee60 EFLAGS: 00010206
RAX: 00000000000a2403 RBX: 0000000000512018 RCX: ffff88801cfe5a00
RDX: 0000000000000000 RSI: 0000000080000001 RDI: 0000000000000000
RBP: ffffc9000b0af2f0 R08: ffffffff89da6fb2 R09: 1ffff1100dc70d8b
R10: dffffc0000000000 R11: ffffed100dc70d8c R12: ffff88804b2f0000
R13: dffffc0000000000 R14: ffff88806e386c00 R15: 1ffff1100dc70e2b
FS:  0000000000000000(0000) GS:ffff8880b8700000(0063) knlGS:00000000f5076b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 000000008000e000 CR3: 0000000075e68000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 smc_diag_dump+0x59/0xa0 net/smc/smc_diag.c:236
 netlink_dump+0x64d/0xe10 net/netlink/af_netlink.c:2308
 __netlink_dump_start+0x5a2/0x790 net/netlink/af_netlink.c:2423
 netlink_dump_start include/linux/netlink.h:340 [inline]
 smc_diag_handler_dump+0x1ab/0x250 net/smc/smc_diag.c:251
 sock_diag_rcv_msg+0x3dc/0x5f0
 netlink_rcv_skb+0x206/0x480 net/netlink/af_netlink.c:2533
 netlink_unicast_kernel net/netlink/af_netlink.c:1312 [inline]
 netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1338
 netlink_sendmsg+0x8de/0xcb0 net/netlink/af_netlink.c:1882
 sock_sendmsg_nosec net/socket.c:718 [inline]
 __sock_sendmsg+0x221/0x270 net/socket.c:733
 ____sys_sendmsg+0x53a/0x860 net/socket.c:2573
 ___sys_sendmsg net/socket.c:2627 [inline]
 __sys_sendmsg+0x269/0x350 net/socket.c:2659
 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]
 __do_fast_syscall_32+0xb4/0x110 arch/x86/entry/common.c:386
 do_fast_syscall_32+0x34/0x80 arch/x86/entry/common.c:411
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf7f54579
Code: 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 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 002b:00000000f507655c EFLAGS: 00000206 ORIG_RAX: 0000000000000172
RAX: ffffffffffffffda RBX: 000000000000000c RCX: 0000000080000540
RDX: 0000000000000600 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:smc_diag_msg_common_fill net/smc/smc_diag.c:44 [inline]
RIP: 0010:__smc_diag_dump net/smc/smc_diag.c:89 [inline]
RIP: 0010:smc_diag_dump_proto+0x6d7/0x3280 net/smc/smc_diag.c:217
Code: 80 3c 2f 00 74 08 48 89 df e8 b5 0d 76 f6 48 89 5c 24 28 48 8b 1b 48 85 db 0f 84 51 02 00 00 48 83 c3 18 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 8a 0d 76 f6 48 8b 44 24 18 4c 8d
RSP: 0018:ffffc9000b0aee60 EFLAGS: 00010206
RAX: 00000000000a2403 RBX: 0000000000512018 RCX: ffff88801cfe5a00
RDX: 0000000000000000 RSI: 0000000080000001 RDI: 0000000000000000
RBP: ffffc9000b0af2f0 R08: ffffffff89da6fb2 R09: 1ffff1100dc70d8b
R10: dffffc0000000000 R11: ffffed100dc70d8c R12: ffff88804b2f0000
R13: dffffc0000000000 R14: ffff88806e386c00 R15: 1ffff1100dc70e2b
FS:  0000000000000000(0000) GS:ffff8880b8700000(0063) knlGS:00000000f5076b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 000000008000e000 CR3: 0000000075e68000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	80 3c 2f 00          	cmpb   $0x0,(%rdi,%rbp,1)
   4:	74 08                	je     0xe
   6:	48 89 df             	mov    %rbx,%rdi
   9:	e8 b5 0d 76 f6       	call   0xf6760dc3
   e:	48 89 5c 24 28       	mov    %rbx,0x28(%rsp)
  13:	48 8b 1b             	mov    (%rbx),%rbx
  16:	48 85 db             	test   %rbx,%rbx
  19:	0f 84 51 02 00 00    	je     0x270
  1f:	48 83 c3 18          	add    $0x18,%rbx
  23:	48 89 d8             	mov    %rbx,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	48 89 df             	mov    %rbx,%rdi
  34:	e8 8a 0d 76 f6       	call   0xf6760dc3
  39:	48 8b 44 24 18       	mov    0x18(%rsp),%rax
  3e:	4c                   	rex.WR
  3f:	8d                   	.byte 0x8d