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: 13733 Comm: syz.1.2095 Not tainted 6.13.0-syzkaller-09685-gc2933b2befe2 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 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+0x6d9/0x3270 net/smc/smc_diag.c:217 Code: 80 3c 2c 00 74 08 48 89 df e8 43 c9 85 f6 48 89 5c 24 30 48 8b 1b 48 85 db 0f 84 2d 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 18 c9 85 f6 48 8b 44 24 28 4c 8d RSP: 0018:ffffc90002f96e80 EFLAGS: 00010206 RAX: 00000000000a2403 RBX: 0000000000512018 RCX: ffff888030a78000 RDX: 0000000000000000 RSI: 0000000080000001 RDI: 0000000000000000 RBP: ffffc90002f97310 R08: ffffffff89cd1b92 R09: 1ffff1100506d00b R10: dffffc0000000000 R11: ffffed100506d00c R12: 1ffff1100506d0ab R13: dffffc0000000000 R14: ffff888028368000 R15: ffff888033518010 FS: 00007f36f35cb6c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002000e000 CR3: 000000002a324000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: smc_diag_dump+0x59/0xa0 net/smc/smc_diag.c:236 netlink_dump+0x64d/0xe10 net/netlink/af_netlink.c:2318 __netlink_dump_start+0x5a2/0x790 net/netlink/af_netlink.c:2433 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+0x1e3/0x430 net/netlink/af_netlink.c:2543 netlink_unicast_kernel net/netlink/af_netlink.c:1322 [inline] netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1348 netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1892 sock_sendmsg_nosec net/socket.c:713 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:728 ____sys_sendmsg+0x52a/0x7e0 net/socket.c:2568 ___sys_sendmsg net/socket.c:2622 [inline] __sys_sendmsg+0x269/0x350 net/socket.c:2654 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f36f278cda9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f36f35cb038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f36f29a6160 RCX: 00007f36f278cda9 RDX: 0000000000000600 RSI: 0000000020000540 RDI: 0000000000000019 RBP: 00007f36f280e2a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f36f29a6160 R15: 00007ffcdab75578 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+0x6d9/0x3270 net/smc/smc_diag.c:217 Code: 80 3c 2c 00 74 08 48 89 df e8 43 c9 85 f6 48 89 5c 24 30 48 8b 1b 48 85 db 0f 84 2d 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 18 c9 85 f6 48 8b 44 24 28 4c 8d RSP: 0018:ffffc90002f96e80 EFLAGS: 00010206 RAX: 00000000000a2403 RBX: 0000000000512018 RCX: ffff888030a78000 RDX: 0000000000000000 RSI: 0000000080000001 RDI: 0000000000000000 RBP: ffffc90002f97310 R08: ffffffff89cd1b92 R09: 1ffff1100506d00b R10: dffffc0000000000 R11: ffffed100506d00c R12: 1ffff1100506d0ab R13: dffffc0000000000 R14: ffff888028368000 R15: ffff888033518010 FS: 00007f36f35cb6c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002000e000 CR3: 000000002a324000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 80 3c 2c 00 cmpb $0x0,(%rsp,%rbp,1) 4: 74 08 je 0xe 6: 48 89 df mov %rbx,%rdi 9: e8 43 c9 85 f6 call 0xf685c951 e: 48 89 5c 24 30 mov %rbx,0x30(%rsp) 13: 48 8b 1b mov (%rbx),%rbx 16: 48 85 db test %rbx,%rbx 19: 0f 84 2d 02 00 00 je 0x24c 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 18 c9 85 f6 call 0xf685c951 39: 48 8b 44 24 28 mov 0x28(%rsp),%rax 3e: 4c rex.WR 3f: 8d .byte 0x8d