Oops: general protection fault, probably for non-canonical address 0xdffffc00000a2403: 0000 [#1] SMP KASAN PTI KASAN: probably user-memory-access in range [0x0000000000512018-0x000000000051201f] CPU: 0 UID: 0 PID: 6318 Comm: syz.1.103 Not tainted 6.15.0-rc6-syzkaller-00160-gc39b1bb5bc6d #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 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+0x4d0/0x1f80 net/smc/smc_diag.c:217 Code: 80 3c 2f 00 74 08 48 89 df e8 cc 37 1c f7 4c 8b 23 4d 85 e4 0f 84 22 02 00 00 48 89 5c 24 38 49 83 c4 18 4c 89 e0 48 c1 e8 03 <42> 80 3c 28 00 74 08 4c 89 e7 e8 a1 37 1c f7 4d 8b 2c 24 49 83 c5 RSP: 0018:ffffc9000bf46f60 EFLAGS: 00010206 RAX: 00000000000a2403 RBX: ffff8880760d4160 RCX: ffff888030dc3c00 RDX: 0000000000000000 RSI: 0000000080000001 RDI: 0000000000000000 RBP: ffffc9000bf472d0 R08: ffff8880760d3c5f R09: 1ffff1100ec1a78b R10: dffffc0000000000 R11: ffffed100ec1a78c R12: 0000000000512018 R13: dffffc0000000000 R14: ffff8880760d3c00 R15: 1ffff1100ec1a82c FS: 00007fdb8efd06c0(0000) GS:ffff8881260c7000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000020000000e000 CR3: 0000000030498000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> smc_diag_dump+0x59/0xa0 net/smc/smc_diag.c:236 netlink_dump+0x64e/0xe70 net/netlink/af_netlink.c:2309 __netlink_dump_start+0x5cb/0x7e0 net/netlink/af_netlink.c:2424 netlink_dump_start include/linux/netlink.h:340 [inline] smc_diag_handler_dump+0x178/0x210 net/smc/smc_diag.c:251 sock_diag_rcv_msg+0x3d7/0x610 net/core/sock_diag.c:-1 netlink_rcv_skb+0x219/0x490 net/netlink/af_netlink.c:2534 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline] netlink_unicast+0x75b/0x8d0 net/netlink/af_netlink.c:1339 netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1883 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg+0x219/0x270 net/socket.c:727 ____sys_sendmsg+0x505/0x830 net/socket.c:2566 ___sys_sendmsg+0x21f/0x2a0 net/socket.c:2620 __sys_sendmsg net/socket.c:2652 [inline] __do_sys_sendmsg net/socket.c:2657 [inline] __se_sys_sendmsg net/socket.c:2655 [inline] __x64_sys_sendmsg+0x19b/0x260 net/socket.c:2655 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fdb8e18e969 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:00007fdb8efd0038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fdb8e3b6080 RCX: 00007fdb8e18e969 RDX: 0000000000000600 RSI: 0000200000000540 RDI: 0000000000000003 RBP: 00007fdb8e210ab1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fdb8e3b6080 R15: 00007ffe740fd778 </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+0x4d0/0x1f80 net/smc/smc_diag.c:217 Code: 80 3c 2f 00 74 08 48 89 df e8 cc 37 1c f7 4c 8b 23 4d 85 e4 0f 84 22 02 00 00 48 89 5c 24 38 49 83 c4 18 4c 89 e0 48 c1 e8 03 <42> 80 3c 28 00 74 08 4c 89 e7 e8 a1 37 1c f7 4d 8b 2c 24 49 83 c5 RSP: 0018:ffffc9000bf46f60 EFLAGS: 00010206 RAX: 00000000000a2403 RBX: ffff8880760d4160 RCX: ffff888030dc3c00 RDX: 0000000000000000 RSI: 0000000080000001 RDI: 0000000000000000 RBP: ffffc9000bf472d0 R08: ffff8880760d3c5f R09: 1ffff1100ec1a78b R10: dffffc0000000000 R11: ffffed100ec1a78c R12: 0000000000512018 R13: dffffc0000000000 R14: ffff8880760d3c00 R15: 1ffff1100ec1a82c FS: 00007fdb8efd06c0(0000) GS:ffff8881260c7000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000020000000e000 CR3: 0000000030498000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- 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 cc 37 1c f7 call 0xf71c37da e: 4c 8b 23 mov (%rbx),%r12 11: 4d 85 e4 test %r12,%r12 14: 0f 84 22 02 00 00 je 0x23c 1a: 48 89 5c 24 38 mov %rbx,0x38(%rsp) 1f: 49 83 c4 18 add $0x18,%r12 23: 4c 89 e0 mov %r12,%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: 4c 89 e7 mov %r12,%rdi 34: e8 a1 37 1c f7 call 0xf71c37da 39: 4d 8b 2c 24 mov (%r12),%r13 3d: 49 rex.WB 3e: 83 .byte 0x83 3f: c5 .byte 0xc5