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: 6832 Comm: syz.1.17 Not tainted 6.15.0-rc6-syzkaller-g5723cc3450bc #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.constprop.0+0x3cd/0x24f0 net/smc/smc_diag.c:89 Code: 4c 8b b3 60 05 00 00 4d 85 f6 0f 84 f6 02 00 00 e8 78 e1 a1 f6 49 8d 7e 18 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 c7 1e 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b RSP: 0018:ffffc90003867168 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: ffff88806e15d400 RCX: ffffffff895599a4 RDX: 00000000000a2403 RSI: ffffffff8b18ce58 RDI: 0000000000512018 RBP: ffff8880292d8000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000001 R11: 0000000000000001 R12: ffff88805f1e25e8 R13: ffff888077218140 R14: 0000000000512000 R15: ffff88806e15d960 FS: 00007fb63a06f6c0(0000) GS:ffff8881249e7000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000400000000140 CR3: 0000000061262000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: smc_diag_dump_proto+0x26d/0x420 net/smc/smc_diag.c:217 smc_diag_dump+0x84/0x90 net/smc/smc_diag.c:236 netlink_dump+0x53e/0xd00 net/netlink/af_netlink.c:2309 __netlink_dump_start+0x6d6/0x990 net/netlink/af_netlink.c:2424 netlink_dump_start include/linux/netlink.h:340 [inline] smc_diag_handler_dump+0x1f9/0x240 net/smc/smc_diag.c:251 __sock_diag_cmd net/core/sock_diag.c:249 [inline] sock_diag_rcv_msg+0x43a/0x790 net/core/sock_diag.c:287 netlink_rcv_skb+0x16d/0x440 net/netlink/af_netlink.c:2534 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline] netlink_unicast+0x53a/0x7f0 net/netlink/af_netlink.c:1339 netlink_sendmsg+0x8d1/0xdd0 net/netlink/af_netlink.c:1883 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg net/socket.c:727 [inline] ____sys_sendmsg+0xa95/0xc70 net/socket.c:2566 ___sys_sendmsg+0x134/0x1d0 net/socket.c:2620 __sys_sendmsg+0x16d/0x220 net/socket.c:2652 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fb63918d169 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:00007fb63a06f038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fb6393a6080 RCX: 00007fb63918d169 RDX: 000000000400c000 RSI: 0000400000000140 RDI: 000000000000003d RBP: 00007fb63920e2a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fb6393a6080 R15: 00007fff6fa32688 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.constprop.0+0x3cd/0x24f0 net/smc/smc_diag.c:89 Code: 4c 8b b3 60 05 00 00 4d 85 f6 0f 84 f6 02 00 00 e8 78 e1 a1 f6 49 8d 7e 18 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 c7 1e 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b RSP: 0018:ffffc90003867168 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: ffff88806e15d400 RCX: ffffffff895599a4 RDX: 00000000000a2403 RSI: ffffffff8b18ce58 RDI: 0000000000512018 RBP: ffff8880292d8000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000001 R11: 0000000000000001 R12: ffff88805f1e25e8 R13: ffff888077218140 R14: 0000000000512000 R15: ffff88806e15d960 FS: 00007fb63a06f6c0(0000) GS:ffff8881249e7000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000400000000140 CR3: 0000000061262000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 4c 8b b3 60 05 00 00 mov 0x560(%rbx),%r14 7: 4d 85 f6 test %r14,%r14 a: 0f 84 f6 02 00 00 je 0x306 10: e8 78 e1 a1 f6 call 0xf6a1e18d 15: 49 8d 7e 18 lea 0x18(%r14),%rdi 19: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 20: fc ff df 23: 48 89 fa mov %rdi,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2e: 0f 85 c7 1e 00 00 jne 0x1efb 34: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 3b: fc ff df 3e: 4d rex.WRB 3f: 8b .byte 0x8b