BUG: unable to handle page fault for address: 0000000000016018 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 10e6c1067 P4D 10e6c1067 PUD 0 Oops: Oops: 0000 [#1] PREEMPT SMP NOPTI CPU: 0 UID: 0 PID: 3715 Comm: syz.3.17 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 RIP: 0010:smc_diag_msg_common_fill net/smc/smc_diag.c:44 [inline] RIP: 0010:__smc_diag_dump.constprop.0+0x108/0x780 net/smc/smc_diag.c:89 Code: 89 e8 29 f8 8d 48 50 31 c0 c1 e9 03 f3 48 ab 48 89 df 0f b7 43 10 88 45 10 e8 b4 24 b3 ff 48 8b 83 f8 04 00 00 48 85 c0 74 65 <48> 8b 40 18 0f b7 40 0e 66 c1 c0 08 66 89 45 14 48 8b 83 f8 04 00 RSP: 0018:ffffc900034077f8 EFLAGS: 00010206 RAX: 0000000000016000 RBX: ffff88810f930000 RCX: 0000000000000000 RDX: 0000000000000002 RSI: ffffffff8328dd82 RDI: 00000000ffffffff RBP: ffff888110258000 R08: 0000000000000040 R09: 0000000000000000 R10: ffff888110258050 R11: fefefefefefefeff R12: ffff8881022a4c00 R13: ffff888107321690 R14: 0000000000000000 R15: ffff888109d8dd80 FS: 00007fc2e523d6c0(0000) GS:ffff88813bc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000016018 CR3: 000000010573a000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: smc_diag_dump_proto+0xc8/0xe0 net/smc/smc_diag.c:217 smc_diag_dump+0x20/0x50 net/smc/smc_diag.c:234 netlink_dump+0x1c4/0x480 net/netlink/af_netlink.c:2325 __netlink_dump_start+0x222/0x350 net/netlink/af_netlink.c:2440 netlink_dump_start include/linux/netlink.h:339 [inline] smc_diag_handler_dump+0x7e/0x90 net/smc/smc_diag.c:251 __sock_diag_cmd net/core/sock_diag.c:249 [inline] sock_diag_rcv_msg+0x153/0x1a0 net/core/sock_diag.c:287 netlink_rcv_skb+0x53/0x100 net/netlink/af_netlink.c:2550 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline] netlink_unicast+0x2a2/0x3e0 net/netlink/af_netlink.c:1357 netlink_sendmsg+0x218/0x480 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] ____sys_sendmsg+0x361/0x3a0 net/socket.c:2597 ___sys_sendmsg+0x95/0xe0 net/socket.c:2651 __sys_sendmsg+0x75/0xc0 net/socket.c:2680 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x6d/0x170 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fc2e438eba9 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:00007fc2e523d038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fc2e45d6090 RCX: 00007fc2e438eba9 RDX: 0000000000000000 RSI: 0000200000000140 RDI: 0000000000000003 RBP: 00007fc2e4411e19 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fc2e45d6128 R14: 00007fc2e45d6090 R15: 00007ffe049e1828 Modules linked in: CR2: 0000000000016018 ---[ end trace 0000000000000000 ]--- RIP: 0010:smc_diag_msg_common_fill net/smc/smc_diag.c:44 [inline] RIP: 0010:__smc_diag_dump.constprop.0+0x108/0x780 net/smc/smc_diag.c:89 Code: 89 e8 29 f8 8d 48 50 31 c0 c1 e9 03 f3 48 ab 48 89 df 0f b7 43 10 88 45 10 e8 b4 24 b3 ff 48 8b 83 f8 04 00 00 48 85 c0 74 65 <48> 8b 40 18 0f b7 40 0e 66 c1 c0 08 66 89 45 14 48 8b 83 f8 04 00 RSP: 0018:ffffc900034077f8 EFLAGS: 00010206 RAX: 0000000000016000 RBX: ffff88810f930000 RCX: 0000000000000000 RDX: 0000000000000002 RSI: ffffffff8328dd82 RDI: 00000000ffffffff RBP: ffff888110258000 R08: 0000000000000040 R09: 0000000000000000 R10: ffff888110258050 R11: fefefefefefefeff R12: ffff8881022a4c00 R13: ffff888107321690 R14: 0000000000000000 R15: ffff888109d8dd80 FS: 00007fc2e523d6c0(0000) GS:ffff88813bc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000016018 CR3: 000000010573a000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 89 e8 mov %ebp,%eax 2: 29 f8 sub %edi,%eax 4: 8d 48 50 lea 0x50(%rax),%ecx 7: 31 c0 xor %eax,%eax 9: c1 e9 03 shr $0x3,%ecx c: f3 48 ab rep stos %rax,%es:(%rdi) f: 48 89 df mov %rbx,%rdi 12: 0f b7 43 10 movzwl 0x10(%rbx),%eax 16: 88 45 10 mov %al,0x10(%rbp) 19: e8 b4 24 b3 ff call 0xffb324d2 1e: 48 8b 83 f8 04 00 00 mov 0x4f8(%rbx),%rax 25: 48 85 c0 test %rax,%rax 28: 74 65 je 0x8f * 2a: 48 8b 40 18 mov 0x18(%rax),%rax <-- trapping instruction 2e: 0f b7 40 0e movzwl 0xe(%rax),%eax 32: 66 c1 c0 08 rol $0x8,%ax 36: 66 89 45 14 mov %ax,0x14(%rbp) 3a: 48 rex.W 3b: 8b .byte 0x8b 3c: 83 f8 04 cmp $0x4,%eax