Oops: general protection fault, probably for non-canonical address 0xdffffc00000a2403: 0000 [#1] PREEMPT SMP KASAN NOPTI KASAN: probably user-memory-access in range [0x0000000000512018-0x000000000051201f] CPU: 0 UID: 0 PID: 9319 Comm: syz.4.889 Not tainted 6.14.0-rc5-syzkaller-00109-g0f52fd4f67c6 #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.constprop.0+0x3de/0x23d0 net/smc/smc_diag.c:89 Code: 4c 8b b3 58 05 00 00 4d 85 f6 0f 84 f6 02 00 00 e8 17 de b1 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 eb 1d 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b RSP: 0018:ffffc90002f57170 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: ffff88807b399800 RCX: ffffffff894256c4 RDX: 00000000000a2403 RSI: ffffffff8b0813d9 RDI: 0000000000512018 RBP: ffff88801e2d8000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000001 R11: 0000000000003310 R12: ffff8880787fb5e0 R13: 0000000000000000 R14: 0000000000512000 R15: ffff88807b399d58 FS: 00007fd1c2b566c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000040000000e000 CR3: 00000000522ee000 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+0x53c/0xd00 net/netlink/af_netlink.c:2308 __netlink_dump_start+0x6ca/0x970 net/netlink/af_netlink.c:2423 netlink_dump_start include/linux/netlink.h:340 [inline] smc_diag_handler_dump+0x1fb/0x240 net/smc/smc_diag.c:251 __sock_diag_cmd net/core/sock_diag.c:249 [inline] sock_diag_rcv_msg+0x437/0x790 net/core/sock_diag.c:287 netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2533 netlink_unicast_kernel net/netlink/af_netlink.c:1312 [inline] netlink_unicast+0x53c/0x7f0 net/netlink/af_netlink.c:1338 netlink_sendmsg+0x8b8/0xd70 net/netlink/af_netlink.c:1882 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg net/socket.c:733 [inline] ____sys_sendmsg+0xaaf/0xc90 net/socket.c:2573 ___sys_sendmsg+0x135/0x1e0 net/socket.c:2627 __sys_sendmsg+0x16e/0x220 net/socket.c:2659 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fd1c1d8d169 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:00007fd1c2b56038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fd1c1fa6160 RCX: 00007fd1c1d8d169 RDX: 0000000000000600 RSI: 0000400000000540 RDI: 0000000000000006 RBP: 00007fd1c1e0e2a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fd1c1fa6160 R15: 00007ffd981479e8 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+0x3de/0x23d0 net/smc/smc_diag.c:89 Code: 4c 8b b3 58 05 00 00 4d 85 f6 0f 84 f6 02 00 00 e8 17 de b1 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 eb 1d 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b RSP: 0018:ffffc90002f57170 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: ffff88807b399800 RCX: ffffffff894256c4 RDX: 00000000000a2403 RSI: ffffffff8b0813d9 RDI: 0000000000512018 RBP: ffff88801e2d8000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000001 R11: 0000000000003310 R12: ffff8880787fb5e0 R13: 0000000000000000 R14: 0000000000512000 R15: ffff88807b399d58 FS: 00007fd1c2b566c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000040000000e000 CR3: 00000000522ee000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 4c 8b b3 58 05 00 00 mov 0x558(%rbx),%r14 7: 4d 85 f6 test %r14,%r14 a: 0f 84 f6 02 00 00 je 0x306 10: e8 17 de b1 f6 call 0xf6b1de2c 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 eb 1d 00 00 jne 0x1e1f 34: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 3b: fc ff df 3e: 4d rex.WRB 3f: 8b .byte 0x8b