./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4255870995 <...> Warning: Permanently added '10.128.1.20' (ED25519) to the list of known hosts. execve("./syz-executor4255870995", ["./syz-executor4255870995"], 0x7fffd84e4820 /* 10 vars */) = 0 brk(NULL) = 0x55557b87c000 brk(0x55557b87cd00) = 0x55557b87cd00 arch_prctl(ARCH_SET_FS, 0x55557b87c380) = 0 set_tid_address(0x55557b87c650) = 5231 set_robust_list(0x55557b87c660, 24) = 0 rseq(0x55557b87cca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor4255870995", 4096) = 28 getrandom("\xed\xef\x04\xb0\xed\x4e\x98\xc3", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55557b87cd00 brk(0x55557b89dd00) = 0x55557b89dd00 brk(0x55557b89e000) = 0x55557b89e000 mprotect(0x7f8a14127000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 write(1, "executing program\n", 18executing program ) = 18 socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 3 socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 4 sendto(4, [{nlmsg_len=32, nlmsg_type=0x10 /* NLMSG_??? */, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK, nlmsg_seq=0, nlmsg_pid=0}, "\x03\x00\x00\x00\x0c\x00\x02\x00\x65\x74\x68\x74\x6f\x6f\x6c\x00"], 32, 0, {sa_family=AF_NETLINK, nl_pid=0, nl_groups=00000000}, 12) = 32 recvfrom(4, [{nlmsg_len=996, nlmsg_type=nlctrl, nlmsg_flags=0, nlmsg_seq=0, nlmsg_pid=5231}, "\x01\x02\x00\x00\x0c\x00\x02\x00\x65\x74\x68\x74\x6f\x6f\x6c\x00\x06\x00\x01\x00\x16\x00\x00\x00\x08\x00\x03\x00\x01\x00\x00\x00\x08\x00\x04\x00\x00\x00\x00\x00\x08\x00\x05\x00\x00\x00\x00\x00\x88\x03\x06\x00\x14\x00\x01\x00\x08\x00\x01\x00\x01\x00\x00\x00\x08\x00\x02\x00\x0e\x00\x00\x00\x14\x00\x02\x00\x08\x00\x01\x00\x02\x00\x00\x00\x08\x00\x02\x00\x0e\x00\x00\x00\x14\x00\x03\x00\x08\x00\x01\x00"...], 4096, 0, NULL, NULL) = 996 recvfrom(4, [{nlmsg_len=36, nlmsg_type=NLMSG_ERROR, nlmsg_flags=NLM_F_CAPPED, nlmsg_seq=0, nlmsg_pid=5231}, {error=0, msg={nlmsg_len=32, nlmsg_type=nlctrl, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK, nlmsg_seq=0, nlmsg_pid=0}}], 4096, 0, NULL, NULL) = 36 close(4) = 0 [ 57.891940][ T5231] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN PTI [ 57.904593][ T5231] KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f] [ 57.913101][ T5231] CPU: 0 UID: 0 PID: 5231 Comm: syz-executor425 Not tainted 6.11.0-rc6-syzkaller-01235-ga9b1fab3b69f #0 [ 57.924183][ T5231] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 [ 57.934220][ T5231] RIP: 0010:ethnl_phy_doit+0x2f0/0x870 [ 57.939689][ T5231] Code: 00 00 fc ff df 80 3c 08 00 74 05 e8 5a 91 2b f8 48 8b 5c 24 78 48 83 c3 18 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 df e8 32 91 2b f8 4c 8b 2b 4d 85 ed 74 25 [ 57.959281][ T5231] RSP: 0018:ffffc90002de7360 EFLAGS: 00010206 [ 57.965350][ T5231] RAX: 0000000000000003 RBX: 0000000000000018 RCX: dffffc0000000000 [ 57.973333][ T5231] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc90002de73d8 [ 57.981283][ T5231] RBP: ffffc90002de7470 R08: ffffffff89cb85e4 R09: 1ffffffff1f9194c [ 57.989411][ T5231] R10: dffffc0000000000 R11: fffffbfff1f9194d R12: 0000000000000000 [ 57.997367][ T5231] R13: 1ffff11004fce1bd R14: ffffc90002de7740 R15: ffffc90002de73c0 [ 58.005577][ T5231] FS: 000055557b87c380(0000) GS:ffff8880b8800000(0000) knlGS:0000000000000000 [ 58.014510][ T5231] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 58.021071][ T5231] CR2: 00000000355e7018 CR3: 0000000024632000 CR4: 00000000003506f0 [ 58.029021][ T5231] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 58.037077][ T5231] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 58.045025][ T5231] Call Trace: [ 58.048291][ T5231] [ 58.051203][ T5231] ? __die_body+0x88/0xe0 [ 58.055541][ T5231] ? die_addr+0x108/0x140 [ 58.059851][ T5231] ? exc_general_protection+0x3dd/0x5d0 [ 58.065387][ T5231] ? asm_exc_general_protection+0x26/0x30 [ 58.071107][ T5231] ? ethnl_req_get_phydev+0x94/0x220 [ 58.076377][ T5231] ? ethnl_phy_doit+0x2f0/0x870 [ 58.081233][ T5231] ? __pfx_ethnl_phy_doit+0x10/0x10 [ 58.086412][ T5231] ? genl_family_rcv_msg_attrs_parse+0x1d1/0x290 [ 58.092725][ T5231] genl_rcv_msg+0xb14/0xec0 [ 58.097210][ T5231] ? mark_lock+0x9a/0x350 [ 58.101523][ T5231] ? __pfx_genl_rcv_msg+0x10/0x10 [ 58.106548][ T5231] ? __pfx_lock_acquire+0x10/0x10 [ 58.111552][ T5231] ? __pfx_ethnl_phy_doit+0x10/0x10 [ 58.116733][ T5231] ? __pfx___might_resched+0x10/0x10 [ 58.122039][ T5231] netlink_rcv_skb+0x1e3/0x430 [ 58.126976][ T5231] ? __pfx_genl_rcv_msg+0x10/0x10 [ 58.131979][ T5231] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 58.137340][ T5231] genl_rcv+0x28/0x40 [ 58.141342][ T5231] netlink_unicast+0x7f6/0x990 [ 58.146092][ T5231] ? __pfx_netlink_unicast+0x10/0x10 [ 58.151544][ T5231] ? __virt_addr_valid+0x183/0x530 [ 58.157506][ T5231] ? __check_object_size+0x49c/0x900 [ 58.162776][ T5231] ? bpf_lsm_netlink_send+0x9/0x10 [ 58.167906][ T5231] netlink_sendmsg+0x8e4/0xcb0 [ 58.173001][ T5231] ? __pfx_netlink_sendmsg+0x10/0x10 [ 58.178267][ T5231] ? __import_iovec+0x536/0x820 [ 58.183123][ T5231] ? aa_sock_msg_perm+0x91/0x160 [ 58.188056][ T5231] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 58.193407][ T5231] ? security_socket_sendmsg+0x87/0xb0 [ 58.198872][ T5231] ? __pfx_netlink_sendmsg+0x10/0x10 [ 58.204132][ T5231] __sock_sendmsg+0x221/0x270 [ 58.208798][ T5231] ____sys_sendmsg+0x525/0x7d0 [ 58.213547][ T5231] ? __pfx_____sys_sendmsg+0x10/0x10 [ 58.218815][ T5231] ? do_raw_spin_lock+0x14f/0x370 [ 58.223822][ T5231] __sys_sendmsg+0x2b0/0x3a0 [ 58.228396][ T5231] ? __pfx___sys_sendmsg+0x10/0x10 [ 58.233491][ T5231] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 58.239797][ T5231] ? _raw_spin_unlock_irq+0x2e/0x50 [ 58.244989][ T5231] ? ptrace_notify+0x279/0x380 [ 58.250058][ T5231] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 58.256391][ T5231] ? do_syscall_64+0x100/0x230 [ 58.261148][ T5231] do_syscall_64+0xf3/0x230 [ 58.265655][ T5231] ? clear_bhb_loop+0x35/0x90 [ 58.270332][ T5231] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 58.276219][ T5231] RIP: 0033:0x7f8a140b5219 [ 58.280633][ T5231] Code: 48 83 c4 28 c3 e8 e7 18 00 00 0f 1f 80 00 00 00 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 b8 ff ff ff f7 d8 64 89 01 48 [ 58.300233][ T5231] RSP: 002b:00007ffc043fab58 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 58.308656][ T5231] RAX: ffffffffffffffda RBX: 00007ffc043fad28 RCX: 00007f8a140b5219 [ 58.316615][ T5231] RDX: 0000000000000000 RSI: 0000000020000300 RDI: 0000000000000003 [ 58.324652][ T5231] RBP: 00007f8a14127610 R08: 0000000000000000 R09: 00007ffc043fad28 [ 58.332601][ T5231] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 58.340558][ T5231] R13: 00007ffc043fad18 R14: 0000000000000001 R15: 0000000000000001 [ 58.348531][ T5231] [ 58.351534][ T5231] Modules linked in: [ 58.355989][ T5231] ---[ end trace 0000000000000000 ]--- [ 58.361464][ T5231] RIP: 0010:ethnl_phy_doit+0x2f0/0x870 [ 58.367105][ T5231] Code: 00 00 fc ff df 80 3c 08 00 74 05 e8 5a 91 2b f8 48 8b 5c 24 78 48 83 c3 18 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 df e8 32 91 2b f8 4c 8b 2b 4d 85 ed 74 25 [ 58.387209][ T5231] RSP: 0018:ffffc90002de7360 EFLAGS: 00010206 [ 58.393288][ T5231] RAX: 0000000000000003 RBX: 0000000000000018 RCX: dffffc0000000000 [ 58.401289][ T5231] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc90002de73d8 [ 58.409313][ T5231] RBP: ffffc90002de7470 R08: ffffffff89cb85e4 R09: 1ffffffff1f9194c [ 58.417352][ T5231] R10: dffffc0000000000 R11: fffffbfff1f9194d R12: 0000000000000000 [ 58.425357][ T5231] R13: 1ffff11004fce1bd R14: ffffc90002de7740 R15: ffffc90002de73c0 [ 58.433312][ T5231] FS: 000055557b87c380(0000) GS:ffff8880b8800000(0000) knlGS:0000000000000000 [ 58.442332][ T5231] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 58.449555][ T5231] CR2: 00000000355e7018 CR3: 0000000024632000 CR4: 00000000003506f0 [ 58.457624][ T5231] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 58.465645][ T5231] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 58.473625][ T5231] Kernel panic - not syncing: Fatal exception [ 58.479949][ T5231] Kernel Offset: disabled [ 58.484259][ T5231] Rebooting in 86400 seconds..