./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor310786694 <...> DUID 00:04:87:04:3c:41:30:05:a7:f7:d5:81:12:9d:2d:df:74:1f forked to background, child pid 4655 [ 36.181523][ T4656] 8021q: adding VLAN 0 to HW filter on device bond0 [ 36.208498][ T4656] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.171' (ECDSA) to the list of known hosts. execve("./syz-executor310786694", ["./syz-executor310786694"], 0x7ffe1f88c8f0 /* 10 vars */) = 0 brk(NULL) = 0x555555cef000 brk(0x555555cefc40) = 0x555555cefc40 arch_prctl(ARCH_SET_FS, 0x555555cef300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor310786694", 4096) = 27 brk(0x555555d10c40) = 0x555555d10c40 brk(0x555555d11000) = 0x555555d11000 mprotect(0x7f1106f66000, 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 socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE) = 3 socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 4 sendto(4, [{nlmsg_len=36, nlmsg_type=0x10 /* NLMSG_??? */, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK, nlmsg_seq=0, nlmsg_pid=0}, "\x03\x00\x00\x00\x0d\x00\x02\x00\x6e\x6c\x38\x30\x32\x31\x35\x34\x00\x00\x00\x00"], 36, 0, {sa_family=AF_NETLINK, nl_pid=0, nl_groups=00000000}, 12) = 36 recvfrom(4, [{nlmsg_len=784, nlmsg_type=nlctrl, nlmsg_flags=0, nlmsg_seq=0, nlmsg_pid=5082}, "\x01\x02\x00\x00\x0d\x00\x02\x00\x6e\x6c\x38\x30\x32\x31\x35\x34\x00\x00\x00\x00\x06\x00\x01\x00\x1d\x00\x00\x00\x08\x00\x03\x00\x01\x00\x00\x00\x08\x00\x04\x00\x00\x00\x00\x00\x08\x00\x05\x00\x2e\x00\x00\x00\x98\x02\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\x05\x00\x00\x00\x08\x00\x02\x00\x0e\x00\x00\x00\x14\x00\x03\x00"...], 4096, 0, NULL, NULL) = 784 recvfrom(4, [{nlmsg_len=36, nlmsg_type=NLMSG_ERROR, nlmsg_flags=NLM_F_CAPPED, nlmsg_seq=0, nlmsg_pid=5082}, {error=0, msg={nlmsg_len=36, nlmsg_type=nlctrl, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK, nlmsg_seq=0, nlmsg_pid=0}}], 4096, 0, NULL, NULL) = 36 access("/proc/net", R_OK) = 0 access("/proc/net/unix", R_OK) = 0 socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0) = 5 ioctl(5, SIOCGIFINDEX, {ifr_name="wpan0", ifr_ifindex=11}) = 0 close(5) = 0 sendto(4, [{nlmsg_len=36, nlmsg_type=nl802154, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK, nlmsg_seq=0, nlmsg_pid=0}, "\x0b\x00\x00\x00\x08\x00\x03\x00\x0b\x00\x00\x00\x06\x00\x0a\x00\xa0\xaa\x00\x00"], 36, 0, {sa_family=AF_NETLINK, nl_pid=0, nl_groups=00000000}, 12) = 36 recvfrom(4, [{nlmsg_len=36, nlmsg_type=NLMSG_ERROR, nlmsg_flags=NLM_F_CAPPED, nlmsg_seq=0, nlmsg_pid=5082}, {error=0, msg={nlmsg_len=36, nlmsg_type=nl802154, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK, nlmsg_seq=0, nlmsg_pid=0}}], 4096, 0, NULL, NULL) = 36 socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0) = 5 ioctl(5, SIOCGIFINDEX, {ifr_name="wpan0", ifr_ifindex=11}) = 0 close(5) = 0 sendto(3, [{nlmsg_len=44, nlmsg_type=0x10 /* NLMSG_??? */, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK, nlmsg_seq=0, nlmsg_pid=0}, "\x00\x00\x00\x00\x0b\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x0c\x00\x01\x00\x02\x00\xaa\xaa\xaa\xaa\xaa\xaa"], 44, 0, {sa_family=AF_NETLINK, nl_pid=0, nl_groups=00000000}, 12) = 44 recvfrom(3, [{nlmsg_len=36, nlmsg_type=NLMSG_ERROR, nlmsg_flags=NLM_F_CAPPED, nlmsg_seq=0, nlmsg_pid=5082}, {error=0, msg={nlmsg_len=44, nlmsg_type=RTM_NEWLINK, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK, nlmsg_seq=0, nlmsg_pid=0}}], 4096, 0, NULL, NULL) = 36 sendto(3, [{nlmsg_len=68, nlmsg_type=RTM_NEWLINK, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK|NLM_F_EXCL|NLM_F_CREATE, nlmsg_seq=0, nlmsg_pid=0}, {ifi_family=AF_UNSPEC, ifi_type=ARPHRD_NETROM, ifi_index=0, ifi_flags=0, ifi_change=0}, [[{nla_len=11, nla_type=IFLA_IFNAME}, "lowpan0"...], [{nla_len=16, nla_type=IFLA_LINKINFO}, [{nla_len=10, nla_type=IFLA_INFO_KIND}, "lowpan"...]], [{nla_len=8, nla_type=IFLA_LINK}, 11]]], 68, 0, {sa_family=AF_NETLINK, nl_pid=0, nl_groups=00000000}, 12) = 68 recvfrom(3, [{nlmsg_len=36, nlmsg_type=NLMSG_ERROR, nlmsg_flags=NLM_F_CAPPED, nlmsg_seq=0, nlmsg_pid=5082}, {error=0, msg={nlmsg_len=68, nlmsg_type=RTM_NEWLINK, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK|NLM_F_EXCL|NLM_F_CREATE, nlmsg_seq=0, nlmsg_pid=0}}], 4096, 0, NULL, NULL) = 36 socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0) = 5 ioctl(5, SIOCGIFINDEX, {ifr_name="wpan1", ifr_ifindex=12}) = 0 close(5) = 0 sendto(4, [{nlmsg_len=36, nlmsg_type=nl802154, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK, nlmsg_seq=0, nlmsg_pid=0}, "\x0b\x00\x00\x00\x08\x00\x03\x00\x0c\x00\x00\x00\x06\x00\x0a\x00\xa1\xaa\x00\x00"], 36, 0, {sa_family=AF_NETLINK, nl_pid=0, nl_groups=00000000}, 12) = 36 recvfrom(4, [{nlmsg_len=36, nlmsg_type=NLMSG_ERROR, nlmsg_flags=NLM_F_CAPPED, nlmsg_seq=0, nlmsg_pid=5082}, {error=0, msg={nlmsg_len=36, nlmsg_type=nl802154, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK, nlmsg_seq=0, nlmsg_pid=0}}], 4096, 0, NULL, NULL) = 36 socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0) = 5 ioctl(5, SIOCGIFINDEX, {ifr_name="wpan1", ifr_ifindex=12}) = 0 close(5) = 0 sendto(3, [{nlmsg_len=44, nlmsg_type=RTM_NEWLINK, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK, nlmsg_seq=0, nlmsg_pid=0}, {ifi_family=AF_UNSPEC, ifi_type=ARPHRD_NETROM, ifi_index=if_nametoindex("wpan1"), ifi_flags=IFF_UP, ifi_change=0x1}, [{nla_len=12, nla_type=IFLA_ADDRESS}, 02:01:aa:aa:aa:aa:aa]], 44, 0, {sa_family=AF_NETLINK, nl_pid=0, nl_groups=00000000}, 12) = 44 recvfrom(3, [{nlmsg_len=36, nlmsg_type=NLMSG_ERROR, nlmsg_flags=NLM_F_CAPPED, nlmsg_seq=0, nlmsg_pid=5082}, {error=0, msg={nlmsg_len=44, nlmsg_type=RTM_NEWLINK, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK, nlmsg_seq=0, nlmsg_pid=0}}], 4096, 0, NULL, NULL) = 36 close(3) = 0 close(4) = 0 socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 3 socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 4 sendto(4, [{nlmsg_len=36, nlmsg_type=0x10 /* NLMSG_??? */, nlmsg_flags=NLM_F_REQUEST|NLM_F_ACK, nlmsg_seq=0, nlmsg_pid=0}, "\x03\x00\x00\x00\x0d\x00\x02\x00\x6e\x6c\x38\x30\x32\x31\x35\x34\x00\x00\x00\x00"], 36, 0, {sa_family=AF_NETLINK, nl_pid=0, nl_groups=00000000}, 12) = 36 recvfrom(4, [{nlmsg_len=784, nlmsg_type=nlctrl, nlmsg_flags=0, nlmsg_seq=0, nlmsg_pid=5082}, "\x01\x02\x00\x00\x0d\x00\x02\x00\x6e\x6c\x38\x30\x32\x31\x35\x34\x00\x00\x00\x00\x06\x00\x01\x00\x1d\x00\x00\x00\x08\x00\x03\x00\x01\x00\x00\x00\x08\x00\x04\x00\x00\x00\x00\x00\x08\x00\x05\x00\x2e\x00\x00\x00\x98\x02\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\x05\x00\x00\x00\x08\x00\x02\x00\x0e\x00\x00\x00\x14\x00\x03\x00"...], 4096, 0, NULL, NULL) = 784 recvfrom(4, [{nlmsg_len=36, nlmsg_type=NLMSG_ERROR, nlmsg_flags=NLM_F_CAPPED, nlmsg_seq=0, nlmsg_pid=5082}, {error=0, msg={nlmsg_len=36, 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 syzkaller login: [ 60.505349][ T5082] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN [ 60.517283][ T5082] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] [ 60.525813][ T5082] CPU: 0 PID: 5082 Comm: syz-executor310 Not tainted 6.2.0-syzkaller-05303-g724337be7f21 #0 [ 60.536331][ T5082] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023 [ 60.547092][ T5082] RIP: 0010:nl802154_trigger_scan+0x132/0xc90 [ 60.554067][ T5082] Code: 48 c1 ea 03 80 3c 02 00 0f 85 3f 0a 00 00 48 8b ad f8 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d 7d 04 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 d0 07 00 00 [ 60.573855][ T5082] RSP: 0018:ffffc90003b0f568 EFLAGS: 00010247 [ 60.580005][ T5082] RAX: dffffc0000000000 RBX: ffffc90003b0f5d8 RCX: 0000000000000000 [ 60.588058][ T5082] RDX: 0000000000000000 RSI: ffffffff89cbb0c1 RDI: 0000000000000004 [ 60.596119][ T5082] RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000001 [ 60.604428][ T5082] R10: 0000000000000000 R11: 0000000000000000 R12: ffff888146ddcc90 [ 60.612651][ T5082] R13: ffff888146de4000 R14: ffff888146de40a0 R15: ffffc90003b0f5f8 [ 60.620615][ T5082] FS: 0000555555cef300(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 60.630358][ T5082] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 60.637548][ T5082] CR2: 0000000000668100 CR3: 0000000021605000 CR4: 00000000003506f0 [ 60.645611][ T5082] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 60.653672][ T5082] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 60.662356][ T5082] Call Trace: [ 60.665624][ T5082] [ 60.668564][ T5082] genl_family_rcv_msg_doit.isra.0+0x1e6/0x2d0 [ 60.674739][ T5082] ? genl_start+0x660/0x660 [ 60.679253][ T5082] ? ns_capable+0xe0/0x110 [ 60.683693][ T5082] genl_rcv_msg+0x4ff/0x7e0 [ 60.688472][ T5082] ? genl_family_rcv_msg_doit.isra.0+0x2d0/0x2d0 [ 60.694920][ T5082] ? nl802154_wpan_phy_netns+0x2c0/0x2c0 [ 60.701428][ T5082] ? nl802154_set_tx_power+0x620/0x620 [ 60.706892][ T5082] ? nl802154_pre_doit+0xd60/0xd60 [ 60.712038][ T5082] netlink_rcv_skb+0x165/0x440 [ 60.716834][ T5082] ? genl_family_rcv_msg_doit.isra.0+0x2d0/0x2d0 [ 60.723558][ T5082] ? netlink_ack+0x1360/0x1360 [ 60.728769][ T5082] genl_rcv+0x28/0x40 [ 60.732753][ T5082] netlink_unicast+0x547/0x7f0 [ 60.737551][ T5082] ? netlink_attachskb+0x890/0x890 [ 60.742709][ T5082] ? __virt_addr_valid+0x61/0x2e0 [ 60.747817][ T5082] ? __phys_addr_symbol+0x30/0x70 [ 60.752855][ T5082] ? __check_object_size+0x333/0x6e0 [ 60.758541][ T5082] netlink_sendmsg+0x925/0xe30 [ 60.763316][ T5082] ? netlink_unicast+0x7f0/0x7f0 [ 60.768259][ T5082] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 60.773630][ T5082] ? netlink_unicast+0x7f0/0x7f0 [ 60.778565][ T5082] sock_sendmsg+0xde/0x190 [ 60.783006][ T5082] ____sys_sendmsg+0x71c/0x900 [ 60.787763][ T5082] ? copy_msghdr_from_user+0xfc/0x150 [ 60.793132][ T5082] ? kernel_sendmsg+0x50/0x50 [ 60.797803][ T5082] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 60.803795][ T5082] ___sys_sendmsg+0x110/0x1b0 [ 60.808501][ T5082] ? do_recvmmsg+0x6e0/0x6e0 [ 60.813443][ T5082] ? lock_release+0x780/0x780 [ 60.818120][ T5082] ? ptrace_stop.part.0+0x4a3/0x8e0 [ 60.823334][ T5082] ? do_raw_spin_lock+0x124/0x2b0 [ 60.828470][ T5082] ? spin_bug+0x1c0/0x1c0 [ 60.832804][ T5082] ? __fget_light+0x20a/0x270 [ 60.839489][ T5082] __sys_sendmsg+0xf7/0x1c0 [ 60.843999][ T5082] ? __sys_sendmsg_sock+0x40/0x40 [ 60.849203][ T5082] ? lockdep_hardirqs_on+0x7d/0x100 [ 60.854587][ T5082] ? _raw_spin_unlock_irq+0x2e/0x50 [ 60.859784][ T5082] ? ptrace_notify+0xfe/0x140 [ 60.864456][ T5082] do_syscall_64+0x39/0xb0 [ 60.868874][ T5082] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 60.874791][ T5082] RIP: 0033:0x7f1106ef3e69 [ 60.879213][ T5082] Code: 28 c3 e8 5a 14 00 00 66 2e 0f 1f 84 00 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 c0 ff ff ff f7 d8 64 89 01 48 [ 60.899335][ T5082] RSP: 002b:00007ffeed5601b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 60.907882][ T5082] RAX: ffffffffffffffda RBX: 00007f1106f6c380 RCX: 00007f1106ef3e69 [ 60.916030][ T5082] RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000003 [ 60.924437][ T5082] RBP: 0000000000000001 R08: 0000000000000000 R09: 001d00000000000c [ 60.933058][ T5082] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 60.941378][ T5082] R13: 0000000000000003 R14: 00007ffeed5601d7 R15: 00007ffeed5601da [ 60.949625][ T5082] [ 60.952647][ T5082] Modules linked in: [ 60.957450][ T5082] ---[ end trace 0000000000000000 ]--- [ 60.963135][ T5082] RIP: 0010:nl802154_trigger_scan+0x132/0xc90 [ 60.969237][ T5082] Code: 48 c1 ea 03 80 3c 02 00 0f 85 3f 0a 00 00 48 8b ad f8 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d 7d 04 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 d0 07 00 00 [ 60.989544][ T5082] RSP: 0018:ffffc90003b0f568 EFLAGS: 00010247 [ 60.998724][ T5082] RAX: dffffc0000000000 RBX: ffffc90003b0f5d8 RCX: 0000000000000000 [ 61.006909][ T5082] RDX: 0000000000000000 RSI: ffffffff89cbb0c1 RDI: 0000000000000004 [ 61.015219][ T5082] RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000001 [ 61.023429][ T5082] R10: 0000000000000000 R11: 0000000000000000 R12: ffff888146ddcc90 [ 61.031471][ T5082] R13: ffff888146de4000 R14: ffff888146de40a0 R15: ffffc90003b0f5f8 [ 61.040361][ T5082] FS: 0000555555cef300(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 61.050282][ T5082] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 61.057187][ T5082] CR2: 00005622f6ec04c8 CR3: 0000000021605000 CR4: 00000000003506e0 [ 61.065215][ T5082] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 61.073575][ T5082] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 61.081592][ T5082] Kernel panic - not syncing: Fatal exception [ 61.087831][ T5082] Kernel Offset: disabled [ 61.092855][ T5082] Rebooting in 86400 seconds..