./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3993031489
<...>
DUID 00:04:b0:7e:30:9f:4d:11:81:da:bf:2d:3d:77:4c:17:c1:ba
forked to background, child pid 3185
[ 26.332940][ T3186] 8021q: adding VLAN 0 to HW filter on device bond0
[ 26.348228][ T3186] eql: remember to turn off Van-Jacobson compression on your slave devices
Starting sshd: OK
syzkaller
Warning: Permanently added '10.128.0.109' (ECDSA) to the list of known hosts.
execve("./syz-executor3993031489", ["./syz-executor3993031489"], 0x7ffcb38bb8c0 /* 10 vars */) = 0
brk(NULL) = 0x5555565e8000
brk(0x5555565e8c40) = 0x5555565e8c40
arch_prctl(ARCH_SET_FS, 0x5555565e8300) = 0
uname({sysname="Linux", nodename="syzkaller", ...}) = 0
readlink("/proc/self/exe", "/root/syz-executor3993031489", 4096) = 28
brk(0x555556609c40) = 0x555556609c40
brk(0x55555660a000) = 0x55555660a000
mprotect(0x7fc67d075000, 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_DGRAM, NETLINK_ROUTE) = 3
bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_SOCKET_FILTER, insn_cnt=5, insns=0x200003c0, license="GPL", log_level=0, log_size=0, log_buf=NULL, kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_INGRESS}, 72) = 4
setsockopt(3, SOL_SOCKET, SO_ATTACH_BPF, [4], 4) = 0
syzkaller login: [ 49.443563][ T3607] netlink: 'syz-executor399': attribute type 21 has an invalid length.
[ 49.452106][ T3607] netlink: 168 bytes leftover after parsing attributes in process `syz-executor399'.
[ 49.475677][ T3607] ------------[ cut here ]------------
[ 49.481217][ T3607] WARNING: CPU: 1 PID: 3607 at include/linux/skbuff.h:2785 bpf_internal_load_pointer_neg_helper+0x1b1/0x1c0
[ 49.492809][ T3607] Modules linked in:
[ 49.496738][ T3607] CPU: 1 PID: 3607 Comm: syz-executor399 Not tainted 5.19.0-rc4-syzkaller-00754-g04740c53cac4 #0
[ 49.507277][ T3607] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022
[ 49.517363][ T3607] RIP: 0010:bpf_internal_load_pointer_neg_helper+0x1b1/0x1c0
[ 49.524729][ T3607] Code: ff ff 45 31 f6 e9 5a ff ff ff e8 aa 27 40 00 e9 3b ff ff ff e8 90 27 40 00 e9 df fe ff ff e8 86 27 40 00 eb 9e e8 2f 2c f3 ff <0f> 0b eb b1 e8 96 27 40 00 e9 79 fe ff ff 90 41 57 41 56 41 55 41
[ 49.544382][ T3607] RSP: 0018:ffffc9000308f4f8 EFLAGS: 00010293
[ 49.550534][ T3607] RAX: 0000000000000000 RBX: ffffffffffe10002 RCX: 0000000000000000
[ 49.558549][ T3607] RDX: ffff88807e01bb00 RSI: ffffffff81873f21 RDI: 0000000000000003
[ 49.566549][ T3607] RBP: ffff88807f339140 R08: 0000000000000003 R09: 000000000000ffff
[ 49.574510][ T3607] R10: 000000000000ffff R11: 0000000000000001 R12: 0000000000000002
[ 49.582658][ T3607] R13: ffff88802150b000 R14: 000000000000ffff R15: 0000000000000000
[ 49.590709][ T3607] FS: 00005555565e8300(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
[ 49.599699][ T3607] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 49.606381][ T3607] CR2: 00007efe80db9300 CR3: 000000007f358000 CR4: 00000000003506e0
[ 49.614375][ T3607] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 49.622421][ T3607] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 49.630431][ T3607] Call Trace:
[ 49.633699][ T3607]
[ 49.636667][ T3607] bpf_skb_load_helper_16_no_cache+0x205/0x2b0
[ 49.642856][ T3607] ? bpf_skb_load_helper_16+0x230/0x230
[ 49.648455][ T3607] bpf_prog_e4a2190aaec26884+0x41/0x4c
[ 49.653925][ T3607] sk_filter_trim_cap+0x27c/0x9a0
[ 49.658999][ T3607] ? bpf_xdp_redirect+0x160/0x160
[ 49.664045][ T3607] ? netlink_lookup+0x25e/0x470
[ 49.668953][ T3607] ? __rhashtable_lookup.constprop.0+0x5e0/0x5e0
[ 49.675320][ T3607] ? is_vmalloc_addr+0x28/0x40
[ 49.680082][ T3607] netlink_unicast+0x1bf/0x7f0
[ 49.684841][ T3607] ? netlink_attachskb+0x880/0x880
[ 49.689995][ T3607] ? __build_skb_around+0x274/0x340
[ 49.695401][ T3607] ? memset+0x20/0x40
[ 49.699408][ T3607] ? __nlmsg_put+0x155/0x1c0
[ 49.703997][ T3607] netlink_ack+0x5cd/0xa80
[ 49.708461][ T3607] ? netlink_sendmsg+0xe10/0xe10
[ 49.713417][ T3607] netlink_rcv_skb+0x33d/0x420
[ 49.718227][ T3607] ? rtnl_fdb_dump+0x9a0/0x9a0
[ 49.723012][ T3607] ? netlink_ack+0xa80/0xa80
[ 49.727665][ T3607] ? netlink_deliver_tap+0x1a2/0xc40
[ 49.732979][ T3607] ? netlink_deliver_tap+0x1b1/0xc40
[ 49.738345][ T3607] netlink_unicast+0x543/0x7f0
[ 49.743139][ T3607] ? netlink_attachskb+0x880/0x880
[ 49.748312][ T3607] ? __virt_addr_valid+0x5d/0x2d0
[ 49.753364][ T3607] ? __phys_addr_symbol+0x2c/0x70
[ 49.758432][ T3607] ? __check_object_size+0x2de/0x700
[ 49.763736][ T3607] netlink_sendmsg+0x917/0xe10
[ 49.768550][ T3607] ? netlink_unicast+0x7f0/0x7f0
[ 49.773501][ T3607] ? bpf_lsm_socket_sendmsg+0x5/0x10
[ 49.778847][ T3607] ? netlink_unicast+0x7f0/0x7f0
[ 49.783804][ T3607] sock_sendmsg+0xcf/0x120
[ 49.788292][ T3607] ____sys_sendmsg+0x6eb/0x810
[ 49.793080][ T3607] ? kernel_sendmsg+0x50/0x50
[ 49.797803][ T3607] ? do_recvmmsg+0x6d0/0x6d0
[ 49.802477][ T3607] ? lockdep_hardirqs_on_prepare+0x400/0x400
[ 49.808520][ T3607] ? lockdep_hardirqs_on+0x79/0x100
[ 49.813739][ T3607] ___sys_sendmsg+0xf3/0x170
[ 49.818391][ T3607] ? sendmsg_copy_msghdr+0x160/0x160
[ 49.823699][ T3607] ? lock_release+0x780/0x780
[ 49.828421][ T3607] ? ptrace_stop.part.0+0x5ec/0xa80
[ 49.833633][ T3607] ? do_raw_spin_lock+0x120/0x2a0
[ 49.838700][ T3607] ? rwlock_bug.part.0+0x90/0x90
[ 49.843649][ T3607] ? _raw_spin_lock_irq+0x41/0x50
[ 49.848743][ T3607] ? __fget_light+0x20a/0x270
[ 49.853441][ T3607] __x64_sys_sendmsg+0x132/0x220
[ 49.858443][ T3607] ? __sys_sendmsg+0x1b0/0x1b0
[ 49.863249][ T3607] ? _raw_spin_unlock_irq+0x2a/0x40
[ 49.868520][ T3607] ? ptrace_notify+0xfa/0x140
[ 49.873232][ T3607] do_syscall_64+0x35/0xb0
[ 49.877709][ T3607] entry_SYSCALL_64_after_hwframe+0x46/0xb0
[ 49.883616][ T3607] RIP: 0033:0x7fc67d008e09
[ 49.888084][ T3607] Code: 28 c3 e8 2a 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
[ 49.907738][ T3607] RSP: 002b:00007fff98907f78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 49.916188][ T3607] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc67d008e09
[ 49.924173][ T3607] RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000003
[ 49.932186][ T3607] RBP: 00007fc67cfccfb0 R08: 0000000000000000 R09: 0000000000000000
[ 49.940202][ T3607] R10: 0000000000000004 R11: 0000000000000246 R12: 00007fc67cfcd040
[ 49.948211][ T3607] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[ 49.956280][ T3607]
[ 49.959294][ T3607] Kernel panic - not syncing: panic_on_warn set ...
[ 49.965881][ T3607] CPU: 1 PID: 3607 Comm: syz-executor399 Not tainted 5.19.0-rc4-syzkaller-00754-g04740c53cac4 #0
[ 49.976381][ T3607] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022
[ 49.986427][ T3607] Call Trace:
[ 49.989748][ T3607]
[ 49.992767][ T3607] dump_stack_lvl+0xcd/0x134
[ 49.997354][ T3607] panic+0x2d7/0x636
[ 50.001239][ T3607] ? panic_print_sys_info.part.0+0x10b/0x10b
[ 50.007227][ T3607] ? __warn.cold+0x1d1/0x2c5
[ 50.011811][ T3607] ? bpf_internal_load_pointer_neg_helper+0x1b1/0x1c0
[ 50.018573][ T3607] __warn.cold+0x1e2/0x2c5
[ 50.022996][ T3607] ? bpf_internal_load_pointer_neg_helper+0x1b1/0x1c0
[ 50.029768][ T3607] report_bug+0x1bc/0x210
[ 50.034108][ T3607] handle_bug+0x3c/0x60
[ 50.038271][ T3607] exc_invalid_op+0x14/0x40
[ 50.042787][ T3607] asm_exc_invalid_op+0x1b/0x20
[ 50.047645][ T3607] RIP: 0010:bpf_internal_load_pointer_neg_helper+0x1b1/0x1c0
[ 50.055039][ T3607] Code: ff ff 45 31 f6 e9 5a ff ff ff e8 aa 27 40 00 e9 3b ff ff ff e8 90 27 40 00 e9 df fe ff ff e8 86 27 40 00 eb 9e e8 2f 2c f3 ff <0f> 0b eb b1 e8 96 27 40 00 e9 79 fe ff ff 90 41 57 41 56 41 55 41
[ 50.074647][ T3607] RSP: 0018:ffffc9000308f4f8 EFLAGS: 00010293
[ 50.080717][ T3607] RAX: 0000000000000000 RBX: ffffffffffe10002 RCX: 0000000000000000
[ 50.088691][ T3607] RDX: ffff88807e01bb00 RSI: ffffffff81873f21 RDI: 0000000000000003
[ 50.096671][ T3607] RBP: ffff88807f339140 R08: 0000000000000003 R09: 000000000000ffff
[ 50.104640][ T3607] R10: 000000000000ffff R11: 0000000000000001 R12: 0000000000000002
[ 50.112615][ T3607] R13: ffff88802150b000 R14: 000000000000ffff R15: 0000000000000000
[ 50.120600][ T3607] ? bpf_internal_load_pointer_neg_helper+0x1b1/0x1c0
[ 50.127374][ T3607] ? bpf_internal_load_pointer_neg_helper+0x1b1/0x1c0
[ 50.134407][ T3607] bpf_skb_load_helper_16_no_cache+0x205/0x2b0
[ 50.140569][ T3607] ? bpf_skb_load_helper_16+0x230/0x230
[ 50.146127][ T3607] bpf_prog_e4a2190aaec26884+0x41/0x4c
[ 50.151591][ T3607] sk_filter_trim_cap+0x27c/0x9a0
[ 50.156626][ T3607] ? bpf_xdp_redirect+0x160/0x160
[ 50.161654][ T3607] ? netlink_lookup+0x25e/0x470
[ 50.166507][ T3607] ? __rhashtable_lookup.constprop.0+0x5e0/0x5e0
[ 50.172839][ T3607] ? is_vmalloc_addr+0x28/0x40
[ 50.177623][ T3607] netlink_unicast+0x1bf/0x7f0
[ 50.182395][ T3607] ? netlink_attachskb+0x880/0x880
[ 50.187509][ T3607] ? __build_skb_around+0x274/0x340
[ 50.192716][ T3607] ? memset+0x20/0x40
[ 50.196706][ T3607] ? __nlmsg_put+0x155/0x1c0
[ 50.201308][ T3607] netlink_ack+0x5cd/0xa80
[ 50.205754][ T3607] ? netlink_sendmsg+0xe10/0xe10
[ 50.210706][ T3607] netlink_rcv_skb+0x33d/0x420
[ 50.215477][ T3607] ? rtnl_fdb_dump+0x9a0/0x9a0
[ 50.220257][ T3607] ? netlink_ack+0xa80/0xa80
[ 50.224847][ T3607] ? netlink_deliver_tap+0x1a2/0xc40
[ 50.230136][ T3607] ? netlink_deliver_tap+0x1b1/0xc40
[ 50.235430][ T3607] netlink_unicast+0x543/0x7f0
[ 50.240210][ T3607] ? netlink_attachskb+0x880/0x880
[ 50.245324][ T3607] ? __virt_addr_valid+0x5d/0x2d0
[ 50.250371][ T3607] ? __phys_addr_symbol+0x2c/0x70
[ 50.255401][ T3607] ? __check_object_size+0x2de/0x700
[ 50.260696][ T3607] netlink_sendmsg+0x917/0xe10
[ 50.265480][ T3607] ? netlink_unicast+0x7f0/0x7f0
[ 50.270432][ T3607] ? bpf_lsm_socket_sendmsg+0x5/0x10
[ 50.275725][ T3607] ? netlink_unicast+0x7f0/0x7f0
[ 50.280670][ T3607] sock_sendmsg+0xcf/0x120
[ 50.285096][ T3607] ____sys_sendmsg+0x6eb/0x810
[ 50.289874][ T3607] ? kernel_sendmsg+0x50/0x50
[ 50.294565][ T3607] ? do_recvmmsg+0x6d0/0x6d0
[ 50.299163][ T3607] ? lockdep_hardirqs_on_prepare+0x400/0x400
[ 50.305153][ T3607] ? lockdep_hardirqs_on+0x79/0x100
[ 50.310366][ T3607] ___sys_sendmsg+0xf3/0x170
[ 50.314966][ T3607] ? sendmsg_copy_msghdr+0x160/0x160
[ 50.320267][ T3607] ? lock_release+0x780/0x780
[ 50.324945][ T3607] ? ptrace_stop.part.0+0x5ec/0xa80
[ 50.330146][ T3607] ? do_raw_spin_lock+0x120/0x2a0
[ 50.335180][ T3607] ? rwlock_bug.part.0+0x90/0x90
[ 50.340122][ T3607] ? _raw_spin_lock_irq+0x41/0x50
[ 50.345159][ T3607] ? __fget_light+0x20a/0x270
[ 50.349854][ T3607] __x64_sys_sendmsg+0x132/0x220
[ 50.354795][ T3607] ? __sys_sendmsg+0x1b0/0x1b0
[ 50.359573][ T3607] ? _raw_spin_unlock_irq+0x2a/0x40
[ 50.364777][ T3607] ? ptrace_notify+0xfa/0x140
[ 50.369461][ T3607] do_syscall_64+0x35/0xb0
[ 50.373889][ T3607] entry_SYSCALL_64_after_hwframe+0x46/0xb0
[ 50.379802][ T3607] RIP: 0033:0x7fc67d008e09
[ 50.384225][ T3607] Code: 28 c3 e8 2a 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
[ 50.403840][ T3607] RSP: 002b:00007fff98907f78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 50.412262][ T3607] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc67d008e09
[ 50.420238][ T3607] RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000003
[ 50.428209][ T3607] RBP: 00007fc67cfccfb0 R08: 0000000000000000 R09: 0000000000000000
[ 50.436190][ T3607] R10: 0000000000000004 R11: 0000000000000246 R12: 00007fc67cfcd040
[ 50.444163][ T3607] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[ 50.452590][ T3607]
[ 50.455880][ T3607] Kernel Offset: disabled
[ 50.460258][ T3607] Rebooting in 86400 seconds..