./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3673044280 <...> Warning: Permanently added '10.128.0.149' (ED25519) to the list of known hosts. execve("./syz-executor3673044280", ["./syz-executor3673044280"], 0x7ffcbed13c30 /* 10 vars */) = 0 brk(NULL) = 0x555571c8f000 brk(0x555571c8fd00) = 0x555571c8fd00 arch_prctl(ARCH_SET_FS, 0x555571c8f380) = 0 set_tid_address(0x555571c8f650) = 5083 set_robust_list(0x555571c8f660, 24) = 0 rseq(0x555571c8fca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3673044280", 4096) = 28 getrandom("\xc0\xeb\xc1\x1a\x43\xff\xbc\x07", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555571c8fd00 brk(0x555571cb0d00) = 0x555571cb0d00 brk(0x555571cb1000) = 0x555571cb1000 mprotect(0x7f1e2d38f000, 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_INET, SOCK_DGRAM, IPPROTO_UDPLITE) = 3 ioctl(3, SIOCGIFINDEX, {ifr_name="lo", ifr_ifindex=1}) = 0 socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE) = 4 sendmsg(4, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x48\x00\x00\x00\x24\x00\x0b\x0d\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\xff\xff\xff\xff\x00\x00\x00\x00\x08\x00\x01\x00\x63\x62\x73\x00\x1c\x00\x02\x00\x18\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", iov_len=72}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 72 socket(AF_INET6, SOCK_STREAM, IPPROTO_IP) = 5 setsockopt(5, SOL_TCP, TCP_WINDOW_CLAMP, [191], 4) = 0 bind(5, {sa_family=AF_INET6, sin6_port=htons(2), sin6_flowinfo=htonl(0), inet_pton(AF_INET6, "::1", &sin6_addr), sin6_scope_id=0}, 28) = 0 setsockopt(5, SOL_TCP, TCP_FASTOPEN_NO_COOKIE, [1], 4) = 0 [ 63.226066][ T5083] UDPLite: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list sendto(5, "\x04\x4a\xac\x2f\x20\x2c\x5f\xed\xa7\x1e\x03\x9a\x57\xa9\x30\x88\xfd\xcc\xe4\xaf\xe2\x8a\xac\x61\x83\x77\x92\x74\x1a\x19\x06\x70\xcc\xbe\x1a\x2b\x00\xaa\x77\xa8\x7d\x56\xa3\xf1\x2c\x79\x20\xad\x02\x92\x8a\x5d\x10\x14\xe5\xb8\x96\xf0\x00\xfc\xf6\x52\x19\x28\x48\x0b\xe9\xaf\x82\x61\x3a\x5c\x66\x1f\x41\x10\xad\xba\x35\x8a\xfd\x8b\x5b\x4e\xf1\x70\x20\x51\xe3\x93\xed\xe2\x69\x81\x12\xa1\xf1\xbd\xf1\xd0"..., 78489062045332818, MSG_OOB|MSG_DONTROUTE|MSG_DONTWAIT|MSG_CONFIRM|MSG_FASTOPEN, {sa_family=AF_INET6, sin6_port=htons(2), sin6_flowinfo=htonl(0), inet_pton(AF_INET6, "::", &sin6_addr), sin6_scope_id=0}, 28) = 32768 shutdown(5, SHUT_WR) = 0 [ 63.634922][ T5083] divide error: 0000 [#1] PREEMPT SMP KASAN PTI [ 63.641257][ T5083] CPU: 1 PID: 5083 Comm: syz-executor367 Not tainted 6.9.0-rc6-syzkaller-00046-g18daea77cca6 #0 [ 63.651707][ T5083] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 63.661756][ T5083] RIP: 0010:tcp_rcv_space_adjust+0x2df/0x890 [ 63.667860][ T5083] Code: e3 04 4c 01 eb 48 8b 44 24 38 0f b6 04 10 84 c0 49 89 d5 0f 85 a5 03 00 00 41 8b 8e c8 09 00 00 89 e8 29 c8 48 0f af c3 31 d2 <48> f7 f1 48 8d 1c 43 49 8d 96 76 08 00 00 48 89 d0 48 c1 e8 03 48 [ 63.687643][ T5083] RSP: 0018:ffffc9000268f3f0 EFLAGS: 00010246 [ 63.693743][ T5083] RAX: 846f1f571fd61f12 RBX: 00000001046d73a6 RCX: 0000000000000000 [ 63.701738][ T5083] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 63.709723][ T5083] RBP: 00000000822ebbb3 R08: ffffffff89e535a4 R09: 1ffffffff25e6ab7 [ 63.717707][ T5083] R10: dffffc0000000000 R11: ffffffff8135e920 R12: ffff88802af40d30 [ 63.725677][ T5083] R13: dffffc0000000000 R14: ffff88802af40d00 R15: 1ffff110055e82da [ 63.733639][ T5083] FS: 0000555571c8f380(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 [ 63.742630][ T5083] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 63.750013][ T5083] CR2: 00007ff04b5b4308 CR3: 000000007ae4e000 CR4: 00000000003506f0 [ 63.757994][ T5083] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 63.765965][ T5083] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 63.773943][ T5083] Call Trace: [ 63.777225][ T5083] [ 63.780157][ T5083] ? __die_body+0x88/0xe0 [ 63.784485][ T5083] ? die+0xcf/0x110 [ 63.788347][ T5083] ? do_trap+0x15a/0x3a0 [ 63.792596][ T5083] ? tcp_rcv_space_adjust+0x2df/0x890 [ 63.797989][ T5083] ? do_error_trap+0x1dc/0x2c0 [ 63.802818][ T5083] ? tcp_rcv_space_adjust+0x2df/0x890 [ 63.808195][ T5083] ? __pfx_do_error_trap+0x10/0x10 [ 63.813303][ T5083] ? rcu_is_watching+0x15/0xb0 [ 63.818085][ T5083] ? exc_divide_error+0x39/0x50 [ 63.822942][ T5083] ? tcp_rcv_space_adjust+0x2df/0x890 [ 63.828332][ T5083] ? asm_exc_divide_error+0x1a/0x20 [ 63.833545][ T5083] ? __pfx_read_tsc+0x10/0x10 [ 63.838215][ T5083] ? tcp_rcv_space_adjust+0x284/0x890 [ 63.843683][ T5083] ? tcp_rcv_space_adjust+0x2df/0x890 [ 63.849054][ T5083] ? __tcp_send_ack+0x1fc/0x600 [ 63.854082][ T5083] tcp_recvmsg_locked+0x106d/0x25a0 [ 63.859280][ T5083] ? __pfx_tcp_recvmsg_locked+0x10/0x10 [ 63.864914][ T5083] ? tcp_recvmsg+0x23c/0x920 [ 63.869515][ T5083] ? dquot_alloc_inode+0xaf3/0xc90 [ 63.874621][ T5083] tcp_recvmsg+0x25d/0x920 [ 63.879046][ T5083] ? __pfx___might_resched+0x10/0x10 [ 63.884421][ T5083] ? __pfx_tcp_recvmsg+0x10/0x10 [ 63.889459][ T5083] ? aa_sk_perm+0x967/0xab0 [ 63.894072][ T5083] ? __pfx_tcp_recvmsg+0x10/0x10 [ 63.899575][ T5083] inet6_recvmsg+0x16a/0x730 [ 63.904696][ T5083] ? __pfx_inet6_recvmsg+0x10/0x10 [ 63.909840][ T5083] ? aa_sock_msg_perm+0x91/0x160 [ 63.914777][ T5083] ? bpf_lsm_socket_recvmsg+0x9/0x10 [ 63.920053][ T5083] ? security_socket_recvmsg+0x90/0xb0 [ 63.925496][ T5083] sock_recvmsg+0x109/0x280 [ 63.929996][ T5083] ____sys_recvmsg+0x1db/0x470 [ 63.934739][ T5083] ? __pfx_____sys_recvmsg+0x10/0x10 [ 63.940008][ T5083] do_recvmmsg+0x474/0xae0 [ 63.944406][ T5083] ? __pfx_do_recvmmsg+0x10/0x10 [ 63.949325][ T5083] ? do_raw_spin_lock+0x14f/0x370 [ 63.954343][ T5083] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 63.960323][ T5083] ? lockdep_hardirqs_on+0x99/0x150 [ 63.965529][ T5083] ? _raw_spin_unlock_irq+0x2e/0x50 [ 63.970740][ T5083] ? ptrace_notify+0x279/0x380 [ 63.975497][ T5083] __x64_sys_recvmmsg+0x199/0x250 [ 63.980514][ T5083] ? __pfx___x64_sys_recvmmsg+0x10/0x10 [ 63.986048][ T5083] ? do_syscall_64+0x102/0x240 [ 63.990801][ T5083] do_syscall_64+0xf5/0x240 [ 63.995293][ T5083] ? clear_bhb_loop+0x35/0x90 [ 63.999993][ T5083] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 64.005901][ T5083] RIP: 0033:0x7f1e2d31c769 [ 64.010310][ T5083] Code: 48 83 c4 28 c3 e8 37 17 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 [ 64.029972][ T5083] RSP: 002b:00007fffb6628df8 EFLAGS: 00000246 ORIG_RAX: 000000000000012b [ 64.038373][ T5083] RAX: ffffffffffffffda RBX: 00007fffb6628fd8 RCX: 00007f1e2d31c769 [ 64.046328][ T5083] RDX: 0000000000000001 RSI: 0000000020000bc0 RDI: 0000000000000005 [ 64.054324][ T5083] RBP: 00007f1e2d38f610 R08: 0000000000000000 R09: 000000000000001c [ 64.062372][ T5083] R10: 0000000000000122 R11: 0000000000000246 R12: 0000000000000001 [ 64.072262][ T5083] R13: 00007fffb6628fc8 R14: 0000000000000001 R15: 0000000000000001 [ 64.080223][ T5083] [ 64.083225][ T5083] Modules linked in: [ 64.088093][ T5083] ---[ end trace 0000000000000000 ]--- [ 64.093578][ T5083] RIP: 0010:tcp_rcv_space_adjust+0x2df/0x890 [ 64.099653][ T5083] Code: e3 04 4c 01 eb 48 8b 44 24 38 0f b6 04 10 84 c0 49 89 d5 0f 85 a5 03 00 00 41 8b 8e c8 09 00 00 89 e8 29 c8 48 0f af c3 31 d2 <48> f7 f1 48 8d 1c 43 49 8d 96 76 08 00 00 48 89 d0 48 c1 e8 03 48 [ 64.119493][ T5083] RSP: 0018:ffffc9000268f3f0 EFLAGS: 00010246 [ 64.125585][ T5083] RAX: 846f1f571fd61f12 RBX: 00000001046d73a6 RCX: 0000000000000000 [ 64.133561][ T5083] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 64.141623][ T5083] RBP: 00000000822ebbb3 R08: ffffffff89e535a4 R09: 1ffffffff25e6ab7 [ 64.149643][ T5083] R10: dffffc0000000000 R11: ffffffff8135e920 R12: ffff88802af40d30 [ 64.157781][ T5083] R13: dffffc0000000000 R14: ffff88802af40d00 R15: 1ffff110055e82da [ 64.165806][ T5083] FS: 0000555571c8f380(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 [ 64.176176][ T5083] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 64.182782][ T5083] CR2: 0000000020008000 CR3: 000000007ae4e000 CR4: 00000000003506f0 [ 64.190899][ T5083] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 64.199020][ T5083] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 64.207039][ T5083] Kernel panic - not syncing: Fatal exception [ 64.213430][ T5083] Kernel Offset: disabled [ 64.218117][ T5083] Rebooting in 86400 seconds..