./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1109761837 <...> [ 152.546447][ T5463] eql: remember to turn off Van-Jacobson compression on your slave devices Starting crond: OK [ 154.738983][ T5547] ssh-keygen (5547) used greatest stack depth: 4928 bytes left Starting sshd: [ 155.852220][ T5559] sshd (5559) used greatest stack depth: 4912 bytes left OK syzkaller Warning: Permanently added '10.128.1.229' (ED25519) to the list of known hosts. execve("./syz-executor1109761837", ["./syz-executor1109761837"], 0x7ffd3204bd90 /* 10 vars */) = 0 brk(NULL) = 0x555561467000 brk(0x555561467d00) = 0x555561467d00 arch_prctl(ARCH_SET_FS, 0x555561467380) = 0 set_tid_address(0x555561467650) = 5803 set_robust_list(0x555561467660, 24) = 0 rseq(0x555561467ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1109761837", 4096) = 28 getrandom("\x28\x22\xc1\x07\xa9\xb9\xc7\xf0", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555561467d00 brk(0x555561488d00) = 0x555561488d00 brk(0x555561489000) = 0x555561489000 mprotect(0x7f89a07a3000, 16384, PROT_READ) = 0 mmap(0x1ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffffffff000 mmap(0x200000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200000000000 mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200001000000 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555561467650) = 5804 ./strace-static-x86_64: Process 5804 attached [pid 5804] set_robust_list(0x555561467660, 24) = 0 [pid 5804] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5804] getppid() = 0 [pid 5804] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5804] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5804] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5804] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5804] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5804] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5804] unshare(CLONE_NEWNS) = 0 [pid 5804] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5804] unshare(CLONE_NEWIPC) = 0 [pid 5804] unshare(CLONE_NEWCGROUP) = 0 [pid 5804] unshare(CLONE_NEWUTS) = 0 [pid 5804] unshare(CLONE_SYSVSEM) = 0 [pid 5804] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5804] write(3, "16777216", 8) = 8 [pid 5804] close(3) = 0 [pid 5804] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5804] write(3, "536870912", 9) = 9 [pid 5804] close(3) = 0 [pid 5804] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5804] write(3, "1024", 4) = 4 [pid 5804] close(3) = 0 [pid 5804] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5804] write(3, "8192", 4) = 4 [pid 5804] close(3) = 0 [pid 5804] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5804] write(3, "1024", 4) = 4 [pid 5804] close(3) = 0 [pid 5804] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5804] write(3, "1024", 4) = 4 [pid 5804] close(3) = 0 [pid 5804] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5804] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5804] close(3) = 0 [pid 5804] getpid() = 1 [pid 5804] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< [ 218.271662][ T5830] __dump_stack+0x26/0x30 [ 218.276168][ T5830] dump_stack_lvl+0x53/0x270 [ 218.280964][ T5830] ? kmsan_get_shadow_origin_ptr+0x4a/0xb0 [ 218.286974][ T5830] dump_stack+0x1e/0x25 [ 218.291430][ T5830] panic+0x4bd/0xd50 [ 218.295667][ T5830] kmsan_report+0x31c/0x320 [ 218.300414][ T5830] ? __msan_warning+0x1b/0x30 [ 218.305288][ T5830] ? pptp_xmit+0xc34/0x2720 [ 218.310093][ T5830] ? ppp_input+0x1d6/0xe60 [ 218.314722][ T5830] ? pppoe_rcv_core+0x1e8/0x760 [ 218.319778][ T5830] ? sk_backlog_rcv+0x142/0x420 [ 218.324871][ T5830] ? __release_sock+0x1d3/0x330 [ 218.330027][ T5830] ? release_sock+0x6b/0x270 [ 218.334958][ T5830] ? pppoe_sendmsg+0x15d/0xcb0 [ 218.340036][ T5830] ? __sock_sendmsg+0x330/0x3d0 [ 218.345233][ T5830] ? ____sys_sendmsg+0x893/0xd80 [ 218.350478][ T5830] ? ___sys_sendmsg+0x271/0x3b0 [ 218.355549][ T5830] ? __sys_sendmmsg+0x2d9/0x7c0 [ 218.360668][ T5830] ? __x64_sys_sendmmsg+0xc6/0x150 [ 218.366005][ T5830] ? x64_sys_call+0x3ce7/0x3db0 [ 218.371242][ T5830] ? do_syscall_64+0xd9/0x210 [ 218.376134][ T5830] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 218.382430][ T5830] ? kmsan_internal_set_shadow_origin+0x79/0x110 [ 218.389111][ T5830] ? kmsan_internal_unpoison_memory+0x14/0x20 [ 218.395516][ T5830] ? kmem_cache_free+0x3ef/0xec0 [ 218.400645][ T5830] ? __kfree_skb+0x20b/0x260 [ 218.405540][ T5830] ? kmsan_get_metadata+0xfb/0x160 [ 218.410884][ T5830] __msan_warning+0x1b/0x30 [ 218.415549][ T5830] pptp_xmit+0xc34/0x2720 [ 218.420151][ T5830] ? __pfx_pptp_xmit+0x10/0x10 [ 218.425215][ T5830] ppp_input+0x1d6/0xe60 [ 218.429707][ T5830] ? kmsan_get_metadata+0xfb/0x160 [ 218.434996][ T5830] pppoe_rcv_core+0x1e8/0x760 [ 218.439855][ T5830] ? __pfx_pppoe_rcv_core+0x10/0x10 [ 218.445259][ T5830] sk_backlog_rcv+0x142/0x420 [ 218.450260][ T5830] __release_sock+0x1d3/0x330 [ 218.455236][ T5830] release_sock+0x6b/0x270 [ 218.459972][ T5830] pppoe_sendmsg+0x15d/0xcb0 [ 218.464882][ T5830] ? __pfx_pppoe_sendmsg+0x10/0x10 [ 218.470242][ T5830] ? __pfx_pppoe_sendmsg+0x10/0x10 [ 218.475564][ T5830] __sock_sendmsg+0x330/0x3d0 [ 218.480465][ T5830] ____sys_sendmsg+0x893/0xd80 [ 218.485492][ T5830] ___sys_sendmsg+0x271/0x3b0 [ 218.490813][ T5830] ? _raw_spin_unlock_irqrestore+0x3f/0x60 [ 218.496910][ T5830] ? stack_depot_save_flags+0x60f/0x7b0 [ 218.502760][ T5830] ? kmsan_get_metadata+0xfb/0x160 [ 218.508121][ T5830] ? kmsan_get_metadata+0xfb/0x160 [ 218.513397][ T5830] ? kmsan_get_shadow_origin_ptr+0x4a/0xb0 [ 218.519380][ T5830] ? kmsan_get_metadata+0xfb/0x160 [ 218.524687][ T5830] ? kmsan_get_shadow_origin_ptr+0x4a/0xb0 [ 218.530732][ T5830] __sys_sendmmsg+0x2d9/0x7c0 [ 218.535578][ T5830] ? kmsan_get_metadata+0xfb/0x160 [ 218.540888][ T5830] ? kmsan_internal_set_shadow_origin+0x79/0x110 [ 218.547520][ T5830] ? kmsan_internal_unpoison_memory+0x14/0x20 [ 218.553837][ T5830] __x64_sys_sendmmsg+0xc6/0x150 [ 218.558995][ T5830] x64_sys_call+0x3ce7/0x3db0 [ 218.563972][ T5830] do_syscall_64+0xd9/0x210 [ 218.568712][ T5830] ? irqentry_exit+0x16/0x60 [ 218.573467][ T5830] ? clear_bhb_loop+0x40/0x90 [ 218.578368][ T5830] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 218.584539][ T5830] RIP: 0033:0x7f89a072af69 [ 218.589194][ T5830] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 1a 00 00 90 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 [ 218.609041][ T5830] RSP: 002b:00007ffcfe30c8f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 [ 218.617637][ T5830] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f89a072af69 [ 218.625782][ T5830] RDX: 0000000000000001 RSI: 00002000000008c0 RDI: 0000000000000003 [ 218.633938][ T5830] RBP: 00000000000f4240 R08: 0000000000000001 R09: 0000000000000001 [ 218.642056][ T5830] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcfe30c950 [ 218.650190][ T5830] R13: 00007f89a07783fe R14: 0000000000000003 R15: 00007ffcfe30c930 [ 218.658409][ T5830] [ 218.661916][ T5830] Kernel Offset: disabled [ 218.666347][ T5830] Rebooting in 86400 seconds..