./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor770756326 <...> Warning: Permanently added '10.128.0.159' (ED25519) to the list of known hosts. execve("./syz-executor770756326", ["./syz-executor770756326"], 0x7ffe352221c0 /* 10 vars */) = 0 brk(NULL) = 0x555556d76000 brk(0x555556d76d00) = 0x555556d76d00 arch_prctl(ARCH_SET_FS, 0x555556d76380) = 0 set_tid_address(0x555556d76650) = 300 set_robust_list(0x555556d76660, 24) = 0 rseq(0x555556d76ca0, 0x20, 0, 0x53053053) = -1 ENOSYS (Function not implemented) prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor770756326", 4096) = 27 getrandom("\xb9\x43\x4e\x8f\xb3\x74\xbe\x4d", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556d76d00 brk(0x555556d97d00) = 0x555556d97d00 brk(0x555556d98000) = 0x555556d98000 mprotect(0x7fb072fe7000, 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 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556d76650) = 301 ./strace-static-x86_64: Process 301 attached [pid 301] set_robust_list(0x555556d76660, 24) = 0 [pid 301] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 301] setsid() = 1 [pid 301] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 301] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 301] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 301] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 301] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 301] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 301] unshare(CLONE_NEWNS) = 0 [pid 301] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 301] unshare(CLONE_NEWIPC) = -1 EINVAL (Invalid argument) [pid 301] unshare(CLONE_NEWCGROUP) = 0 [pid 301] unshare(CLONE_NEWUTS) = 0 [pid 301] unshare(CLONE_SYSVSEM) = 0 [pid 301] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 301] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 301] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 301] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 301] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 301] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 301] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 301] getpid() = 1 [pid 301] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0b 0f 1f 00 55 48 89 e5 41 56 53 48 89 fb e8 91 2a ac ff 4c 8d [ 26.046314][ T301] RSP: 0018:ffffc90000ec7a38 EFLAGS: 00010293 [ 26.052202][ T301] RAX: ffffffff81c9789b RBX: ffff888125039140 RCX: ffff88810083a880 [ 26.060311][ T301] RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000 [ 26.068117][ T301] RBP: ffffc90000ec7aa0 R08: ffffffff81c9722f R09: 0000000000000003 [ 26.075930][ T301] R10: ffffffffffffffff R11: dffffc0000000001 R12: ffff88810a842770 [ 26.083737][ T301] R13: 1ffff110215084ee R14: ffff88810b994050 R15: dffffc0000000000 [ 26.091551][ T301] FS: 0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 26.100321][ T301] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.106740][ T301] CR2: 00007fb072feb130 CR3: 00000001100c0000 CR4: 00000000003506a0 [ 26.114551][ T301] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.122369][ T301] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.130178][ T301] Call Trace: [ 26.133307][ T301] [ 26.136163][ T301] ? __die_body+0x62/0xb0 [ 26.140329][ T301] ? die+0x88/0xb0 [ 26.143927][ T301] ? do_trap+0x103/0x330 [ 26.147965][ T301] ? may_delete+0x6eb/0x6f0 [ 26.152315][ T301] ? handle_invalid_op+0x95/0xc0 [ 26.157077][ T301] ? may_delete+0x6eb/0x6f0 [ 26.161719][ T301] ? exc_invalid_op+0x32/0x50 [ 26.166221][ T301] ? asm_exc_invalid_op+0x1b/0x20 [ 26.171197][ T301] ? may_delete+0x7f/0x6f0 [ 26.175447][ T301] ? may_delete+0x6eb/0x6f0 [ 26.179876][ T301] ? may_delete+0x6eb/0x6f0 [ 26.184225][ T301] ? may_delete+0x6eb/0x6f0 [ 26.188563][ T301] vfs_rmdir+0x32/0x500 [ 26.192554][ T301] ? generic_shutdown_super+0x2b8/0x370 [ 26.197935][ T301] incfs_kill_sb+0x113/0x230 [ 26.202360][ T301] deactivate_locked_super+0xad/0x110 [ 26.207650][ T301] deactivate_super+0xbe/0xf0 [ 26.212162][ T301] cleanup_mnt+0x485/0x510 [ 26.216415][ T301] __cleanup_mnt+0x19/0x20 [ 26.220667][ T301] task_work_run+0x24d/0x2e0 [ 26.225093][ T301] ? kmem_cache_free+0x291/0x510 [ 26.229867][ T301] ? task_work_cancel+0x2b0/0x2b0 [ 26.234843][ T301] ? free_nsproxy+0x20d/0x260 [ 26.239332][ T301] ? exit_task_namespaces+0xb4/0xd0 [ 26.244455][ T301] do_exit+0xbd5/0x2b80 [ 26.248455][ T301] ? put_task_struct+0x80/0x80 [ 26.253052][ T301] ? __kasan_check_write+0x14/0x20 [ 26.257997][ T301] ? _raw_spin_lock_irq+0xa5/0x1b0 [ 26.262954][ T301] ? _raw_spin_lock_irqsave+0x210/0x210 [ 26.268326][ T301] ? do_notify_parent+0xa20/0xa20 [ 26.273188][ T301] ? zap_other_threads+0x29c/0x2d0 [ 26.278132][ T301] do_group_exit+0x21a/0x2d0 [ 26.282562][ T301] __x64_sys_exit_group+0x3f/0x40 [ 26.287419][ T301] x64_sys_call+0x610/0x9a0 [ 26.291760][ T301] do_syscall_64+0x3b/0xb0 [ 26.296045][ T301] ? clear_bhb_loop+0x55/0xb0 [ 26.300531][ T301] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 26.306252][ T301] RIP: 0033:0x7fb072f70e49 [ 26.310506][ T301] Code: Unable to access opcode bytes at 0x7fb072f70e1f. [ 26.317361][ T301] RSP: 002b:00007fffc05416f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 26.325619][ T301] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007fb072f70e49 [ 26.333519][ T301] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 26.341323][ T301] RBP: 00007fb072fed370 R08: ffffffffffffffb8 R09: 0000000000000006 [ 26.349133][ T301] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb072fed370 [ 26.356941][ T301] R13: 0000000000000000 R14: 00007fb072fee0e0 R15: 00007fb072f3f130 [ 26.364756][ T301] [ 26.367616][ T301] Modules linked in: [ 26.372699][ T301] ---[ end trace 0000000000000000 ]--- [ 26.378618][ T301] RIP: 0010:may_delete+0x6eb/0x6f0 [ 26.383554][ T301] Code: 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c 7f fe ff ff 4c 89 e7 e8 a6 6e f3 ff e9 72 fe ff ff e8 ac 2a ac ff 0f 0b e8 a5 2a ac ff <0f> 0b 0f 1f 00 55 48 89 e5 41 56 53 48 89 fb e8 91 2a ac ff 4c 8d [ 26.403215][ T301] RSP: 0018:ffffc90000ec7a38 EFLAGS: 00010293 [ 26.409120][ T301] RAX: ffffffff81c9789b RBX: ffff888125039140 RCX: ffff88810083a880 [ 26.416904][ T301] RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000 [ 26.424780][ T301] RBP: ffffc90000ec7aa0 R08: ffffffff81c9722f R09: 0000000000000003 [ 26.432687][ T301] R10: ffffffffffffffff R11: dffffc0000000001 R12: ffff88810a842770 [ 26.440674][ T301] R13: 1ffff110215084ee R14: ffff88810b994050 R15: dffffc0000000000 [ 26.448396][ T301] FS: 0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 26.457155][ T301] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.463580][ T301] CR2: 0000557f56287018 CR3: 000000000700f000 CR4: 00000000003506b0 [ 26.471417][ T301] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.479326][ T301] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.487093][ T301] Kernel panic - not syncing: Fatal exception [ 26.493229][ T301] Kernel Offset: disabled [ 26.497354][ T301] Rebooting in 86400 seconds..