./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1098785935 <...> [ 5.550525][ T162] udevd[162]: starting eudev-3.2.11 [ 6.585903][ T194] ip (194) used greatest stack depth: 23128 bytes left [ 7.191775][ T247] sshd (247) used greatest stack depth: 23096 bytes left [ 9.268930][ T167] udevd (167) used greatest stack depth: 22072 bytes left [ 14.892978][ T23] kauditd_printk_skb: 50 callbacks suppressed [ 14.892988][ T23] audit: type=1400 audit(1712187251.209:61): avc: denied { transition } for pid=286 comm="sshd" path="/bin/sh" dev="sda1" ino=89 scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 14.900211][ T23] audit: type=1400 audit(1712187251.209:62): avc: denied { noatsecure } for pid=286 comm="sshd" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 14.903306][ T23] audit: type=1400 audit(1712187251.209:63): avc: denied { write } for pid=286 comm="sh" path="pipe:[10436]" dev="pipefs" ino=10436 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:sshd_t tclass=fifo_file permissive=1 [ 14.906746][ T23] audit: type=1400 audit(1712187251.209:64): avc: denied { rlimitinh } for pid=286 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 14.910325][ T23] audit: type=1400 audit(1712187251.209:65): avc: denied { siginh } for pid=286 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 Warning: Permanently added '10.128.0.238' (ED25519) to the list of known hosts. execve("./syz-executor1098785935", ["./syz-executor1098785935"], 0x7ffc8d5f89e0 /* 10 vars */) = 0 brk(NULL) = 0x5555560e4000 brk(0x5555560e4d00) = 0x5555560e4d00 arch_prctl(ARCH_SET_FS, 0x5555560e4380) = 0 set_tid_address(0x5555560e4650) = 355 set_robust_list(0x5555560e4660, 24) = 0 rseq(0x5555560e4ca0, 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-executor1098785935", 4096) = 28 getrandom("\x30\xe9\x71\xc1\x35\xcb\x52\xa8", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555560e4d00 brk(0x555556105d00) = 0x555556105d00 brk(0x555556106000) = 0x555556106000 mprotect(0x7f8dc5de6000, 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=0x5555560e4650) = 357 ./strace-static-x86_64: Process 357 attached [pid 357] set_robust_list(0x5555560e4660, 24) = 0 [pid 357] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 357] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 357] setsid() = 1 [pid 357] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 357] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 357] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 357] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 357] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 357] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 357] unshare(CLONE_NEWNS) = 0 [pid 357] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 357] unshare(CLONE_NEWIPC) = -1 EINVAL (Invalid argument) [pid 357] unshare(CLONE_NEWCGROUP) = 0 [pid 357] unshare(CLONE_NEWUTS) = 0 [pid 357] unshare(CLONE_SYSVSEM) = 0 [pid 357] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 357] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 357] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 357] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 357] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 357] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 357] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 357] getpid() = 1 [pid 357] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0b 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 41 56 53 48 89 fb [ 23.842374][ T357] RSP: 0018:ffff8881db807a68 EFLAGS: 00010293 [ 23.848271][ T357] RAX: ffffffff819e07a0 RBX: ffff8881dc02fab8 RCX: ffff8881dbfa0fc0 [ 23.856119][ T357] RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000 [ 23.864021][ T357] RBP: ffff8881e8381250 R08: ffffffff819e00c8 R09: 0000000000000003 [ 23.871843][ T357] R10: ffffffffffffffff R11: dffffc0000000001 R12: ffff8881dc02faa0 [ 23.879726][ T357] R13: dffffc0000000000 R14: 0000000000000001 R15: ffff8881dc034b50 [ 23.887625][ T357] FS: 00005555560e4380(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 23.896390][ T357] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.902803][ T357] CR2: 00007f8dc5dea130 CR3: 0000000005e0e000 CR4: 00000000003406a0 [ 23.910634][ T357] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.918555][ T357] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.926350][ T357] Call Trace: [ 23.929487][ T357] ? __die+0xb4/0x100 [ 23.933294][ T357] ? die+0x26/0x50 [ 23.936878][ T357] ? do_trap+0x1e7/0x340 [ 23.940958][ T357] ? may_delete+0x750/0x760 [ 23.945276][ T357] ? may_delete+0x750/0x760 [ 23.949626][ T357] ? do_invalid_op+0xfb/0x110 [ 23.954129][ T357] ? may_delete+0x750/0x760 [ 23.958492][ T357] ? invalid_op+0x1e/0x30 [ 23.962653][ T357] ? may_delete+0x78/0x760 [ 23.966883][ T357] ? may_delete+0x750/0x760 [ 23.971315][ T357] ? may_delete+0x750/0x760 [ 23.975666][ T357] ? may_delete+0x750/0x760 [ 23.980003][ T357] vfs_rmdir+0x29/0x3c0 [ 23.984001][ T357] incfs_kill_sb+0x105/0x200 [ 23.988530][ T357] deactivate_locked_super+0xa8/0x110 [ 23.993934][ T357] deactivate_super+0x1e2/0x2a0 [ 23.998697][ T357] ? deactivate_locked_super+0x110/0x110 [ 24.004164][ T357] ? lockref_put_return+0xbf/0xe0 [ 24.009021][ T357] ? dput+0x294/0x2f0 [ 24.012837][ T357] cleanup_mnt+0x44e/0x500 [ 24.017092][ T357] task_work_run+0x140/0x170 [ 24.021517][ T357] do_exit+0xcaf/0x2bc0 [ 24.025514][ T357] ? put_task_struct+0x80/0x80 [ 24.030233][ T357] ? syscall_trace_enter+0x650/0x940 [ 24.035475][ T357] do_group_exit+0x138/0x300 [ 24.039886][ T357] __x64_sys_exit_group+0x3b/0x40 [ 24.044750][ T357] do_syscall_64+0xca/0x1c0 [ 24.049085][ T357] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 24.054937][ T357] Modules linked in: [ 24.059105][ T357] ---[ end trace f753f506d0b6ed4f ]--- [ 24.064406][ T357] RIP: 0010:may_delete+0x750/0x760 [ 24.069413][ T357] Code: 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c e8 fd ff ff 4c 89 e7 e8 71 13 f6 ff e9 db fd ff ff e8 87 3f c6 ff 0f 0b e8 80 3f c6 ff <0f> 0b 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 41 56 53 48 89 fb [ 24.090014][ T357] RSP: 0018:ffff8881db807a68 EFLAGS: 00010293 [ 24.096127][ T357] RAX: ffffffff819e07a0 RBX: ffff8881dc02fab8 RCX: ffff8881dbfa0fc0 [ 24.103991][ T357] RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000 [ 24.111932][ T357] RBP: ffff8881e8381250 R08: ffffffff819e00c8 R09: 0000000000000003 [ 24.119698][ T357] R10: ffffffffffffffff R11: dffffc0000000001 R12: ffff8881dc02faa0 [ 24.127663][ T357] R13: dffffc0000000000 R14: 0000000000000001 R15: ffff8881dc034b50 [ 24.135433][ T357] FS: 00005555560e4380(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 24.144256][ T357] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.150660][ T357] CR2: 00007f8dc5dea130 CR3: 00000001e4e7b000 CR4: 00000000003406a0 [ 24.158854][ T357] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.166798][ T357] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.174677][ T357] Kernel panic - not syncing: Fatal exception [ 24.180586][ T357] Kernel Offset: disabled [ 24.184710][ T357] Rebooting in 86400 seconds..