./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor72459675 <...> [ 3.230301][ T24] audit: type=1400 audit(1726765516.469:9): avc: denied { append open } for pid=76 comm="syslogd" path="/tmp/messages" dev="tmpfs" ino=2 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=file permissive=1 [ 3.233460][ T24] audit: type=1400 audit(1726765516.469:10): avc: denied { getattr } for pid=76 comm="syslogd" path="/tmp/messages" dev="tmpfs" ino=2 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=file permissive=1 [ 3.455516][ T93] udevd[93]: starting version 3.2.11 [ 3.499400][ T94] udevd[94]: starting eudev-3.2.11 [ 12.240777][ T24] kauditd_printk_skb: 50 callbacks suppressed [ 12.240787][ T24] audit: type=1400 audit(1726765525.489:61): avc: denied { transition } for pid=218 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 [ 12.244716][ T24] audit: type=1400 audit(1726765525.489:62): avc: denied { noatsecure } for pid=218 comm="sshd" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 12.247533][ T24] audit: type=1400 audit(1726765525.489:63): avc: denied { write } for pid=218 comm="sh" path="pipe:[1973]" dev="pipefs" ino=1973 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:sshd_t tclass=fifo_file permissive=1 [ 12.251165][ T24] audit: type=1400 audit(1726765525.489:64): avc: denied { rlimitinh } for pid=218 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 12.253671][ T24] audit: type=1400 audit(1726765525.489:65): avc: denied { siginh } for pid=218 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 Warning: Permanently added '10.128.0.10' (ED25519) to the list of known hosts. execve("./syz-executor72459675", ["./syz-executor72459675"], 0x7fff516e23b0 /* 10 vars */) = 0 brk(NULL) = 0x5555954ae000 brk(0x5555954aed00) = 0x5555954aed00 arch_prctl(ARCH_SET_FS, 0x5555954ae380) = 0 set_tid_address(0x5555954ae650) = 287 set_robust_list(0x5555954ae660, 24) = 0 rseq(0x5555954aeca0, 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-executor72459675", 4096) = 26 getrandom("\x95\x82\xa1\xfd\xe5\x0b\xc7\x83", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555954aed00 brk(0x5555954cfd00) = 0x5555954cfd00 brk(0x5555954d0000) = 0x5555954d0000 mprotect(0x7fbb676fc000, 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 getrandom("\x2c\x29\x35\xf7\x78\xfb\x96\x83", 8, GRND_NONBLOCK) = 8 mkdir("./syzkaller.uAbHFP", 0700) = 0 chmod("./syzkaller.uAbHFP", 0777) = 0 chdir("./syzkaller.uAbHFP") = 0 mkdir("./0", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555954ae650) = 288 ./strace-static-x86_64: Process 288 attached [pid 288] set_robust_list(0x5555954ae660, 24) = 0 [pid 288] chdir("./0") = 0 [pid 288] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 288] setpgid(0, 0) = 0 [pid 288] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 288] write(3, "1000", 4) = 4 [pid 288] close(3) = 0 [pid 288] symlink("/dev/binderfs", "./binderfs") = 0 [pid 288] write(1, "executing program\n", 18executing program ) = 18 [pid 288] memfd_create("syzkaller", 0) = 3 [pid 288] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fbb5f249000 [pid 288] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 288] munmap(0x7fbb5f249000, 138412032) = 0 [pid 288] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 288] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 288] close(3) = 0 [ 21.131609][ T24] audit: type=1400 audit(1726765534.379:66): avc: denied { execmem } for pid=287 comm="syz-executor724" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 21.137874][ T24] audit: type=1400 audit(1726765534.379:67): avc: denied { read write } for pid=287 comm="syz-executor724" name="loop0" dev="devtmpfs" ino=111 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 21.141297][ T24] audit: type=1400 audit(1726765534.379:68): avc: denied { open } for pid=287 comm="syz-executor724" path="/dev/loop0" dev="devtmpfs" ino=111 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 21.144752][ T24] audit: type=1400 audit(1726765534.389:69): avc: denied { ioctl } for pid=287 comm="syz-executor724" path="/dev/loop0" dev="devtmpfs" ino=111 ioctlcmd=0x4c01 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [pid 288] close(4) = 0 [pid 288] mkdir("./file1", 0777) = 0 [ 21.180267][ T24] audit: type=1400 audit(1726765534.429:70): avc: denied { mounton } for pid=288 comm="syz-executor724" path="/root/syzkaller.uAbHFP/0/file1" dev="sda1" ino=1930 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 21.204524][ T288] ====================================================== [ 21.204524][ T288] WARNING: the mand mount option is being deprecated and [ 21.204524][ T288] will be removed in v5.15! [ 21.204524][ T288] ====================================================== [ 21.281176][ T288] EXT4-fs (loop0): 1 orphan inode deleted [ 21.286708][ T288] EXT4-fs (loop0): mounted filesystem without journal. Opts: errors=remount-ro,nodiscard,noquota,init_itable,stripe=0x0000000000000079,resgid=0x0000000000000000,sysvgroups,delalloc,errors=continue, [ 21.306415][ T24] audit: type=1400 audit(1726765534.549:71): avc: denied { mount } for pid=288 comm="syz-executor724" name="/" dev="loop0" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1 [pid 288] mount("/dev/loop0", "./file1", "ext4", MS_MANDLOCK|MS_LAZYTIME, "errors=remount-ro,nodiscard,noquota,init_itable,stripe=0x0000000000000079,resgid=0x0000000000000000,"...) = 0 [pid 288] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 288] chdir("./file1") = 0 [pid 288] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 288] ioctl(4, LOOP_CLR_FD) = 0 [pid 288] close(4) = 0 [pid 288] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 288] open("./file2", O_RDWR|O_CREAT|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000) = -1 EISDIR (Is a directory) [pid 288] exit_group(0) = ? [pid 288] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=288, si_uid=0, si_status=0, si_utime=0, si_stime=6} --- umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x5555954af6f0 /* 4 entries */, 32768) = 112 umount2("./0/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./0/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./0/binderfs") = 0 umount2("./0/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EBUSY (Device or resource busy) newfstatat(AT_FDCWD, "./0/file1", {st_mode=S_IFDIR|0755, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./0/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EBUSY (Device or resource busy) openat(AT_FDCWD, "./0/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0755, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555954b7730 /* 8 entries */, 32768) = 240 umount2("./0/file1/lost+found", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./0/file1/lost+found", {st_mode=S_IFDIR|0700, st_size=16384, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./0/file1/lost+found", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./0/file1/lost+found", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 5 newfstatat(5, "", {st_mode=S_IFDIR|0700, st_size=16384, ...}, AT_EMPTY_PATH) = 0 getdents64(5, 0x5555954bf770 /* 2 entries */, 32768) = 48 getdents64(5, 0x5555954bf770 /* 0 entries */, 32768) = 0 close(5) = 0 rmdir("./0/file1/lost+found") = 0 [ 21.306446][ T288] ext4 filesystem being mounted at /root/syzkaller.uAbHFP/0/file1 supports timestamps until 2038 (0x7fffffff) [ 21.341445][ T24] audit: type=1400 audit(1726765534.589:72): avc: denied { mounton } for pid=288 comm="syz-executor724" path="/root/syzkaller.uAbHFP/0/file1/file0" dev="loop0" ino=12 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 21.366613][ T24] audit: type=1400 audit(1726765534.589:73): avc: denied { write } for pid=288 comm="syz-executor724" name="file0" dev="loop0" ino=12 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 21.388698][ T24] audit: type=1400 audit(1726765534.589:74): avc: denied { add_name } for pid=288 comm="syz-executor724" name=".index" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 21.389003][ T287] ------------[ cut here ]------------ [ 21.409508][ T24] audit: type=1400 audit(1726765534.589:75): avc: denied { create } for pid=288 comm="syz-executor724" name=".index" scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:unlabeled_t tclass=dir permissive=1 [ 21.414764][ T287] kernel BUG at fs/namei.c:2786! [ 21.440130][ T287] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 21.445919][ T287] CPU: 0 PID: 287 Comm: syz-executor724 Not tainted 5.10.225-syzkaller-00513-g8d23314f588a #0 [ 21.455980][ T287] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 [ 21.465882][ T287] RIP: 0010:may_delete+0x755/0x760 [ 21.470815][ T287] Code: 44 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c db fd ff ff 4c 89 ef e8 1c 32 f4 ff e9 ce fd ff ff e8 32 98 b6 ff 0f 0b e8 2b 98 b6 ff <0f> 0b 66 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 56 53 48 89 fb e8 [ 21.490269][ T287] RSP: 0018:ffffc9000098fbb8 EFLAGS: 00010293 [ 21.496157][ T287] RAX: ffffffff81b414b5 RBX: ffff88811cadf9c0 RCX: ffff888120a4bb40 [ 21.504018][ T287] RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000 [ 21.511789][ T287] RBP: ffffc9000098fc38 R08: ffffffff81b40dd3 R09: 0000000000000003 [ 21.519588][ T287] R10: fffff52000131f5c R11: dffffc0000000001 R12: 0000000000000001 [ 21.527400][ T287] R13: ffff88811cadf220 R14: ffff888110610198 R15: dffffc0000000000 [ 21.535224][ T287] FS: 00005555954ae380(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 21.543991][ T287] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.550407][ T287] CR2: 00005555954c7778 CR3: 000000011e6e5000 CR4: 00000000003506b0 [ 21.558216][ T287] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.566026][ T287] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 21.573956][ T287] Call Trace: [ 21.577091][ T287] ? __die_body+0x62/0xb0 [ 21.581249][ T287] ? die+0x88/0xb0 [ 21.584818][ T287] ? do_trap+0x1a4/0x310 [ 21.588891][ T287] ? may_delete+0x755/0x760 [ 21.593313][ T287] ? handle_invalid_op+0x95/0xc0 [ 21.598088][ T287] ? may_delete+0x755/0x760 [ 21.602690][ T287] ? exc_invalid_op+0x32/0x50 [ 21.607201][ T287] ? asm_exc_invalid_op+0x12/0x20 [ 21.612062][ T287] ? may_delete+0x73/0x760 [ 21.616313][ T287] ? may_delete+0x755/0x760 [ 21.620654][ T287] ? may_delete+0x755/0x760 [ 21.624993][ T287] ? may_delete+0x755/0x760 [ 21.629348][ T287] vfs_rmdir+0x2c/0x3f0 [ 21.633326][ T287] incfs_kill_sb+0x108/0x220 [ 21.637751][ T287] deactivate_locked_super+0xad/0x110 [ 21.642963][ T287] deactivate_super+0xbe/0xf0 [ 21.647472][ T287] cleanup_mnt+0x45c/0x510 [ 21.651725][ T287] __cleanup_mnt+0x19/0x20 [ 21.655976][ T287] task_work_run+0x129/0x190 [ 21.660426][ T287] ptrace_notify+0x29e/0x350 [ 21.664844][ T287] ? do_notify_parent+0xa10/0xa10 [ 21.669705][ T287] ? user_path_at_empty+0x40/0x50 [ 21.674565][ T287] ? __x64_sys_umount+0x122/0x170 [ 21.679625][ T287] ? path_umount+0xea0/0xea0 [ 21.684051][ T287] syscall_exit_to_user_mode+0xf5/0x1a0 [ 21.689434][ T287] do_syscall_64+0x40/0x70 [ 21.693684][ T287] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 21.699410][ T287] RIP: 0033:0x7fbb67689547 [ 21.703661][ T287] Code: 07 00 48 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 [ 21.723194][ T287] RSP: 002b:00007ffde620f848 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 [ 21.731445][ T287] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fbb67689547 [ 21.739244][ T287] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffde620f900 [ 21.747058][ T287] RBP: 00007ffde620f900 R08: 0000000000000000 R09: 0000000000000000 [ 21.754883][ T287] R10: 00000000ffffffff R11: 0000000000000206 R12: 00007ffde62109f0 [ 21.762781][ T287] R13: 00005555954b7700 R14: 431bde82d7b634db R15: 00007ffde6211a80 [ 21.770580][ T287] Modules linked in: [ 21.774653][ T287] ---[ end trace 2875872e78048014 ]--- [ 21.779976][ T287] RIP: 0010:may_delete+0x755/0x760 [ 21.784866][ T287] Code: 44 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c db fd ff ff 4c 89 ef e8 1c 32 f4 ff e9 ce fd ff ff e8 32 98 b6 ff 0f 0b e8 2b 98 b6 ff <0f> 0b 66 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 56 53 48 89 fb e8 [ 21.804342][ T287] RSP: 0018:ffffc9000098fbb8 EFLAGS: 00010293 [ 21.810229][ T287] RAX: ffffffff81b414b5 RBX: ffff88811cadf9c0 RCX: ffff888120a4bb40 [ 21.818010][ T287] RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000 [ 21.825884][ T287] RBP: ffffc9000098fc38 R08: ffffffff81b40dd3 R09: 0000000000000003 [ 21.833658][ T287] R10: fffff52000131f5c R11: dffffc0000000001 R12: 0000000000000001 [ 21.841466][ T287] R13: ffff88811cadf220 R14: ffff888110610198 R15: dffffc0000000000 [ 21.849291][ T287] FS: 00005555954ae380(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 21.858027][ T287] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.864473][ T287] CR2: 00005555954c7778 CR3: 000000011e6e5000 CR4: 00000000003506b0 [ 21.872278][ T287] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.880094][ T287] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 21.887898][ T287] Kernel panic - not syncing: Fatal exception [ 21.894171][ T287] Kernel Offset: disabled [ 21.898303][ T287] Rebooting in 86400 seconds..