./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1556944082 <...> [ 3.880342][ T115] scsi_id (115) used greatest stack depth: 23120 bytes left [ 4.137258][ T124] S35iptables (124) used greatest stack depth: 22848 bytes left [ 7.042927][ T106] udevd (106) used greatest stack depth: 22576 bytes left [ 11.955256][ T30] kauditd_printk_skb: 50 callbacks suppressed [ 11.955266][ T30] audit: type=1400 audit(1701694728.669:61): avc: denied { transition } for pid=224 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 [ 11.959887][ T30] audit: type=1400 audit(1701694728.669:62): avc: denied { noatsecure } for pid=224 comm="sshd" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 11.963017][ T30] audit: type=1400 audit(1701694728.669:63): avc: denied { write } for pid=224 comm="sh" path="pipe:[12412]" dev="pipefs" ino=12412 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:sshd_t tclass=fifo_file permissive=1 [ 11.967394][ T30] audit: type=1400 audit(1701694728.669:64): avc: denied { rlimitinh } for pid=224 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 11.971032][ T30] audit: type=1400 audit(1701694728.669:65): avc: denied { siginh } for pid=224 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 13.133432][ T225] sshd (225) used greatest stack depth: 22288 bytes left Warning: Permanently added '10.128.0.222' (ED25519) to the list of known hosts. execve("./syz-executor1556944082", ["./syz-executor1556944082"], 0x7ffcb832a260 /* 10 vars */) = 0 brk(NULL) = 0x55555704c000 brk(0x55555704cd40) = 0x55555704cd40 arch_prctl(ARCH_SET_FS, 0x55555704c3c0) = 0 set_tid_address(0x55555704c690) = 292 set_robust_list(0x55555704c6a0, 24) = 0 rseq(0x55555704cce0, 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-executor1556944082", 4096) = 28 getrandom("\x26\x17\xd7\xbb\x66\x85\x94\xb0", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55555704cd40 brk(0x55555706dd40) = 0x55555706dd40 brk(0x55555706e000) = 0x55555706e000 mprotect(0x7f379e1d4000, 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 mkdir("./syzkaller.buz82D", 0700) = 0 chmod("./syzkaller.buz82D", 0777) = 0 chdir("./syzkaller.buz82D") = 0 futex(0x7f379e1da40c, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7f379e1738f0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f379e164a70}, NULL, 8) = 0 rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f379e0ef000 mprotect(0x7f379e0f0000, 131072, PROT_READ|PROT_WRITE) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f379e10f990, parent_tid=0x7f379e10f990, exit_signal=0, stack=0x7f379e0ef000, stack_size=0x20300, tls=0x7f379e10f6c0} => {parent_tid=[293]}, 88) = 293 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 futex(0x7f379e1da408, FUTEX_WAKE_PRIVATE, 1000000) = 0 futex(0x7f379e1da40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 293 attached [pid 293] set_robust_list(0x7f379e10f9a0, 24) = 0 [pid 293] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 293] mkdir("./file0", 000) = 0 [pid 293] futex(0x7f379e1da40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 292] <... futex resumed>) = 0 [pid 292] futex(0x7f379e1da408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 292] futex(0x7f379e1da40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 293] <... futex resumed>) = 1 [pid 293] openat(AT_FDCWD, "/dev/fuse", O_RDWR|O_CREAT, 000) = 3 [pid 293] futex(0x7f379e1da40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 292] <... futex resumed>) = 0 [pid 292] futex(0x7f379e1da408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 292] futex(0x7f379e1da40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 293] <... futex resumed>) = 1 [pid 293] mount(NULL, "./file0", "fuse", 0, "fd=0x0000000000000003,rootmode=0000000000000000040000,user_id=00000000000000000000,group_id=00000000"...) = 0 [pid 293] futex(0x7f379e1da40c, FUTEX_WAKE_PRIVATE, 1000000 [pid 292] <... futex resumed>) = 0 [pid 292] futex(0x7f379e1da408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 292] futex(0x7f379e1da40c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 293] <... futex resumed>) = 1 [ 20.075733][ T30] audit: type=1400 audit(1701694736.779:66): avc: denied { execmem } for pid=292 comm="syz-executor155" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 20.095089][ T30] audit: type=1400 audit(1701694736.789:67): avc: denied { read write } for pid=292 comm="syz-executor155" name="fuse" dev="devtmpfs" ino=91 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fuse_device_t tclass=chr_file permissive=1 [pid 293] rmdir("./file0/../file0/file0" [pid 292] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 292] futex(0x7f379e1da41c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 292] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f379e0ce000 [pid 292] mprotect(0x7f379e0cf000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 292] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 292] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f379e0ee990, parent_tid=0x7f379e0ee990, exit_signal=0, stack=0x7f379e0ce000, stack_size=0x20300, tls=0x7f379e0ee6c0} => {parent_tid=[295]}, 88) = 295 [pid 292] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 292] futex(0x7f379e1da418, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 292] futex(0x7f379e1da41c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 295 attached [pid 295] set_robust_list(0x7f379e0ee9a0, 24) = 0 [pid 295] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 295] read(3, "\x68\x00\x00\x00\x1a\x00\x00\x00\x02\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\x07\x00\x00\x00\x24\x00\x00\x00\x00\x00\x02\x00\xfb\xff\xff\xf3\xff\xff\xff\xff\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"..., 8224) = 104 [pid 295] futex(0x7f379e1da41c, FUTEX_WAKE_PRIVATE, 1000000 [pid 292] <... futex resumed>) = 0 [pid 292] futex(0x7f379e1da418, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 292] futex(0x7f379e1da41c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 295] <... futex resumed>) = 1 [ 20.118467][ T30] audit: type=1400 audit(1701694736.789:68): avc: denied { open } for pid=292 comm="syz-executor155" path="/dev/fuse" dev="devtmpfs" ino=91 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fuse_device_t tclass=chr_file permissive=1 [ 20.143116][ T30] audit: type=1400 audit(1701694736.799:69): avc: denied { mounton } for pid=292 comm="syz-executor155" path="/root/syzkaller.buz82D/file0" dev="sda1" ino=1928 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [pid 295] read(3, [pid 292] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 292] futex(0x7f379e1da41c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 292] futex(0x7f379e1da41c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 292] futex(0x7f379e1da41c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 292] futex(0x7f379e1da42c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 292] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f379e0ad000 [pid 292] mprotect(0x7f379e0ae000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 292] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 292] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f379e0cd990, parent_tid=0x7f379e0cd990, exit_signal=0, stack=0x7f379e0ad000, stack_size=0x20300, tls=0x7f379e0cd6c0} => {parent_tid=[296]}, 88) = 296 ./strace-static-x86_64: Process 296 attached [pid 292] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 292] futex(0x7f379e1da428, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 292] futex(0x7f379e1da42c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 296] set_robust_list(0x7f379e0cd9a0, 24) = 0 [pid 296] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 296] write(3, "\x50\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x07\x00\x00\x00\x05\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", 80 [pid 295] <... read resumed>"\x2e\x00\x00\x00\x01\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x25\x01\x00\x00\x00\x00\x00\x00\x66\x69\x6c\x65\x30\x00", 8192) = 46 [pid 295] write(3, "\x90\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x05\x00\x00\x00\x00\x00\x00\x00\x03\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\xff\x03\x00\x00\x05\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\xff\xff\xff\x7f\x00\x00\x00\x00\xb6\x00\x00\x00\x00\x00\x00\x00\x00\x08\x00\x00"..., 144 [pid 296] <... write resumed>) = 80 [pid 295] <... write resumed>) = 144 [pid 295] futex(0x7f379e1da41c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 295] futex(0x7f379e1da418, FUTEX_WAIT_PRIVATE, 0, NULL [pid 296] futex(0x7f379e1da42c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 296] futex(0x7f379e1da428, FUTEX_WAIT_PRIVATE, 0, NULL [pid 292] <... futex resumed>) = 0 [ 20.167211][ T30] audit: type=1400 audit(1701694736.799:70): avc: denied { mount } for pid=292 comm="syz-executor155" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [ 20.197227][ T293] general protection fault, probably for non-canonical address 0xdffffc0000000007: 0000 [#1] PREEMPT SMP KASAN [ 20.208771][ T293] KASAN: null-ptr-deref in range [0x0000000000000038-0x000000000000003f] [ 20.217016][ T293] CPU: 0 PID: 293 Comm: syz-executor155 Not tainted 5.15.138-syzkaller-00281-g0e7c7966689d #0 [ 20.227083][ T293] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 [ 20.236980][ T293] RIP: 0010:do_rmdir+0x339/0x630 [ 20.241748][ T293] Code: ff 4c 89 64 24 50 72 0d e8 a4 79 b2 ff 45 89 fc e9 99 00 00 00 49 8d 5f 30 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 df e8 c9 7e f4 ff 48 83 3b 00 74 5d e8 6e [ 20.261283][ T293] RSP: 0018:ffffc900007d7de0 EFLAGS: 00010202 [ 20.267179][ T293] RAX: 0000000000000007 RBX: 0000000000000038 RCX: dffffc0000000000 [pid 292] exit_group(0) = ? [pid 295] <... futex resumed>) = ? [pid 295] +++ exited with 0 +++ [pid 296] <... futex resumed>) = ? [pid 296] +++ exited with 0 +++ [ 20.274994][ T293] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000 [ 20.282806][ T293] RBP: ffffc900007d7f08 R08: ffffffff81c01f70 R09: ffffed10237232b6 [ 20.290616][ T293] R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88811b919580 [ 20.298423][ T293] R13: ffffc900007d7e60 R14: 1ffff110237232b0 R15: 0000000000000008 [ 20.306237][ T293] FS: 00007f379e10f6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 20.315002][ T293] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 20.321424][ T293] CR2: 00007f379e0cdd58 CR3: 000000011e972000 CR4: 00000000003506b0 [ 20.329239][ T293] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 20.337056][ T293] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 20.344863][ T293] Call Trace: [ 20.347984][ T293] [ 20.350760][ T293] ? __die_body+0x62/0xb0 [ 20.355011][ T293] ? die_addr+0x9f/0xd0 [ 20.359003][ T293] ? exc_general_protection+0x311/0x4b0 [ 20.364393][ T293] ? asm_exc_general_protection+0x27/0x30 [ 20.369990][ T293] ? dput+0x90/0x320 [ 20.373681][ T293] ? do_rmdir+0x339/0x630 [ 20.378621][ T293] ? d_delete_notify+0x160/0x160 [ 20.383405][ T293] ? getname_flags+0x1fd/0x520 [ 20.388001][ T293] __x64_sys_rmdir+0x49/0x50 [ 20.392419][ T293] do_syscall_64+0x3d/0xb0 [ 20.396671][ T293] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 20.402400][ T293] RIP: 0033:0x7f379e14d549 [ 20.406658][ T293] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 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 b0 ff ff ff f7 d8 64 89 01 48 [ 20.426095][ T293] RSP: 002b:00007f379e10f218 EFLAGS: 00000246 ORIG_RAX: 0000000000000054 [ 20.434337][ T293] RAX: ffffffffffffffda RBX: 00007f379e1da408 RCX: 00007f379e14d549 [ 20.442152][ T293] RDX: 00007f379e14d549 RSI: 00000000000f4240 RDI: 0000000020000080 [ 20.449960][ T293] RBP: 00007f379e1da400 R08: 0000000000000000 R09: 0000000000000000 [ 20.457771][ T293] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f379e1a701c [ 20.465585][ T293] R13: 00007f379e1a7038 R14: 00007f379e1a500e R15: 0030656c69662f30 [ 20.473398][ T293] [ 20.476261][ T293] Modules linked in: [ 20.480694][ T293] ---[ end trace e2908ce7b846af04 ]--- [ 20.485960][ T293] RIP: 0010:do_rmdir+0x339/0x630 [ 20.490770][ T293] Code: ff 4c 89 64 24 50 72 0d e8 a4 79 b2 ff 45 89 fc e9 99 00 00 00 49 8d 5f 30 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 df e8 c9 7e f4 ff 48 83 3b 00 74 5d e8 6e [ 20.510223][ T293] RSP: 0018:ffffc900007d7de0 EFLAGS: 00010202 [ 20.516075][ T293] RAX: 0000000000000007 RBX: 0000000000000038 RCX: dffffc0000000000 [ 20.523927][ T293] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000 [ 20.531739][ T293] RBP: ffffc900007d7f08 R08: ffffffff81c01f70 R09: ffffed10237232b6 [ 20.539565][ T293] R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88811b919580 [ 20.547424][ T293] R13: ffffc900007d7e60 R14: 1ffff110237232b0 R15: 0000000000000008 [ 20.555219][ T293] FS: 00007f379e10f6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 20.564006][ T293] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 20.570425][ T293] CR2: 00007f379e0cdd58 CR3: 000000011e972000 CR4: 00000000003506b0 [ 20.578243][ T293] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 20.586039][ T293] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 20.593872][ T293] Kernel panic - not syncing: Fatal exception [ 20.599924][ T293] Kernel Offset: disabled [ 20.604049][ T293] Rebooting in 86400 seconds..