./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1660330134 <...> Warning: Permanently added '10.128.0.22' (ED25519) to the list of known hosts. execve("./syz-executor1660330134", ["./syz-executor1660330134"], 0x7ffc438c8980 /* 10 vars */) = 0 brk(NULL) = 0x55555586f000 brk(0x55555586fd40) = 0x55555586fd40 arch_prctl(ARCH_SET_FS, 0x55555586f3c0) = 0 set_tid_address(0x55555586f690) = 291 set_robust_list(0x55555586f6a0, 24) = 0 rseq(0x55555586fce0, 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-executor1660330134", 4096) = 28 getrandom("\x13\x91\xe4\x5e\x2a\x30\x06\x8e", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55555586fd40 brk(0x555555890d40) = 0x555555890d40 brk(0x555555891000) = 0x555555891000 mprotect(0x7ff35cc5f000, 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 futex(0x7ff35cc6540c, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7ff35cc02160, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7ff35cbf37e0}, 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) = 0x7ff35cb7e000 mprotect(0x7ff35cb7f000, 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=0x7ff35cb9e990, parent_tid=0x7ff35cb9e990, exit_signal=0, stack=0x7ff35cb7e000, stack_size=0x20300, tls=0x7ff35cb9e6c0}./strace-static-x86_64: Process 292 attached [pid 292] set_robust_list(0x7ff35cb9e9a0, 24 [pid 291] <... clone3 resumed> => {parent_tid=[292]}, 88) = 292 [pid 291] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 291] futex(0x7ff35cc65408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 292] <... set_robust_list resumed>) = 0 [pid 292] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 292] mkdir("./file0", 000 [pid 291] futex(0x7ff35cc6540c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 292] <... mkdir resumed>) = 0 [pid 292] futex(0x7ff35cc6540c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 292] futex(0x7ff35cc65408, FUTEX_WAIT_PRIVATE, 0, NULL [pid 291] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 291] futex(0x7ff35cc65408, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 292] <... futex resumed>) = 0 [pid 292] openat(AT_FDCWD, "/dev/fuse", O_RDWR|O_CREAT, 000) = 3 [pid 291] futex(0x7ff35cc6540c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 292] futex(0x7ff35cc6540c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 291] <... futex resumed>) = 0 [pid 291] futex(0x7ff35cc65408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 291] futex(0x7ff35cc6540c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 292] mount(NULL, "./file0", "fuse", 0, "fd=0x0000000000000003,rootmode=0000000000000000040000,user_id=00000000000000000000,group_id=00000000"...) = 0 [pid 292] futex(0x7ff35cc6540c, FUTEX_WAKE_PRIVATE, 1000000 [pid 291] <... futex resumed>) = 0 [pid 292] <... futex resumed>) = 1 [pid 291] futex(0x7ff35cc65408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 291] futex(0x7ff35cc6540c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 292] 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 292] futex(0x7ff35cc6540c, FUTEX_WAKE_PRIVATE, 1000000 [pid 291] <... futex resumed>) = 0 [pid 292] <... futex resumed>) = 1 [pid 291] futex(0x7ff35cc65408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 291] futex(0x7ff35cc6540c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 292] write(3, "\x50\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x07\x00\x00\x00\x27\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) = 80 [pid 292] futex(0x7ff35cc6540c, FUTEX_WAKE_PRIVATE, 1000000 [pid 291] <... futex resumed>) = 0 [pid 292] <... futex resumed>) = 1 [pid 291] futex(0x7ff35cc65408, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 291] futex(0x7ff35cc6540c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [ 20.250560][ T30] audit: type=1400 audit(1695594729.415:66): avc: denied { execmem } for pid=291 comm="syz-executor166" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 20.260243][ T30] audit: type=1400 audit(1695594729.425:67): avc: denied { read write } for pid=291 comm="syz-executor166" 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 [ 20.268176][ T30] audit: type=1400 audit(1695594729.425:68): avc: denied { open } for pid=291 comm="syz-executor166" 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 [pid 292] rename("./file0/../file0/file0", "./file0/../file0/file0" [pid 291] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 291] futex(0x7ff35cc6541c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 291] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7ff35cb5d000 [pid 291] mprotect(0x7ff35cb5e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 291] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 291] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7ff35cb7d990, parent_tid=0x7ff35cb7d990, exit_signal=0, stack=0x7ff35cb5d000, stack_size=0x20300, tls=0x7ff35cb7d6c0}./strace-static-x86_64: Process 294 attached => {parent_tid=[294]}, 88) = 294 [pid 291] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 291] futex(0x7ff35cc65418, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 291] futex(0x7ff35cc6541c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 294] set_robust_list(0x7ff35cb7d9a0, 24) = 0 [pid 294] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 294] read(3, "\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\x24\x01\x00\x00\x00\x00\x00\x00\x66\x69\x6c\x65\x30\x00", 8224) = 46 [pid 294] futex(0x7ff35cc6541c, FUTEX_WAKE_PRIVATE, 1000000 [pid 291] <... futex resumed>) = 0 [pid 291] futex(0x7ff35cc65418, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 291] futex(0x7ff35cc6541c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 294] <... futex resumed>) = 1 [pid 294] write(3, "\xa0\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x10\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x80\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x0a\x5a\x00\x00\x00\x00\x00\x00\xfa\x00\x00\x00\x00\x00\x00\x00\x06\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00"..., 160) = 160 [pid 294] futex(0x7ff35cc6541c, FUTEX_WAKE_PRIVATE, 1000000 [pid 291] <... futex resumed>) = 0 [pid 294] <... futex resumed>) = 1 [ 20.281046][ T30] audit: type=1400 audit(1695594729.425:69): avc: denied { mounton } for pid=291 comm="syz-executor166" path="/root/file0" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 20.303678][ T30] audit: type=1400 audit(1695594729.425:70): avc: denied { mount } for pid=291 comm="syz-executor166" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [ 20.329048][ T292] general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN [ 20.340601][ T292] KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017] [ 20.349045][ T292] CPU: 0 PID: 292 Comm: syz-executor166 Not tainted 5.15.131-syzkaller-00653-gea586874d2f9 #0 [ 20.359090][ T292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 20.368998][ T292] RIP: 0010:do_renameat2+0x62e/0x1480 [ 20.374181][ T292] Code: 08 3c b2 ff 41 89 de 4c 8b 64 24 40 e9 0f 06 00 00 4c 89 b4 24 f0 00 00 00 49 89 de 49 c1 ee 03 48 b8 00 00 00 00 00 fc ff df <41> 0f b6 04 06 84 c0 4c 8b 64 24 40 0f 85 2d 08 00 00 48 89 1c 24 [ 20.393623][ T292] RSP: 0018:ffffc900007d7c40 EFLAGS: 00010202 [pid 294] futex(0x7ff35cc65418, FUTEX_WAIT_PRIVATE, 0, NULL [pid 291] exit_group(0) = ? [pid 294] <... futex resumed>) = ? [pid 294] +++ exited with 0 +++ [ 20.399697][ T292] RAX: dffffc0000000000 RBX: 0000000000000010 RCX: ffff88811e98cf00 [ 20.407681][ T292] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000000 [ 20.415577][ T292] RBP: ffffc900007d7ef8 R08: ffffffff81bff470 R09: ffffed1023929072 [ 20.423391][ T292] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 [ 20.431199][ T292] R13: ffff88811c948330 R14: 0000000000000002 R15: ffff8881001c1520 [ 20.439014][ T292] FS: 00007ff35cb9e6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 20.447794][ T292] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 20.454220][ T292] CR2: 00005621ec0cc318 CR3: 000000011e641000 CR4: 00000000003506b0 [ 20.462013][ T292] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 20.469909][ T292] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 20.477720][ T292] Call Trace: [ 20.480842][ T292] [ 20.483624][ T292] ? __die_body+0x62/0xb0 [ 20.487811][ T292] ? die_addr+0x9f/0xd0 [ 20.491787][ T292] ? exc_general_protection+0x311/0x4b0 [ 20.497174][ T292] ? asm_exc_general_protection+0x27/0x30 [ 20.502720][ T292] ? dput+0x90/0x320 [ 20.506449][ T292] ? do_renameat2+0x62e/0x1480 [ 20.511071][ T292] ? fsnotify_move+0x460/0x460 [ 20.515675][ T292] ? __check_object_size+0x2ec/0x3d0 [ 20.520771][ T292] ? strncpy_from_user+0x18e/0x2d0 [ 20.525893][ T292] ? getname_flags+0x1fd/0x520 [ 20.530490][ T292] __x64_sys_rename+0x86/0x90 [ 20.535006][ T292] do_syscall_64+0x3d/0xb0 [ 20.539256][ T292] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 20.546288][ T292] RIP: 0033:0x7ff35cbdc2b9 [ 20.550547][ T292] 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 [ 20.570241][ T292] RSP: 002b:00007ff35cb9e218 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 [ 20.578750][ T292] RAX: ffffffffffffffda RBX: 00007ff35cc65408 RCX: 00007ff35cbdc2b9 [ 20.587084][ T292] RDX: 00007ff35cbdc2b9 RSI: 0000000020000140 RDI: 0000000020000100 [ 20.596466][ T292] RBP: 00007ff35cc65400 R08: 0000000000000000 R09: 0000000000000000 [ 20.604267][ T292] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff35cc33018 [ 20.612075][ T292] R13: 0030656c69662f2e R14: 0030656c69662f30 R15: 00007ff35cc3300e [ 20.619893][ T292] [ 20.622841][ T292] Modules linked in: [ 20.626745][ T292] ---[ end trace a020432d5589457c ]--- [ 20.632010][ T292] RIP: 0010:do_renameat2+0x62e/0x1480 [ 20.637282][ T292] Code: 08 3c b2 ff 41 89 de 4c 8b 64 24 40 e9 0f 06 00 00 4c 89 b4 24 f0 00 00 00 49 89 de 49 c1 ee 03 48 b8 00 00 00 00 00 fc ff df <41> 0f b6 04 06 84 c0 4c 8b 64 24 40 0f 85 2d 08 00 00 48 89 1c 24 [ 20.657154][ T292] RSP: 0018:ffffc900007d7c40 EFLAGS: 00010202 [ 20.663007][ T292] RAX: dffffc0000000000 RBX: 0000000000000010 RCX: ffff88811e98cf00 [ 20.670774][ T292] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000000 [ 20.678650][ T292] RBP: ffffc900007d7ef8 R08: ffffffff81bff470 R09: ffffed1023929072 [ 20.686424][ T292] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 [ 20.694266][ T292] R13: ffff88811c948330 R14: 0000000000000002 R15: ffff8881001c1520 [ 20.702031][ T292] FS: 00007ff35cb9e6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 20.710825][ T292] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 20.717256][ T292] CR2: 00005621ec0cc318 CR3: 000000011e641000 CR4: 00000000003506b0 [ 20.725051][ T292] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 20.732874][ T292] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 20.740644][ T292] Kernel panic - not syncing: Fatal exception [ 20.746809][ T292] Kernel Offset: disabled [ 20.750939][ T292] Rebooting in 86400 seconds..