./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1915158667 <...> Warning: Permanently added '10.128.1.10' (ED25519) to the list of known hosts. execve("./syz-executor1915158667", ["./syz-executor1915158667"], 0x7ffc40d80d50 /* 10 vars */) = 0 brk(NULL) = 0x555557202000 brk(0x555557202d40) = 0x555557202d40 arch_prctl(ARCH_SET_FS, 0x5555572023c0) = 0 set_tid_address(0x555557202690) = 287 set_robust_list(0x5555572026a0, 24) = 0 rseq(0x555557202ce0, 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-executor1915158667", 4096) = 28 getrandom("\xd7\x7e\x69\x28\xff\x15\x3d\x89", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555557202d40 brk(0x555557223d40) = 0x555557223d40 brk(0x555557224000) = 0x555557224000 mprotect(0x7f1fb2aa1000, 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 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=0x555557202690) = 289 ./strace-static-x86_64: Process 289 attached [pid 289] set_robust_list(0x5555572026a0, 24) = 0 [pid 289] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 289] setpgid(0, 0) = 0 [pid 289] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 289] write(3, "1000", 4) = 4 [pid 289] close(3) = 0 [pid 289] futex(0x7f1fb2aa73ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] rt_sigaction(SIGRT_1, {sa_handler=0x7f1fb2a43c00, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1fb2a35280}, NULL, 8) = 0 [pid 289] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 289] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1fb29bb000 [pid 289] mprotect(0x7f1fb29bc000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 289] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 289] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1fb29db990, parent_tid=0x7f1fb29db990, exit_signal=0, stack=0x7f1fb29bb000, stack_size=0x20300, tls=0x7f1fb29db6c0} => {parent_tid=[290]}, 88) = 290 [pid 289] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 289] futex(0x7f1fb2aa73e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] futex(0x7f1fb2aa73ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 290 attached [pid 290] set_robust_list(0x7f1fb29db9a0, 24) = 0 [pid 290] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 290] openat(AT_FDCWD, "/dev/fuse", O_RDWR) = 3 [pid 290] futex(0x7f1fb2aa73ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 289] <... futex resumed>) = 0 [pid 289] futex(0x7f1fb2aa73e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] futex(0x7f1fb2aa73ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 290] <... futex resumed>) = 1 [pid 290] mkdir("./file0", 0777) = 0 [pid 290] mount(NULL, "./file0", "fuse", 0, "fd=0x0000000000000003,rootmode=00000000000000000040000,user_id=00000000000000000000,group_id=0000000"...) = 0 [ 21.609540][ T24] audit: type=1400 audit(1709266575.570:66): avc: denied { execmem } for pid=287 comm="syz-executor191" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 21.616368][ T24] audit: type=1400 audit(1709266575.570:67): avc: denied { read write } for pid=287 comm="syz-executor191" 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 [ 21.625132][ T24] audit: type=1400 audit(1709266575.570:68): avc: denied { open } for pid=287 comm="syz-executor191" 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 [pid 290] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 289] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 289] futex(0x7f1fb2aa73fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1fb299a000 [pid 289] mprotect(0x7f1fb299b000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 289] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 289] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1fb29ba990, parent_tid=0x7f1fb29ba990, exit_signal=0, stack=0x7f1fb299a000, stack_size=0x20300, tls=0x7f1fb29ba6c0} => {parent_tid=[291]}, 88) = 291 [pid 289] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 289] futex(0x7f1fb2aa73f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] futex(0x7f1fb2aa73fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 291 attached [pid 291] set_robust_list(0x7f1fb29ba9a0, 24) = 0 [pid 291] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 291] read(3, "\x38\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\x20\x00\x00\x00\x00\x00\x02\x00\xfb\xff\xff\x83", 8224) = 56 [pid 291] futex(0x7f1fb2aa73fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 289] <... futex resumed>) = 0 [pid 289] futex(0x7f1fb2aa73f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] futex(0x7f1fb2aa73fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 291] <... futex resumed>) = 1 [pid 291] write(3, "\x50\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x07\x00\x00\x00\x08\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 291] futex(0x7f1fb2aa73fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 289] <... futex resumed>) = 0 [pid 289] futex(0x7f1fb2aa73f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 289] futex(0x7f1fb2aa73fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 291] <... futex resumed>) = 1 [pid 291] read(3, "\x30\x00\x00\x00\x1b\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\x22\x01\x00\x00\x00\x00\x00\x00\x00\x80\x01\x00\x00\x00\x00\x00", 8192) = 48 [pid 291] write(3, "\x20\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", 32 [pid 290] <... openat resumed>) = 4 [pid 290] futex(0x7f1fb2aa73ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 290] futex(0x7f1fb2aa73e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 291] <... write resumed>) = 32 [pid 291] futex(0x7f1fb2aa73fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 289] <... futex resumed>) = 0 [pid 289] futex(0x7f1fb2aa73e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 290] <... futex resumed>) = 0 [pid 289] <... futex resumed>) = 1 [pid 290] read(3, [pid 289] futex(0x7f1fb2aa73ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 291] <... futex resumed>) = 1 [ 21.641849][ T24] audit: type=1400 audit(1709266575.570:69): avc: denied { ioctl } for pid=287 comm="syz-executor191" 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 [ 21.667490][ T24] audit: type=1400 audit(1709266575.590:70): avc: denied { read write } for pid=289 comm="syz-executor191" name="fuse" dev="devtmpfs" ino=90 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fuse_device_t tclass=chr_file permissive=1 [pid 291] futex(0x7f1fb2aa73f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 289] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 289] futex(0x7f1fb2aa73f8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 289] futex(0x7f1fb2aa73fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 291] <... futex resumed>) = 0 [pid 291] openat(4, "./file0", O_RDONLY|O_TRUNC|O_NOFOLLOW [pid 290] <... read resumed>"\x2e\x00\x00\x00\x01\x00\x00\x00\x06\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x23\x01\x00\x00\x00\x00\x00\x00\x66\x69\x6c\x65\x30\x00", 8192) = 46 [pid 290] write(3, "\x90\x00\x00\x00\x00\x00\x00\x00\x06\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"..., 144) = 144 [pid 290] futex(0x7f1fb2aa73ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 21.690960][ T24] audit: type=1400 audit(1709266575.590:71): avc: denied { open } for pid=289 comm="syz-executor191" path="/dev/fuse" dev="devtmpfs" ino=90 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fuse_device_t tclass=chr_file permissive=1 [ 21.714183][ T24] audit: type=1400 audit(1709266575.590:72): avc: denied { mounton } for pid=289 comm="syz-executor191" path="/root/file0" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 21.736739][ T24] audit: type=1400 audit(1709266575.610:73): avc: denied { mount } for pid=289 comm="syz-executor191" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [ 21.747478][ T291] general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN [ 21.770094][ T291] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] [ 21.778338][ T291] CPU: 1 PID: 291 Comm: syz-executor191 Not tainted 5.10.209-syzkaller-00435-gdd976ecce2ce #0 [ 21.788409][ T291] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 [ 21.798322][ T291] RIP: 0010:path_openat+0x17ab/0x3000 [ 21.803508][ T291] Code: b6 04 30 84 c0 0f 85 d9 07 00 00 48 8b 44 24 30 80 60 01 f8 e9 69 ee ff ff e8 d1 03 b7 ff 4c 8b 64 24 20 4c 89 f8 48 c1 e8 03 <42> 0f b6 04 30 84 c0 0f 85 8f 07 00 00 41 8b 1f be 00 00 70 00 21 [ 21.822953][ T291] RSP: 0018:ffffc90000b67920 EFLAGS: 00010202 [ 21.828851][ T291] RAX: 0000000000000001 RBX: ffff88811a541998 RCX: ffff88811f278000 [ 21.836660][ T291] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000000 [ 21.844481][ T291] RBP: ffffc90000b67b50 R08: ffffffff81b65c1b R09: ffffed102391b20c [ 21.852286][ T291] R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88811c8d9030 [ 21.860096][ T291] R13: 0000000000028200 R14: dffffc0000000000 R15: 0000000000000008 [ 21.867907][ T291] FS: 00007f1fb29ba6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 21.876677][ T291] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.883093][ T291] CR2: 000055863210b0e8 CR3: 000000011f09d000 CR4: 00000000003506a0 [ 21.890906][ T291] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.898717][ T291] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 21.906523][ T291] Call Trace: [ 21.909660][ T291] ? __die_body+0x62/0xb0 [ 21.913823][ T291] ? die_addr+0x9f/0xd0 [ 21.917946][ T291] ? exc_general_protection+0x3ff/0x490 [ 21.923321][ T291] ? __dentry_kill+0x505/0x650 [ 21.927918][ T291] ? asm_exc_general_protection+0x1e/0x30 [ 21.933473][ T291] ? dput+0x8b/0x310 [ 21.937202][ T291] ? path_openat+0x17ab/0x3000 [ 21.941806][ T291] ? update_load_avg+0x541/0x1690 [ 21.946667][ T291] ? do_filp_open+0x460/0x460 [ 21.951176][ T291] do_filp_open+0x21c/0x460 [ 21.955516][ T291] ? vfs_tmpfile+0x2b0/0x2b0 [ 21.959946][ T291] ? get_unused_fd_flags+0x94/0xa0 [ 21.964888][ T291] do_sys_openat2+0x13f/0x6f0 [ 21.969401][ T291] ? cgroup_leave_frozen+0x164/0x2c0 [ 21.974522][ T291] ? ptrace_stop+0x6dc/0xa30 [ 21.978952][ T291] ? do_sys_open+0x220/0x220 [ 21.983384][ T291] ? _raw_spin_unlock_irq+0x4e/0x70 [ 21.988493][ T291] ? ptrace_notify+0x24c/0x350 [ 21.993099][ T291] __x64_sys_openat+0x243/0x290 [ 21.997783][ T291] ? __ia32_sys_open+0x270/0x270 [ 22.002566][ T291] ? syscall_enter_from_user_mode+0x57/0x1a0 [ 22.008370][ T291] do_syscall_64+0x34/0x70 [ 22.012627][ T291] entry_SYSCALL_64_after_hwframe+0x61/0xc6 [ 22.018353][ T291] RIP: 0033:0x7f1fb2a1dc99 [ 22.022606][ T291] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 81 18 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 [ 22.042045][ T291] RSP: 002b:00007f1fb29ba218 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 22.050297][ T291] RAX: ffffffffffffffda RBX: 00007f1fb2aa73f8 RCX: 00007f1fb2a1dc99 [pid 290] futex(0x7f1fb2aa73e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 289] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [ 22.058102][ T291] RDX: 0000000000020200 RSI: 0000000020000080 RDI: 0000000000000004 [ 22.065911][ T291] RBP: 00007f1fb2aa73f0 R08: 0000000000000000 R09: 0000000000000000 [ 22.073724][ T291] R10: 0000000000000010 R11: 0000000000000246 R12: 00007f1fb2a74144 [ 22.081538][ T291] R13: 00007f1fb2a72140 R14: 0030656c69662f2e R15: 00007ffcf9f75408 [ 22.089347][ T291] Modules linked in: [ 22.094077][ T291] ---[ end trace d7a78a5511bfd4a5 ]--- [ 22.099501][ T291] RIP: 0010:path_openat+0x17ab/0x3000 [ 22.104874][ T291] Code: b6 04 30 84 c0 0f 85 d9 07 00 00 48 8b 44 24 30 80 60 01 f8 e9 69 ee ff ff e8 d1 03 b7 ff 4c 8b 64 24 20 4c 89 f8 48 c1 e8 03 <42> 0f b6 04 30 84 c0 0f 85 8f 07 00 00 41 8b 1f be 00 00 70 00 21 [ 22.124580][ T291] RSP: 0018:ffffc90000b67920 EFLAGS: 00010202 [ 22.130461][ T291] RAX: 0000000000000001 RBX: ffff88811a541998 RCX: ffff88811f278000 [ 22.138552][ T291] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000000 [ 22.146534][ T291] RBP: ffffc90000b67b50 R08: ffffffff81b65c1b R09: ffffed102391b20c [ 22.154471][ T291] R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88811c8d9030 [ 22.162499][ T291] R13: 0000000000028200 R14: dffffc0000000000 R15: 0000000000000008 [ 22.170165][ T291] FS: 00007f1fb29ba6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 22.179069][ T291] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.185548][ T291] CR2: 0000555fffa840f8 CR3: 000000011f09d000 CR4: 00000000003506b0 [ 22.193355][ T291] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.201237][ T291] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 22.209144][ T291] Kernel panic - not syncing: Fatal exception [ 22.215173][ T291] Kernel Offset: disabled [ 22.219301][ T291] Rebooting in 86400 seconds..