./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2411789128 <...> [ 3.017904][ T24] audit: type=1400 audit(1684632393.499:9): avc: denied { append open } for pid=75 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 [ 3.020875][ T24] audit: type=1400 audit(1684632393.499:10): avc: denied { getattr } for pid=75 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 [ 3.294687][ T92] udevd[92]: starting version 3.2.11 [ 3.354308][ T93] udevd[93]: starting eudev-3.2.11 [ 11.818859][ T24] kauditd_printk_skb: 50 callbacks suppressed [ 11.818868][ T24] audit: type=1400 audit(1684632402.309:61): 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 [ 11.823057][ T24] audit: type=1400 audit(1684632402.309:62): 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 [ 11.825927][ T24] audit: type=1400 audit(1684632402.319:63): avc: denied { write } for pid=218 comm="sh" path="pipe:[13041]" dev="pipefs" ino=13041 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:sshd_t tclass=fifo_file permissive=1 [ 11.828933][ T24] audit: type=1400 audit(1684632402.319:64): 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 [ 11.831451][ T24] audit: type=1400 audit(1684632402.319:65): 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 '10.128.0.193' (ECDSA) to the list of known hosts. execve("./syz-executor2411789128", ["./syz-executor2411789128"], 0x7ffc004d03f0 /* 10 vars */) = 0 brk(NULL) = 0x5555557cc000 brk(0x5555557ccc40) = 0x5555557ccc40 arch_prctl(ARCH_SET_FS, 0x5555557cc300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 set_tid_address(0x5555557cc5d0) = 286 set_robust_list(0x5555557cc5e0, 24) = 0 rt_sigaction(SIGRTMIN, {sa_handler=0x7fd2db5e42b0, sa_mask=[], sa_flags=SA_RESTORER|SA_SIGINFO, sa_restorer=0x7fd2db5e4980}, NULL, 8) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7fd2db5e4350, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fd2db5e4980}, NULL, 8) = 0 rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2411789128", 4096) = 28 brk(0x5555557edc40) = 0x5555557edc40 brk(0x5555557ee000) = 0x5555557ee000 mprotect(0x7fd2db6a6000, 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(0x7fd2db6ac4cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fd2db5b4000 mprotect(0x7fd2db5b5000, 131072, PROT_READ|PROT_WRITE) = 0 clone(child_stack=0x7fd2db5d43f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[287], tls=0x7fd2db5d4700, child_tidptr=0x7fd2db5d49d0) = 287 futex(0x7fd2db6ac4c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 futex(0x7fd2db6ac4cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 287 attached [pid 287] set_robust_list(0x7fd2db5d49e0, 24) = 0 [pid 287] mkdirat(AT_FDCWD, "./file0", 000) = 0 [pid 287] futex(0x7fd2db6ac4cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 287] futex(0x7fd2db6ac4c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 286] <... futex resumed>) = 0 [pid 286] futex(0x7fd2db6ac4c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 286] futex(0x7fd2db6ac4cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 287] <... futex resumed>) = 0 [pid 287] openat(AT_FDCWD, "/dev/fuse", O_RDWR|O_CREAT, 000) = 3 [pid 287] futex(0x7fd2db6ac4cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 287] futex(0x7fd2db6ac4c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 286] <... futex resumed>) = 0 [pid 286] futex(0x7fd2db6ac4c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 286] futex(0x7fd2db6ac4cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 287] <... futex resumed>) = 0 [pid 287] mount(NULL, "./file0", "fuse", 0, "fd=0x0000000000000003,rootmode=00000000000000000040000,user_id=00000000000000000000,group_id=0000000"...) = 0 [pid 287] futex(0x7fd2db6ac4cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 286] <... futex resumed>) = 0 [pid 287] <... futex resumed>) = 1 [pid 286] futex(0x7fd2db6ac4c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 286] futex(0x7fd2db6ac4cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 287] 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 287] futex(0x7fd2db6ac4cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 286] <... futex resumed>) = 0 [pid 287] <... futex resumed>) = 1 [pid 286] futex(0x7fd2db6ac4c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 286] futex(0x7fd2db6ac4cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 287] read(3, [pid 286] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 286] futex(0x7fd2db6ac4cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 286] futex(0x7fd2db6ac4dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 286] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fd2db593000 [ 19.961427][ T24] audit: type=1400 audit(1684632410.459:66): avc: denied { execmem } for pid=286 comm="syz-executor241" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 19.965442][ T24] audit: type=1400 audit(1684632410.459:67): avc: denied { read write } for pid=286 comm="syz-executor241" 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 [ 19.970156][ T24] audit: type=1400 audit(1684632410.459:68): avc: denied { open } for pid=286 comm="syz-executor241" 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 [ 19.973475][ T24] audit: type=1400 audit(1684632410.459:69): avc: denied { mounton } for pid=286 comm="syz-executor241" path="/root/file0" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 19.976499][ T24] audit: type=1400 audit(1684632410.459:70): avc: denied { mount } for pid=286 comm="syz-executor241" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [pid 286] mprotect(0x7fd2db594000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 286] clone(child_stack=0x7fd2db5b33f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[289], tls=0x7fd2db5b3700, child_tidptr=0x7fd2db5b39d0) = 289 ./strace-static-x86_64: Process 289 attached [pid 286] futex(0x7fd2db6ac4d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 286] futex(0x7fd2db6ac4dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 289] set_robust_list(0x7fd2db5b39e0, 24) = 0 [pid 289] write(3, "\x50\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x07\x00\x00\x00\x1f\x00\x00\x00\x00\x00\x00\x00\x92\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\x00\x00\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 289] futex(0x7fd2db6ac4dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 286] <... futex resumed>) = 0 [pid 286] futex(0x7fd2db6ac4d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 286] futex(0x7fd2db6ac4dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 289] <... futex resumed>) = 1 [pid 289] openat(AT_FDCWD, "./file0/file0", O_RDONLY [pid 287] <... 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\x21\x01\x00\x00\x00\x00\x00\x00\x66\x69\x6c\x65\x30\x00", 8192) = 46 [pid 287] write(3, "\x94\x00\x00\x00\x00\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\xfc\xff\xff\xff\xff\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xfc\xff\xff\xff\xff\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 148) = 148 [pid 287] futex(0x7fd2db6ac4cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 20.024379][ T289] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN [ 20.035916][ T289] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] [ 20.044150][ T289] CPU: 0 PID: 289 Comm: syz-executor241 Not tainted 5.10.178-syzkaller-00127-g43c801dc3325 #0 [ 20.054212][ T289] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023 [ 20.064130][ T289] RIP: 0010:path_openat+0x17ab/0x3000 [ 20.069319][ T289] 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 c1 74 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 [ 20.088759][ T289] RSP: 0018:ffffc90000b17920 EFLAGS: 00010247 [ 20.094660][ T289] RAX: 0000000000000000 RBX: ffff88811ec4fb18 RCX: ffff88811edb2780 [ 20.102470][ T289] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000 [ 20.110293][ T289] RBP: ffffc90000b17b50 R08: ffffffff81b5b6db R09: ffffed1023880a50 [ 20.118093][ T289] R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88811c405250 [ 20.125907][ T289] R13: 0000000000008000 R14: dffffc0000000000 R15: 0000000000000004 [ 20.133718][ T289] FS: 00007fd2db5b3700(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 20.142570][ T289] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 20.148993][ T289] CR2: 00007fd2db5b3718 CR3: 000000011ec09000 CR4: 00000000003506b0 [ 20.156804][ T289] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 20.164616][ T289] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 20.172424][ T289] Call Trace: [ 20.175557][ T289] ? update_load_avg+0x541/0x1690 [ 20.180425][ T289] ? do_filp_open+0x460/0x460 [ 20.184929][ T289] do_filp_open+0x21c/0x460 [ 20.189266][ T289] ? vfs_tmpfile+0x2b0/0x2b0 [ 20.193694][ T289] ? get_unused_fd_flags+0x94/0xa0 [ 20.198639][ T289] do_sys_openat2+0x13f/0x6e0 [ 20.203156][ T289] ? cgroup_leave_frozen+0x164/0x2c0 [ 20.208273][ T289] ? ptrace_stop+0x6dc/0xa30 [ 20.212702][ T289] ? do_sys_open+0x220/0x220 [ 20.217128][ T289] ? _raw_spin_unlock_irq+0x4e/0x70 [ 20.222161][ T289] ? ptrace_notify+0x24c/0x350 [ 20.226762][ T289] __x64_sys_openat+0x243/0x290 [ 20.231452][ T289] ? __ia32_sys_open+0x270/0x270 [ 20.236223][ T289] ? syscall_enter_from_user_mode+0x57/0x1a0 [ 20.242041][ T289] do_syscall_64+0x34/0x70 [ 20.246290][ T289] entry_SYSCALL_64_after_hwframe+0x61/0xc6 [ 20.252019][ T289] RIP: 0033:0x7fd2db622469 [ 20.256279][ T289] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 81 14 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 b8 ff ff ff f7 d8 64 89 01 48 [ 20.275713][ T289] RSP: 002b:00007fd2db5b32f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 20.284221][ T289] RAX: ffffffffffffffda RBX: 00007fd2db6ac4d0 RCX: 00007fd2db622469 [ 20.292033][ T289] RDX: 0000000000000000 RSI: 0000000020000040 RDI: ffffffffffffff9c [ 20.299839][ T289] RBP: 00007fd2db67a01c R08: 0000000000000000 R09: 0000000000000000 [ 20.307652][ T289] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffdd3cd35e [ 20.315464][ T289] R13: 00007fd2db67a038 R14: 2f30656c69662f2e R15: 00007fd2db6ac4d8 [pid 287] futex(0x7fd2db6ac4c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 286] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [ 20.323277][ T289] Modules linked in: [ 20.327924][ T289] ---[ end trace 1893fe57b880c2fd ]--- [ 20.333212][ T289] RIP: 0010:path_openat+0x17ab/0x3000 [ 20.338395][ T289] 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 c1 74 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 [ 20.357869][ T289] RSP: 0018:ffffc90000b17920 EFLAGS: 00010247 [ 20.363750][ T289] RAX: 0000000000000000 RBX: ffff88811ec4fb18 RCX: ffff88811edb2780 [ 20.371571][ T289] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000 [ 20.379362][ T289] RBP: ffffc90000b17b50 R08: ffffffff81b5b6db R09: ffffed1023880a50 [ 20.387194][ T289] R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88811c405250 [ 20.394993][ T289] R13: 0000000000008000 R14: dffffc0000000000 R15: 0000000000000004 [ 20.402820][ T289] FS: 00007fd2db5b3700(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 20.411575][ T289] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 20.417984][ T289] CR2: 00007f24ae567ae0 CR3: 000000011ec09000 CR4: 00000000003506a0 [pid 286] exit_group(0) = ? [pid 287] <... futex resumed>) = ? [pid 287] +++ exited with 0 +++ [ 20.425824][ T289] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 20.433623][ T289] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 20.441457][ T289] Kernel panic - not syncing: Fatal exception [ 20.447507][ T289] Kernel Offset: disabled [ 20.451629][ T289] Rebooting in 86400 seconds..