./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3374542959 <...> Warning: Permanently added '10.128.0.199' (ED25519) to the list of known hosts. execve("./syz-executor3374542959", ["./syz-executor3374542959"], 0x7ffd1f776c50 /* 10 vars */) = 0 brk(NULL) = 0x555556fcc000 brk(0x555556fccd40) = 0x555556fccd40 arch_prctl(ARCH_SET_FS, 0x555556fcc3c0) = 0 set_tid_address(0x555556fcc690) = 296 set_robust_list(0x555556fcc6a0, 24) = 0 rseq(0x555556fccce0, 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-executor3374542959", 4096) = 28 getrandom("\xff\xd2\x7c\x51\x88\xa1\x91\x04", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556fccd40 brk(0x555556fedd40) = 0x555556fedd40 brk(0x555556fee000) = 0x555556fee000 mprotect(0x7f7623189000, 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 write(1, "executing program\n", 18executing program ) = 18 futex(0x7f762318f3cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7f7623125670, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f7623116cf0}, 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) = 0x7f762309e000 mprotect(0x7f762309f000, 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=0x7f76230be990, parent_tid=0x7f76230be990, exit_signal=0, stack=0x7f762309e000, stack_size=0x20300, tls=0x7f76230be6c0} => {parent_tid=[297]}, 88) = 297 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 futex(0x7f762318f3c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 futex(0x7f762318f3cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 297 attached [pid 297] set_robust_list(0x7f76230be9a0, 24) = 0 [pid 297] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 297] openat(AT_FDCWD, "/dev/fuse", O_RDWR) = 3 [pid 297] futex(0x7f762318f3cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 296] <... futex resumed>) = 0 [pid 296] futex(0x7f762318f3c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 296] futex(0x7f762318f3cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 297] <... futex resumed>) = 1 [pid 297] mkdir("./file0", 0777) = 0 [pid 297] mount(NULL, "./file0", "fuse", 0, "fd=0x0000000000000003,rootmode=00000000000000000040000,user_id=00000000000000000000,group_id=0000000"...) = 0 [ 24.270714][ T28] audit: type=1400 audit(1727141481.506:66): avc: denied { execmem } for pid=296 comm="syz-executor337" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 24.290004][ T28] audit: type=1400 audit(1727141481.506:67): avc: denied { read write } for pid=296 comm="syz-executor337" name="fuse" dev="devtmpfs" ino=93 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fuse_device_t tclass=chr_file permissive=1 [pid 297] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 296] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 296] futex(0x7f762318f3dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 296] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f762307d000 [pid 296] mprotect(0x7f762307e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 296] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 296] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f762309d990, parent_tid=0x7f762309d990, exit_signal=0, stack=0x7f762307d000, stack_size=0x20300, tls=0x7f762309d6c0} => {parent_tid=[299]}, 88) = 299 [pid 296] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 296] futex(0x7f762318f3d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 296] futex(0x7f762318f3dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 299 attached [pid 299] set_robust_list(0x7f762309d9a0, 24) = 0 [pid 299] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 299] 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\x25\x00\x00\x00\x00\x00\x02\x00\xfb\xff\xff\x73\x01\x00\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 8192) = 104 [pid 299] write(3, "\x14\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x07\x00\x00\x00", 20) = 20 [pid 299] futex(0x7f762318f3dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 296] <... futex resumed>) = 0 [pid 296] futex(0x7f762318f3d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 296] futex(0x7f762318f3dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 299] <... futex resumed>) = 1 [pid 299] 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\x29\x01\x00\x00\x00\x00\x00\x00\x00\x80\x01\x00\x00\x00\x00\x00", 8192) = 48 [pid 299] 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 297] <... openat resumed>) = 4 [pid 297] chdir("./file0" [pid 299] <... write resumed>) = 32 [pid 299] futex(0x7f762318f3dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 296] <... futex resumed>) = 0 [pid 296] futex(0x7f762318f3d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 296] futex(0x7f762318f3dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 299] <... futex resumed>) = 1 [pid 299] read(3, "\x30\x00\x00\x00\x22\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\x29\x01\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00", 8192) = 48 [pid 299] write(3, "\x10\x00\x00\x00\x00\x00\x00\x00\x06\x00\x00\x00\x00\x00\x00\x00", 16 [pid 297] <... chdir resumed>) = 0 [pid 297] futex(0x7f762318f3cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 297] futex(0x7f762318f3c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 299] <... write resumed>) = 16 [pid 299] futex(0x7f762318f3dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 296] <... futex resumed>) = 0 [pid 296] futex(0x7f762318f3c8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 297] <... futex resumed>) = 0 [pid 296] futex(0x7f762318f3cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 297] read(3, [pid 299] <... futex resumed>) = 1 [ 24.313392][ T28] audit: type=1400 audit(1727141481.506:68): avc: denied { open } for pid=296 comm="syz-executor337" path="/dev/fuse" dev="devtmpfs" ino=93 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fuse_device_t tclass=chr_file permissive=1 [ 24.336780][ T28] audit: type=1400 audit(1727141481.506:69): avc: denied { mounton } for pid=296 comm="syz-executor337" path="/root/file0" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [pid 299] futex(0x7f762318f3d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 296] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 296] futex(0x7f762318f3d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 296] futex(0x7f762318f3dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 299] <... futex resumed>) = 0 [pid 299] open("./file0/../file0", O_ACCMODE|O_CREAT|O_DIRECT|O_LARGEFILE|O_NOATIME|0x3c, 002 [pid 297] <... read resumed>"\x2e\x00\x00\x00\x01\x00\x00\x00\x08\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x2b\x01\x00\x00\x00\x00\x00\x00\x66\x69\x6c\x65\x30\x00", 8192) = 46 [pid 297] write(3, "\x90\x00\x00\x00\x00\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\x00\x00\x00\x00\x00\x00\x00\x00\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 297] futex(0x7f762318f3cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 24.359422][ T28] audit: type=1400 audit(1727141481.506:70): avc: denied { mount } for pid=296 comm="syz-executor337" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [ 24.399247][ T299] general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN [ 24.410785][ T299] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] [ 24.419143][ T299] CPU: 0 PID: 299 Comm: syz-executor337 Not tainted 6.1.99-syzkaller-00071-g41e1c6f93780 #0 [ 24.429031][ T299] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 [ 24.438923][ T299] RIP: 0010:step_into+0x1c4/0x1090 [ 24.443868][ T299] Code: c0 0f 85 bb 0b 00 00 44 8b 3b 43 80 3c 34 00 74 0a 48 8b 7c 24 10 e8 fb b4 f2 ff 48 8b 9c 24 d8 00 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 04 30 84 c0 0f 85 a8 0b 00 00 8b 1b 89 de 81 e6 00 00 07 [ 24.463309][ T299] RSP: 0018:ffffc90000ea76a0 EFLAGS: 00010202 [ 24.469211][ T299] RAX: 0000000000000001 RBX: 0000000000000008 RCX: ffff88810085e540 [ 24.477024][ T299] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 24.484834][ T299] RBP: ffffc90000ea77f0 R08: ffffffff81ca24b9 R09: ffffed10224d389d [ 24.492682][ T299] R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff920001d4eef [ 24.500459][ T299] R13: ffffc90000ea7b80 R14: dffffc0000000000 R15: 0000000000000011 [ 24.508267][ T299] FS: 00007f762309d6c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 24.517035][ T299] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.523456][ T299] CR2: 00007ffd677d7020 CR3: 00000001001f2000 CR4: 00000000003506b0 [ 24.531273][ T299] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.539080][ T299] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.546896][ T299] Call Trace: [ 24.550017][ T299] [ 24.552794][ T299] ? __die_body+0x62/0xb0 [ 24.556958][ T299] ? die_addr+0x9f/0xd0 [ 24.561044][ T299] ? exc_general_protection+0x317/0x4c0 [ 24.566426][ T299] ? asm_exc_general_protection+0x27/0x30 [ 24.571978][ T299] ? step_into+0x179/0x1090 [ 24.576313][ T299] ? step_into+0x1c4/0x1090 [ 24.580657][ T299] ? __lookup_slow+0x36e/0x3e0 [ 24.585251][ T299] ? lookup_one_len+0x2c0/0x2c0 [ 24.589941][ T299] ? set_root+0x400/0x400 [ 24.594107][ T299] link_path_walk+0x72c/0xee0 [ 24.598638][ T299] ? handle_lookup_down+0x130/0x130 [ 24.603765][ T299] path_openat+0x25f/0x2d60 [ 24.608095][ T299] ? kasan_save_alloc_info+0x1f/0x30 [ 24.613214][ T299] ? slab_post_alloc_hook+0x53/0x2c0 [ 24.618336][ T299] ? getname_flags+0xba/0x520 [ 24.622860][ T299] ? getname+0x19/0x20 [ 24.626755][ T299] ? __x64_sys_open+0x221/0x270 [ 24.631442][ T299] ? entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 24.637349][ T299] ? do_filp_open+0x480/0x480 [ 24.641858][ T299] do_filp_open+0x230/0x480 [ 24.646195][ T299] ? vfs_tmpfile+0x480/0x480 [ 24.650626][ T299] ? alloc_fd+0x4fa/0x5a0 [ 24.654789][ T299] do_sys_openat2+0x151/0x870 [ 24.659302][ T299] ? memset+0x35/0x40 [ 24.663121][ T299] ? do_sys_open+0x220/0x220 [ 24.667550][ T299] ? ptrace_notify+0x249/0x350 [ 24.672149][ T299] __x64_sys_open+0x221/0x270 [ 24.676662][ T299] ? do_sys_openat2+0x870/0x870 [ 24.681350][ T299] x64_sys_call+0x36/0x9a0 [ 24.685607][ T299] do_syscall_64+0x3b/0xb0 [ 24.689850][ T299] ? clear_bhb_loop+0x55/0xb0 [ 24.694365][ T299] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 24.700103][ T299] RIP: 0033:0x7f76230ff799 [ 24.704349][ T299] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 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 [ 24.723795][ T299] RSP: 002b:00007f762309d218 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 24.732146][ T299] RAX: ffffffffffffffda RBX: 00007f762318f3d8 RCX: 00007f76230ff799 [ 24.739957][ T299] RDX: 0000000000000002 RSI: 000000000004c07f RDI: 0000000020000300 [ 24.747978][ T299] RBP: 00007f762318f3d0 R08: 0000000000000000 R09: 0000000000000000 [ 24.755791][ T299] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f762315c0fc [ 24.763600][ T299] R13: 000000000000006e R14: 00007f76231580f0 R15: 00007f762315a0f8 [pid 297] futex(0x7f762318f3c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 296] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [ 24.771418][ T299] [ 24.774275][ T299] Modules linked in: [ 24.778131][ T299] ---[ end trace 0000000000000000 ]--- [ 24.783465][ T299] RIP: 0010:step_into+0x1c4/0x1090 [ 24.788534][ T299] Code: c0 0f 85 bb 0b 00 00 44 8b 3b 43 80 3c 34 00 74 0a 48 8b 7c 24 10 e8 fb b4 f2 ff 48 8b 9c 24 d8 00 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 04 30 84 c0 0f 85 a8 0b 00 00 8b 1b 89 de 81 e6 00 00 07 [ 24.808076][ T299] RSP: 0018:ffffc90000ea76a0 EFLAGS: 00010202 [ 24.813973][ T299] RAX: 0000000000000001 RBX: 0000000000000008 RCX: ffff88810085e540 [ 24.821833][ T299] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 24.829657][ T299] RBP: ffffc90000ea77f0 R08: ffffffff81ca24b9 R09: ffffed10224d389d [ 24.837407][ T299] R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff920001d4eef [ 24.845259][ T299] R13: ffffc90000ea7b80 R14: dffffc0000000000 R15: 0000000000000011 [ 24.853039][ T299] FS: 00007f762309d6c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 24.861817][ T299] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.868240][ T299] CR2: 00007ffd677d7020 CR3: 00000001001f2000 CR4: 00000000003506b0 [ 24.876034][ T299] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.883864][ T299] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.891805][ T299] Kernel panic - not syncing: Fatal exception [ 24.898016][ T299] Kernel Offset: disabled [ 24.902145][ T299] Rebooting in 86400 seconds..