./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1777737738 <...> Warning: Permanently added '10.128.1.223' (ED25519) to the list of known hosts. execve("./syz-executor1777737738", ["./syz-executor1777737738"], 0x7ffc162f7ae0 /* 10 vars */) = 0 brk(NULL) = 0x555556ead000 brk(0x555556eadd40) = 0x555556eadd40 arch_prctl(ARCH_SET_FS, 0x555556ead3c0) = 0 set_tid_address(0x555556ead690) = 302 set_robust_list(0x555556ead6a0, 24) = 0 rseq(0x555556eadce0, 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-executor1777737738", 4096) = 28 getrandom("\x77\xaa\x5c\xf5\xd0\x3f\x5c\x85", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556eadd40 brk(0x555556eced40) = 0x555556eced40 brk(0x555556ecf000) = 0x555556ecf000 mprotect(0x7fd57a2de000, 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(0x7fd57a2e43ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7fd57a27d320, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fd57a26e9a0}, 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) = 0x7fd57a1f9000 mprotect(0x7fd57a1fa000, 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=0x7fd57a219990, parent_tid=0x7fd57a219990, exit_signal=0, stack=0x7fd57a1f9000, stack_size=0x20300, tls=0x7fd57a2196c0} => {parent_tid=[303]}, 88) = 303 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 futex(0x7fd57a2e43e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 futex(0x7fd57a2e43ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 303 attached [pid 303] set_robust_list(0x7fd57a2199a0, 24) = 0 [pid 303] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 303] mkdirat(AT_FDCWD, "./file0", 000) = 0 [pid 303] futex(0x7fd57a2e43ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... futex resumed>) = 0 [pid 302] futex(0x7fd57a2e43e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 302] futex(0x7fd57a2e43ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] <... futex resumed>) = 1 [pid 303] openat(AT_FDCWD, "/dev/fuse", O_RDWR|O_CREAT, 000) = 3 [pid 303] futex(0x7fd57a2e43ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... futex resumed>) = 0 [pid 302] futex(0x7fd57a2e43e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 302] futex(0x7fd57a2e43ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] <... futex resumed>) = 1 [pid 303] mount(NULL, "./file0", "fuse", 0, "fd=0x0000000000000003,rootmode=0000000000000000040000,user_id=00000000000000000000,group_id=00000000"...) = 0 [pid 303] futex(0x7fd57a2e43ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... futex resumed>) = 0 [pid 302] futex(0x7fd57a2e43e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 302] futex(0x7fd57a2e43ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] <... futex resumed>) = 1 [pid 303] 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"..., 8224) = 104 [pid 303] futex(0x7fd57a2e43ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... futex resumed>) = 0 [pid 302] futex(0x7fd57a2e43e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 302] futex(0x7fd57a2e43ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] <... futex resumed>) = 1 [ 28.535542][ T28] audit: type=1400 audit(1720804666.991:66): avc: denied { execmem } for pid=302 comm="syz-executor177" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 28.554776][ T28] audit: type=1400 audit(1720804667.001:67): avc: denied { read write } for pid=302 comm="syz-executor177" 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 303] mknod("./file0/../file0/file0", 000 [pid 302] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 302] futex(0x7fd57a2e43fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 302] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fd57a1d8000 [pid 302] mprotect(0x7fd57a1d9000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 302] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 302] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fd57a1f8990, parent_tid=0x7fd57a1f8990, exit_signal=0, stack=0x7fd57a1d8000, stack_size=0x20300, tls=0x7fd57a1f86c0} => {parent_tid=[305]}, 88) = 305 [pid 302] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 302] futex(0x7fd57a2e43f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 302] futex(0x7fd57a2e43fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 305 attached [pid 305] set_robust_list(0x7fd57a1f89a0, 24) = 0 [pid 305] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 305] 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 305] futex(0x7fd57a2e43fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... futex resumed>) = 0 [pid 302] futex(0x7fd57a2e43f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 302] futex(0x7fd57a2e43fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] <... futex resumed>) = 1 [pid 305] 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\x2f\x01\x00\x00\x00\x00\x00\x00\x66\x69\x6c\x65\x30\x00", 8192) = 46 [ 28.578130][ T28] audit: type=1400 audit(1720804667.001:68): avc: denied { open } for pid=302 comm="syz-executor177" 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 [ 28.601397][ T28] audit: type=1400 audit(1720804667.001:69): avc: denied { mounton } for pid=302 comm="syz-executor177" path="/root/file0" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 28.603572][ T303] general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN [pid 305] write(3, "\xa0\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\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 160) = 160 [pid 305] futex(0x7fd57a2e43fc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 305] futex(0x7fd57a2e43f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 302] <... futex resumed>) = 0 [ 28.624473][ T28] audit: type=1400 audit(1720804667.001:70): avc: denied { mount } for pid=302 comm="syz-executor177" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [ 28.635632][ T303] KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017] [ 28.635646][ T303] CPU: 1 PID: 303 Comm: syz-executor177 Not tainted 6.1.84-syzkaller-00005-g96d66062d076 #0 [ 28.635662][ T303] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 [ 28.635671][ T303] RIP: 0010:filename_create+0x2d8/0x530 [ 28.690924][ T303] Code: 92 00 00 00 4c 89 7c 24 28 45 84 e4 0f 95 c0 83 7c 24 14 00 0f 94 c3 20 c3 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 1f 02 00 00 45 8b 26 41 bd 00 00 70 00 be [ 28.710360][ T303] RSP: 0018:ffffc90000e27ce0 EFLAGS: 00010202 [ 28.716261][ T303] RAX: 0000000000000002 RBX: 1ffff920001c4f00 RCX: dffffc0000000000 [ 28.724073][ T303] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000 [pid 302] exit_group(0) = ? [pid 305] <... futex resumed>) = ? [pid 305] +++ exited with 0 +++ [ 28.731882][ T303] RBP: ffffc90000e27dd0 R08: ffffffff81cbb018 R09: fffff520001c4f75 [ 28.739694][ T303] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 [ 28.747669][ T303] R13: 0000000000000600 R14: 0000000000000010 R15: ffffc90000e27e80 [ 28.755478][ T303] FS: 00007fd57a2196c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 28.764416][ T303] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.770837][ T303] CR2: 0000562c7a6994e8 CR3: 00000001207af000 CR4: 00000000003506a0 [ 28.778657][ T303] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.786461][ T303] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.794271][ T303] Call Trace: [ 28.797397][ T303] [ 28.800173][ T303] ? __die_body+0x62/0xb0 [ 28.804341][ T303] ? die_addr+0x9f/0xd0 [ 28.808331][ T303] ? exc_general_protection+0x317/0x4c0 [ 28.813716][ T303] ? asm_exc_general_protection+0x27/0x30 [ 28.819268][ T303] ? fast_dput+0x78/0x2a0 [ 28.823435][ T303] ? filename_create+0x2d8/0x530 [ 28.828207][ T303] ? kern_path_create+0x1a0/0x1a0 [ 28.833068][ T303] do_mknodat+0x1a4/0x5c0 [ 28.837241][ T303] ? do_o_path+0x230/0x230 [ 28.841485][ T303] __x64_sys_mknod+0x8e/0xa0 [ 28.845918][ T303] do_syscall_64+0x3d/0xb0 [ 28.850166][ T303] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 28.855892][ T303] RIP: 0033:0x7fd57a257479 [ 28.860150][ T303] 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 [ 28.879587][ T303] RSP: 002b:00007fd57a219218 EFLAGS: 00000246 ORIG_RAX: 0000000000000085 [ 28.887842][ T303] RAX: ffffffffffffffda RBX: 00007fd57a2e43e8 RCX: 00007fd57a257479 [ 28.895641][ T303] RDX: 0000000000000700 RSI: 0000000000000000 RDI: 00000000200002c0 [ 28.903455][ T303] RBP: 00007fd57a2e43e0 R08: 0000000000000000 R09: 0000000000000000 [ 28.911264][ T303] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd57a2b1034 [ 28.919077][ T303] R13: 00007fd57a2b1050 R14: 00007fd57a2af00e R15: 0030656c69662f30 [ 28.926893][ T303] [ 28.929760][ T303] Modules linked in: [ 28.934088][ T303] ---[ end trace 0000000000000000 ]--- [ 28.939390][ T303] RIP: 0010:filename_create+0x2d8/0x530 [ 28.944730][ T303] Code: 92 00 00 00 4c 89 7c 24 28 45 84 e4 0f 95 c0 83 7c 24 14 00 0f 94 c3 20 c3 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 1f 02 00 00 45 8b 26 41 bd 00 00 70 00 be [ 28.964188][ T303] RSP: 0018:ffffc90000e27ce0 EFLAGS: 00010202 [ 28.970082][ T303] RAX: 0000000000000002 RBX: 1ffff920001c4f00 RCX: dffffc0000000000 [ 28.977898][ T303] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000 [ 28.985698][ T303] RBP: ffffc90000e27dd0 R08: ffffffff81cbb018 R09: fffff520001c4f75 [ 28.993530][ T303] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 [ 29.001328][ T303] R13: 0000000000000600 R14: 0000000000000010 R15: ffffc90000e27e80 [ 29.009140][ T303] FS: 00007fd57a2196c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 29.017902][ T303] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 29.024310][ T303] CR2: 0000562c7a6994e8 CR3: 00000001207af000 CR4: 00000000003506a0 [ 29.032156][ T303] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 29.039963][ T303] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 29.047774][ T303] Kernel panic - not syncing: Fatal exception [ 29.053858][ T303] Kernel Offset: disabled [ 29.058072][ T303] Rebooting in 86400 seconds..