./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2268394039 <...> [ 3.525288][ T99] udevd[99]: starting version 3.2.11 [ 3.584411][ T100] udevd[100]: starting eudev-3.2.11 [ 7.205135][ T106] udevd (106) used greatest stack depth: 22576 bytes left [ 13.868431][ T30] kauditd_printk_skb: 50 callbacks suppressed [ 13.868445][ T30] audit: type=1400 audit(1722592173.490:61): avc: denied { transition } for pid=225 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 [ 13.873024][ T30] audit: type=1400 audit(1722592173.490:62): avc: denied { noatsecure } for pid=225 comm="sshd" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 13.875977][ T30] audit: type=1400 audit(1722592173.490:63): avc: denied { write } for pid=225 comm="sh" path="pipe:[12777]" dev="pipefs" ino=12777 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:sshd_t tclass=fifo_file permissive=1 [ 13.879384][ T30] audit: type=1400 audit(1722592173.490:64): avc: denied { rlimitinh } for pid=225 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 13.882067][ T30] audit: type=1400 audit(1722592173.490:65): avc: denied { siginh } for pid=225 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 16.110566][ T229] sftp-server (229) used greatest stack depth: 22096 bytes left Warning: Permanently added '10.128.1.194' (ED25519) to the list of known hosts. execve("./syz-executor2268394039", ["./syz-executor2268394039"], 0x7ffce8314be0 /* 10 vars */) = 0 brk(NULL) = 0x555556f9b000 brk(0x555556f9bd40) = 0x555556f9bd40 arch_prctl(ARCH_SET_FS, 0x555556f9b3c0) = 0 set_tid_address(0x555556f9b690) = 295 set_robust_list(0x555556f9b6a0, 24) = 0 rseq(0x555556f9bce0, 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-executor2268394039", 4096) = 28 getrandom("\x8d\x1f\x8b\x08\xf8\xea\x94\xcd", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556f9bd40 brk(0x555556fbcd40) = 0x555556fbcd40 brk(0x555556fbd000) = 0x555556fbd000 mprotect(0x7f0201d5c000, 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(0x7f0201d623ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7f0201cfb360, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f0201cec9e0}, 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) = 0x7f0201c77000 mprotect(0x7f0201c78000, 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=0x7f0201c97990, parent_tid=0x7f0201c97990, exit_signal=0, stack=0x7f0201c77000, stack_size=0x20300, tls=0x7f0201c976c0} => {parent_tid=[296]}, 88) = 296 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 futex(0x7f0201d623e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 futex(0x7f0201d623ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 296 attached [pid 296] set_robust_list(0x7f0201c979a0, 24) = 0 [pid 296] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 296] mkdirat(AT_FDCWD, "./file0", 000) = 0 [pid 296] futex(0x7f0201d623ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 295] <... futex resumed>) = 0 [pid 295] futex(0x7f0201d623e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 295] futex(0x7f0201d623ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 296] <... futex resumed>) = 1 [pid 296] openat(AT_FDCWD, "/dev/fuse", O_RDWR|O_CREAT, 000) = 3 [pid 296] futex(0x7f0201d623ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 295] <... futex resumed>) = 0 [pid 295] futex(0x7f0201d623e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 295] futex(0x7f0201d623ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 296] <... futex resumed>) = 1 [pid 296] mount(NULL, "./file0", "fuse", 0, "fd=0x0000000000000003,rootmode=00000000000000000040000,user_id=00000000000000000000,group_id=0000000"...) = 0 [pid 296] futex(0x7f0201d623ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 295] <... futex resumed>) = 0 [pid 295] futex(0x7f0201d623e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 295] futex(0x7f0201d623ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 296] <... futex resumed>) = 1 [pid 296] 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\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 296] futex(0x7f0201d623ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 295] <... futex resumed>) = 0 [pid 295] futex(0x7f0201d623e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 295] futex(0x7f0201d623ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 296] <... futex resumed>) = 1 [ 23.703823][ T30] audit: type=1400 audit(1722592183.320:66): avc: denied { execmem } for pid=295 comm="syz-executor226" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 23.723398][ T30] audit: type=1400 audit(1722592183.320:67): avc: denied { read write } for pid=295 comm="syz-executor226" 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 [pid 296] read(3, [pid 295] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 295] futex(0x7f0201d623fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 295] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f0201c56000 [pid 295] mprotect(0x7f0201c57000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 295] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 295] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f0201c76990, parent_tid=0x7f0201c76990, exit_signal=0, stack=0x7f0201c56000, stack_size=0x20300, tls=0x7f0201c766c0} => {parent_tid=[298]}, 88) = 298 [pid 295] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 295] futex(0x7f0201d623f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 295] futex(0x7f0201d623fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 298 attached [pid 298] set_robust_list(0x7f0201c769a0, 24) = 0 [pid 298] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 298] write(3, "\x50\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x07\x00\x00\x00\x28\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 298] futex(0x7f0201d623fc, FUTEX_WAKE_PRIVATE, 1000000 [pid 295] <... futex resumed>) = 0 [pid 295] futex(0x7f0201d623f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 295] futex(0x7f0201d623fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 298] <... futex resumed>) = 1 [pid 298] unlink("./file0/file0" [pid 296] <... 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\x2a\x01\x00\x00\x00\x00\x00\x00\x66\x69\x6c\x65\x30\x00", 8192) = 46 [pid 296] write(3, "\x9a\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x03\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xfd\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\x00\x00\x00\x00\x00\x00\x00\x00"..., 154) = 154 [pid 296] futex(0x7f0201d623ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 23.746833][ T30] audit: type=1400 audit(1722592183.320:68): avc: denied { open } for pid=295 comm="syz-executor226" 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 [ 23.770221][ T30] audit: type=1400 audit(1722592183.320:69): avc: denied { mounton } for pid=295 comm="syz-executor226" path="/root/file0" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 23.773444][ T298] general protection fault, probably for non-canonical address 0xdffffc0000000007: 0000 [#1] PREEMPT SMP KASAN [ 23.793216][ T30] audit: type=1400 audit(1722592183.320:70): avc: denied { mount } for pid=295 comm="syz-executor226" name="/" dev="fuse" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [ 23.804307][ T298] KASAN: null-ptr-deref in range [0x0000000000000038-0x000000000000003f] [ 23.804320][ T298] CPU: 0 PID: 298 Comm: syz-executor226 Not tainted 5.15.152-syzkaller-00143-g70e1a731d986 #0 [ 23.804335][ T298] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 [ 23.804355][ T298] RIP: 0010:do_unlinkat+0x3e1/0x920 [ 23.804391][ T298] Code: de e8 33 29 b2 ff 31 c0 81 fb 00 00 20 00 0f 94 c0 41 be ec ff ff ff 41 29 c6 e9 bd 00 00 00 49 8d 7d 30 48 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 05 e8 83 5f f4 ff 49 8b 45 30 48 89 44 24 38 4c [ 23.878864][ T298] RSP: 0018:ffffc900009d7d80 EFLAGS: 00010202 [ 23.884761][ T298] RAX: 0000000000000007 RBX: 0000000000000000 RCX: ffff8881242ebb40 [ 23.892573][ T298] RDX: ffff8881242ebb40 RSI: 0000000000000000 RDI: 000000000000003a [ 23.900385][ T298] RBP: ffffc900009d7f08 R08: ffffffff81be1c92 R09: ffffed10232fb360 [ 23.908205][ T298] R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 [ 23.916008][ T298] R13: 000000000000000a R14: dffffc0000000000 R15: 1ffff110232fb35a [ 23.923821][ T298] FS: 00007f0201c766c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 23.932589][ T298] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.939009][ T298] CR2: 00007f0201c76d58 CR3: 0000000122cfa000 CR4: 00000000003506b0 [ 23.946831][ T298] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.954633][ T298] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.962444][ T298] Call Trace: [ 23.965569][ T298] [ 23.968348][ T298] ? __die_body+0x62/0xb0 [ 23.972510][ T298] ? die_addr+0x9f/0xd0 [ 23.976503][ T298] ? exc_general_protection+0x311/0x4b0 [ 23.981887][ T298] ? __kasan_check_write+0x14/0x20 [ 23.986834][ T298] ? asm_exc_general_protection+0x27/0x30 [ 23.992388][ T298] ? do_unlinkat+0x362/0x920 [ 23.996813][ T298] ? do_unlinkat+0x3e1/0x920 [ 24.001240][ T298] ? fsnotify_link_count+0x100/0x100 [ 24.006361][ T298] ? getname_flags+0x1fd/0x520 [ 24.010960][ T298] __x64_sys_unlink+0x49/0x50 [ 24.015473][ T298] do_syscall_64+0x3d/0xb0 [ 24.019732][ T298] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 24.025457][ T298] RIP: 0033:0x7f0201cd54b9 [ 24.029709][ T298] 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 [pid 296] futex(0x7f0201d623e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 295] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [ 24.049151][ T298] RSP: 002b:00007f0201c76218 EFLAGS: 00000246 ORIG_RAX: 0000000000000057 [ 24.057395][ T298] RAX: ffffffffffffffda RBX: 00007f0201d623f8 RCX: 00007f0201cd54b9 [ 24.065206][ T298] RDX: 00007f0201cd54b9 RSI: 00000000000f4240 RDI: 0000000020000100 [ 24.073017][ T298] RBP: 00007f0201d623f0 R08: 0000000000000000 R09: 0000000000000000 [ 24.080829][ T298] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0201d2f034 [ 24.088639][ T298] R13: 000000000000006e R14: 0030656c69662f30 R15: 2f30656c69662f2e [ 24.096455][ T298] [ 24.099316][ T298] Modules linked in: [ 24.103543][ T298] ---[ end trace 90eb4e6b15bbcbb6 ]--- [ 24.108928][ T298] RIP: 0010:do_unlinkat+0x3e1/0x920 [ 24.113947][ T298] Code: de e8 33 29 b2 ff 31 c0 81 fb 00 00 20 00 0f 94 c0 41 be ec ff ff ff 41 29 c6 e9 bd 00 00 00 49 8d 7d 30 48 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 05 e8 83 5f f4 ff 49 8b 45 30 48 89 44 24 38 4c [ 24.133563][ T298] RSP: 0018:ffffc900009d7d80 EFLAGS: 00010202 [ 24.139543][ T298] RAX: 0000000000000007 RBX: 0000000000000000 RCX: ffff8881242ebb40 [ 24.147405][ T298] RDX: ffff8881242ebb40 RSI: 0000000000000000 RDI: 000000000000003a [ 24.155195][ T298] RBP: ffffc900009d7f08 R08: ffffffff81be1c92 R09: ffffed10232fb360 [ 24.163052][ T298] R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 [ 24.170851][ T298] R13: 000000000000000a R14: dffffc0000000000 R15: 1ffff110232fb35a [ 24.178650][ T298] FS: 00007f0201c766c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 24.187411][ T298] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.193818][ T298] CR2: 000000000202d258 CR3: 0000000122cfa000 CR4: 00000000003506a0 [ 24.201659][ T298] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.209456][ T298] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.217292][ T298] Kernel panic - not syncing: Fatal exception [ 24.223349][ T298] Kernel Offset: disabled [ 24.227472][ T298] Rebooting in 86400 seconds..