./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3963628168 <...> [ 14.410908][ T24] audit: type=1400 audit(1748855927.820:62): avc: denied { rlimitinh } for pid=217 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 14.429709][ T24] audit: type=1400 audit(1748855927.820:63): avc: denied { siginh } for pid=217 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 Warning: Permanently added '10.128.10.5' (ED25519) to the list of known hosts. execve("./syz-executor3963628168", ["./syz-executor3963628168"], 0x7ffefc3e6a80 /* 10 vars */) = 0 brk(NULL) = 0x55558de4b000 brk(0x55558de4bd00) = 0x55558de4bd00 arch_prctl(ARCH_SET_FS, 0x55558de4b380) = 0 set_tid_address(0x55558de4b650) = 282 set_robust_list(0x55558de4b660, 24) = 0 rseq(0x55558de4bca0, 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-executor3963628168", 4096) = 28 getrandom("\xbd\x78\x31\x29\x53\x2e\x7a\x95", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55558de4bd00 brk(0x55558de6cd00) = 0x55558de6cd00 brk(0x55558de6d000) = 0x55558de6d000 mprotect(0x7fac42ce0000, 16384, PROT_READ) = 0 mmap(0x1ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffffffff000 mmap(0x200000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200000000000 mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0executing program ) = 0x200001000000 write(1, "executing program\n", 18) = 18 memfd_create("syzkaller", 0) = 3 mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fac3a830000 write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288) = 524288 munmap(0x7fac3a830000, 138412032) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 23.727873][ T24] audit: type=1400 audit(1748855937.160:64): avc: denied { execmem } for pid=282 comm="syz-executor396" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 23.752546][ T24] audit: type=1400 audit(1748855937.190:65): avc: denied { read write } for pid=282 comm="syz-executor396" name="loop0" dev="devtmpfs" ino=115 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 close(4) = 0 mkdir("./file2", 0777) = 0 [ 23.776838][ T24] audit: type=1400 audit(1748855937.190:66): avc: denied { open } for pid=282 comm="syz-executor396" path="/dev/loop0" dev="devtmpfs" ino=115 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 23.801056][ T24] audit: type=1400 audit(1748855937.190:67): avc: denied { ioctl } for pid=282 comm="syz-executor396" path="/dev/loop0" dev="devtmpfs" ino=115 ioctlcmd=0x4c00 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 23.828958][ T24] audit: type=1400 audit(1748855937.270:68): avc: denied { mounton } for pid=282 comm="syz-executor396" path="/root/file2" dev="sda1" ino=2024 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 23.841310][ T282] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue mount("/dev/loop0", "./file2", "ext4", MS_REC, ",errors=continue") = 0 openat(AT_FDCWD, "./file2", O_RDONLY|O_DIRECTORY) = 3 chdir("./file2") = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_CLR_FD) = 0 close(4) = 0 openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 creat("./bus", 0200) = 5 mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 open("./bus", O_RDWR|O_NOCTTY|O_APPEND|O_SYNC|O_DIRECT|O_CLOEXEC) = 6 mmap(0x200000000000, 8388608, PROT_WRITE|PROT_GROWSUP, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 6, 0) = 0x200000000000 sendmmsg(-1, 0x200000000e40, 1, MSG_OOB|MSG_PEEK|MSG_DONTROUTE|MSG_CTRUNC|MSG_PROBE|MSG_TRUNC|MSG_DONTWAIT|MSG_WAITALL|MSG_SYN|MSG_CONFIRM|MSG_MORE) = -1 EBADF (Bad file descriptor) [ 23.860809][ T24] audit: type=1400 audit(1748855937.290:69): avc: denied { mount } for pid=282 comm="syz-executor396" name="/" dev="loop0" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1 [ 23.875840][ T282] ------------[ cut here ]------------ [ 23.883376][ T24] audit: type=1400 audit(1748855937.290:70): avc: denied { write } for pid=282 comm="syz-executor396" name="/" dev="loop0" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 23.888197][ T282] kernel BUG at fs/ext4/inline.c:300! [ 23.910065][ T24] audit: type=1400 audit(1748855937.290:71): avc: denied { add_name } for pid=282 comm="syz-executor396" name="cgroup.controllers" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 23.915689][ T282] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 23.937358][ T24] audit: type=1400 audit(1748855937.290:72): avc: denied { create } for pid=282 comm="syz-executor396" name="cgroup.controllers" scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:unlabeled_t tclass=file permissive=1 [ 23.943329][ T282] CPU: 1 PID: 282 Comm: syz-executor396 Not tainted 5.10.237-syzkaller-00010-gcf6ed0f1511d #0 [ 23.943336][ T282] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 23.943369][ T282] RIP: 0010:ext4_create_inline_data+0x40a/0x410 [ 23.943387][ T282] Code: ff ff e8 d9 3f d0 ff e9 11 ff ff ff 89 f9 80 e1 07 fe c1 38 c1 0f 8c 2f ff ff ff e8 c0 3f d0 ff e9 25 ff ff ff e8 96 4f 96 ff <0f> 0b 0f 1f 40 00 55 48 89 e5 41 57 41 56 53 48 89 fb e8 7f 4f 96 [ 23.964919][ T24] audit: type=1400 audit(1748855937.290:73): avc: denied { read append open } for pid=282 comm="syz-executor396" path="/root/file2/cgroup.controllers" dev="loop0" ino=18 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:unlabeled_t tclass=file permissive=1 [ 23.975095][ T282] RSP: 0018:ffffc90000b972e0 EFLAGS: 00010293 [ 23.975108][ T282] RAX: ffffffff81cd42da RBX: ffff88811c3eebe8 RCX: ffff888104bd8000 [ 23.975123][ T282] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 24.057948][ T282] RBP: ffffc90000b97410 R08: 0000000000000000 R09: ffffed102387dd55 [ 24.065901][ T282] R10: ffffed102387dd55 R11: 1ffff1102387dd54 R12: 0000000000000000 [ 24.073852][ T282] R13: 1ffff92000172e60 R14: 0000000000000000 R15: ffff88811c3eebe8 [ 24.081807][ T282] FS: 000055558de4b380(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 24.090714][ T282] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.097278][ T282] CR2: 0000200000000e40 CR3: 000000012183c000 CR4: 00000000003506a0 [ 24.105233][ T282] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.113185][ T282] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.121135][ T282] Call Trace: [ 24.124410][ T282] ? __kasan_check_read+0x11/0x20 [ 24.129420][ T282] ? ext4_update_inline_data+0x4b0/0x4b0 [ 24.135035][ T282] ? __kasan_check_write+0x14/0x20 [ 24.140128][ T282] ? down_write+0xac/0x110 [ 24.144527][ T282] ? ext4_get_max_inline_size+0x16f/0x1e0 [ 24.150225][ T282] ? ext4_ind_truncate_ensure_credits+0x650/0x650 [ 24.156621][ T282] ext4_prepare_inline_data+0x16a/0x1f0 [ 24.162153][ T282] ext4_try_to_write_inline_data+0x30c/0x1140 [ 24.168203][ T282] ? ext4_get_inode_loc+0x130/0x130 [ 24.173382][ T282] ? PageUptodate+0xb0/0xb0 [ 24.177866][ T282] ext4_write_begin+0x219/0x1550 [ 24.182782][ T282] ? mb_cache_entry_put+0x90/0x90 [ 24.187788][ T282] ? __kasan_check_write+0x14/0x20 [ 24.192883][ T282] ? up_read+0x12/0x50 [ 24.196932][ T282] ? ext4_xattr_get+0x358/0x820 [ 24.201762][ T282] ? ext4_readahead+0x110/0x110 [ 24.206592][ T282] ? ext4_xattr_security_get+0x32/0x40 [ 24.212030][ T282] ? ext4_initxattrs+0x110/0x110 [ 24.216949][ T282] ? __vfs_getxattr+0x5a5/0x690 [ 24.221783][ T282] ? resched_curr+0x9b/0x1c0 [ 24.226360][ T282] ? vfs_getxattr_alloc+0x580/0x580 [ 24.231538][ T282] ? native_sched_clock+0x70/0xc0 [ 24.236544][ T282] ? ktime_get_coarse_real_ts64+0xe1/0xf0 [ 24.242248][ T282] generic_perform_write+0x2be/0x510 [ 24.247539][ T282] ? grab_cache_page_write_begin+0xb0/0xb0 [ 24.253325][ T282] ? down_write+0xac/0x110 [ 24.257722][ T282] ? down_read_killable+0xe0/0xe0 [ 24.262724][ T282] ? generic_write_checks+0x3d4/0x480 [ 24.268075][ T282] ext4_buffered_write_iter+0x4b8/0x640 [ 24.273614][ T282] ext4_file_write_iter+0x536/0x1980 [ 24.278883][ T282] ? native_set_ldt+0x370/0x370 [ 24.283712][ T282] ? avc_policy_seqno+0x1b/0x70 [ 24.288543][ T282] ? selinux_file_permission+0x2a5/0x510 [ 24.294155][ T282] ? ext4_file_read_iter+0x530/0x530 [ 24.299419][ T282] ? security_file_permission+0x83/0xa0 [ 24.304947][ T282] ? iov_iter_init+0x3f/0x120 [ 24.309604][ T282] vfs_write+0x725/0xd60 [ 24.313831][ T282] ? __kasan_check_write+0x14/0x20 [ 24.318926][ T282] ? kernel_write+0x3c0/0x3c0 [ 24.323583][ T282] ? cgroup_leave_frozen+0x166/0x2b0 [ 24.328852][ T282] ? __kasan_check_read+0x11/0x20 [ 24.333859][ T282] ? __fdget_pos+0x2d9/0x380 [ 24.338429][ T282] ksys_write+0x140/0x240 [ 24.342738][ T282] ? __ia32_sys_read+0x90/0x90 [ 24.347481][ T282] ? fpu__clear_all+0x20/0x20 [ 24.352139][ T282] ? debug_smp_processor_id+0x17/0x20 [ 24.357514][ T282] __x64_sys_write+0x7b/0x90 [ 24.362082][ T282] do_syscall_64+0x31/0x40 [ 24.366518][ T282] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 24.372447][ T282] RIP: 0033:0x7fac42c6d879 [ 24.376880][ T282] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 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 b8 ff ff ff f7 d8 64 89 01 48 [ 24.396494][ T282] RSP: 002b:00007fffd17445f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 24.405005][ T282] RAX: ffffffffffffffda RBX: 00007fffd17447d8 RCX: 00007fac42c6d879 [ 24.413085][ T282] RDX: 0000000000000009 RSI: 00002000000000c0 RDI: 0000000000000004 [ 24.421179][ T282] RBP: 00007fac42ce0610 R08: 0000000000000000 R09: 0000000000000000 [ 24.429167][ T282] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 24.437150][ T282] R13: 00007fffd17447c8 R14: 0000000000000001 R15: 0000000000000001 [ 24.445130][ T282] Modules linked in: [ 24.450717][ T282] ---[ end trace f8b87a196e3f560d ]--- [ 24.456494][ T282] RIP: 0010:ext4_create_inline_data+0x40a/0x410 [ 24.462855][ T282] Code: ff ff e8 d9 3f d0 ff e9 11 ff ff ff 89 f9 80 e1 07 fe c1 38 c1 0f 8c 2f ff ff ff e8 c0 3f d0 ff e9 25 ff ff ff e8 96 4f 96 ff <0f> 0b 0f 1f 40 00 55 48 89 e5 41 57 41 56 53 48 89 fb e8 7f 4f 96 [ 24.482689][ T282] RSP: 0018:ffffc90000b972e0 EFLAGS: 00010293 [ 24.488869][ T282] RAX: ffffffff81cd42da RBX: ffff88811c3eebe8 RCX: ffff888104bd8000 [ 24.496942][ T282] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 24.505026][ T282] RBP: ffffc90000b97410 R08: 0000000000000000 R09: ffffed102387dd55 [ 24.513133][ T282] R10: ffffed102387dd55 R11: 1ffff1102387dd54 R12: 0000000000000000 [ 24.521157][ T282] R13: 1ffff92000172e60 R14: 0000000000000000 R15: ffff88811c3eebe8 [ 24.529221][ T282] FS: 000055558de4b380(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 24.538275][ T282] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.544953][ T282] CR2: 0000200000000e40 CR3: 000000012183c000 CR4: 00000000003506a0 [ 24.553022][ T282] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.561058][ T282] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.569135][ T282] Kernel panic - not syncing: Fatal exception [ 24.575458][ T282] Kernel Offset: disabled [ 24.579778][ T282] Rebooting in 86400 seconds..