./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3634137824 <...> Warning: Permanently added '10.128.0.114' (ED25519) to the list of known hosts. execve("./syz-executor3634137824", ["./syz-executor3634137824"], 0x7ffddf91e1b0 /* 10 vars */) = 0 brk(NULL) = 0x555583643000 brk(0x555583643d00) = 0x555583643d00 arch_prctl(ARCH_SET_FS, 0x555583643380) = 0 set_tid_address(0x555583643650) = 289 set_robust_list(0x555583643660, 24) = 0 rseq(0x555583643ca0, 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-executor3634137824", 4096) = 28 getrandom("\x27\x19\x56\x18\x84\xca\xb7\xab", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555583643d00 brk(0x555583664d00) = 0x555583664d00 brk(0x555583665000) = 0x555583665000 mprotect(0x7f2f76962000, 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, 0) = 0x200001000000 write(1, "executing program\n", 18executing program ) = 18 memfd_create("syzkaller", 0) = 3 mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2f6e4b2000 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(0x7f2f6e4b2000, 138412032) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 23.681833][ T28] audit: type=1400 audit(1752234454.843:64): avc: denied { execmem } for pid=289 comm="syz-executor363" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 23.701752][ T28] audit: type=1400 audit(1752234454.873:65): avc: denied { read write } for pid=289 comm="syz-executor363" name="loop0" dev="devtmpfs" ino=118 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("./file1", 0777) = 0 [ 23.702269][ T289] loop0: detected capacity change from 0 to 1024 [ 23.726992][ T28] audit: type=1400 audit(1752234454.873:66): avc: denied { open } for pid=289 comm="syz-executor363" path="/dev/loop0" dev="devtmpfs" ino=118 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 mount("/dev/loop0", "./file1", "ext4", MS_RELATIME, ",errors=continue") = 0 openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 chdir("./file1") = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_CLR_FD) = 0 close(4) = 0 open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_NOATIME|FASYNC, 000) = 4 setrlimit(RLIMIT_FSIZE, {rlim_cur=RLIM64_INFINITY, rlim_max=RLIM64_INFINITY}) = 0 [ 23.757925][ T28] audit: type=1400 audit(1752234454.873:67): avc: denied { ioctl } for pid=289 comm="syz-executor363" path="/dev/loop0" dev="devtmpfs" ino=118 ioctlcmd=0x4c00 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 23.761717][ T289] EXT4-fs (loop0): mounted filesystem without journal. Quota mode: none. [ 23.783798][ T28] audit: type=1400 audit(1752234454.903:68): avc: denied { mounton } for pid=289 comm="syz-executor363" path="/root/file1" dev="sda1" ino=2024 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 23.811591][ T289] ------------[ cut here ]------------ [ 23.815005][ T28] audit: type=1400 audit(1752234454.963:69): avc: denied { mount } for pid=289 comm="syz-executor363" name="/" dev="loop0" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1 [ 23.820911][ T289] kernel BUG at fs/ext4/inline.c:236! [ 23.842247][ T28] audit: type=1400 audit(1752234454.973:70): avc: denied { write } for pid=289 comm="syz-executor363" name="/" dev="loop0" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 23.847851][ T289] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 23.869503][ T28] audit: type=1400 audit(1752234454.973:71): avc: denied { add_name } for pid=289 comm="syz-executor363" name="bus" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 23.875336][ T289] CPU: 0 PID: 289 Comm: syz-executor363 Not tainted 6.1.141-syzkaller-00038-ge2deb0b42a3a #0 [ 23.896195][ T28] audit: type=1400 audit(1752234454.973:72): avc: denied { create } for pid=289 comm="syz-executor363" name="bus" scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:unlabeled_t tclass=file permissive=1 [ 23.906192][ T289] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 23.906206][ T289] RIP: 0010:ext4_write_inline_data+0x3ab/0x3b0 [ 23.926785][ T28] audit: type=1400 audit(1752234454.973:73): avc: denied { read write open } for pid=289 comm="syz-executor363" path="/root/file1/bus" dev="loop0" ino=18 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:unlabeled_t tclass=file permissive=1 [ 23.936499][ T289] Code: 07 fe c1 38 c1 0f 8c 2c ff ff ff 48 89 df 49 89 d7 e8 69 a1 cd ff 4c 89 fa e9 19 ff ff ff e8 ec 47 89 ff 0f 0b e8 e5 47 89 ff <0f> 0b 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 b8 a4 70 30 e0 55 [ 23.936518][ T289] RSP: 0018:ffffc90000e57740 EFLAGS: 00010293 [ 23.991974][ T289] RAX: ffffffff81e6af8b RBX: 0000010000000006 RCX: ffff88810d2a1440 [ 23.999947][ T289] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000010000000006 [ 24.007917][ T289] RBP: ffffc90000e57790 R08: dffffc0000000000 R09: ffffed102016984b [ 24.015897][ T289] R10: ffffed102016984b R11: 1ffff1102016984a R12: ffff8881005cd178 [ 24.023864][ T289] R13: ffffc90000e57820 R14: 0000010000000005 R15: 000000000000003c [ 24.031837][ T289] FS: 0000555583643380(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 24.040768][ T289] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.047359][ T289] CR2: 00007f1438b77000 CR3: 000000010e087000 CR4: 00000000003506b0 [ 24.055332][ T289] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.063299][ T289] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.071268][ T289] Call Trace: [ 24.074593][ T289] [ 24.077529][ T289] ext4_write_inline_data_end+0x343/0xa90 [ 24.083259][ T289] ? __cfi_ext4_write_inline_data_end+0x10/0x10 [ 24.089499][ T289] ? __cfi_copy_page_from_iter_atomic+0x10/0x10 [ 24.095741][ T289] ext4_da_write_end+0x1ce/0x8c0 [ 24.100720][ T289] generic_perform_write+0x3a2/0x6d0 [ 24.106006][ T289] ? __cfi_generic_perform_write+0x10/0x10 [ 24.111813][ T289] ext4_buffered_write_iter+0x36f/0x660 [ 24.117446][ T289] ext4_file_write_iter+0x18f/0x13d0 [ 24.122730][ T289] ? __cfi___switch_to+0x10/0x10 [ 24.127664][ T289] ? _raw_spin_unlock+0x4c/0x70 [ 24.132552][ T289] ? finish_task_switch+0x16b/0x7b0 [ 24.137756][ T289] ? __switch_to_asm+0x3a/0x60 [ 24.142532][ T289] ? avc_policy_seqno+0x1b/0x70 [ 24.147409][ T289] ? __cfi_ext4_file_write_iter+0x10/0x10 [ 24.153129][ T289] ? fsnotify_perm+0x67/0x5b0 [ 24.157888][ T289] ? security_file_permission+0x8a/0xb0 [ 24.163434][ T289] vfs_write+0x5db/0xca0 [ 24.167706][ T289] ? __cfi_vfs_write+0x10/0x10 [ 24.172481][ T289] ? _raw_spin_unlock_irq+0x4d/0x70 [ 24.177686][ T289] ? __kasan_check_read+0x11/0x20 [ 24.182719][ T289] ? __fdget+0x15b/0x220 [ 24.186964][ T289] __x64_sys_pwrite64+0x191/0x220 [ 24.191989][ T289] ? __cfi___x64_sys_pwrite64+0x10/0x10 [ 24.197536][ T289] ? fpregs_restore_userregs+0x128/0x260 [ 24.203172][ T289] x64_sys_call+0x36/0x9a0 [ 24.207614][ T289] do_syscall_64+0x4c/0xa0 [ 24.212032][ T289] ? clear_bhb_loop+0x30/0x80 [ 24.216710][ T289] ? clear_bhb_loop+0x30/0x80 [ 24.221391][ T289] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 24.227282][ T289] RIP: 0033:0x7f2f768ef6b9 [ 24.231710][ T289] 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 [ 24.251314][ T289] RSP: 002b:00007ffdaffde0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000012 [ 24.259727][ T289] RAX: ffffffffffffffda RBX: 0000200000000000 RCX: 00007f2f768ef6b9 [ 24.267702][ T289] RDX: 0000000000000001 RSI: 0000200000000300 RDI: 0000000000000004 [ 24.275672][ T289] RBP: 00007f2f76962610 R08: 00007ffdaffde298 R09: 00007ffdaffde298 [ 24.283662][ T289] R10: 0000010000000005 R11: 0000000000000246 R12: 0000000000000001 [ 24.291646][ T289] R13: 00007ffdaffde288 R14: 0000000000000001 R15: 0000000000000001 [ 24.299629][ T289] [ 24.302648][ T289] Modules linked in: [ 24.306680][ T289] ---[ end trace 0000000000000000 ]--- [ 24.312292][ T289] RIP: 0010:ext4_write_inline_data+0x3ab/0x3b0 [ 24.318593][ T289] Code: 07 fe c1 38 c1 0f 8c 2c ff ff ff 48 89 df 49 89 d7 e8 69 a1 cd ff 4c 89 fa e9 19 ff ff ff e8 ec 47 89 ff 0f 0b e8 e5 47 89 ff <0f> 0b 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 b8 a4 70 30 e0 55 [ 24.338312][ T289] RSP: 0018:ffffc90000e57740 EFLAGS: 00010293 [ 24.344399][ T289] RAX: ffffffff81e6af8b RBX: 0000010000000006 RCX: ffff88810d2a1440 [ 24.352471][ T289] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000010000000006 [ 24.360510][ T289] RBP: ffffc90000e57790 R08: dffffc0000000000 R09: ffffed102016984b [ 24.368572][ T289] R10: ffffed102016984b R11: 1ffff1102016984a R12: ffff8881005cd178 [ 24.376554][ T289] R13: ffffc90000e57820 R14: 0000010000000005 R15: 000000000000003c [ 24.384627][ T289] FS: 0000555583643380(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 24.393644][ T289] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.400328][ T289] CR2: 00007f1438b77000 CR3: 000000010e087000 CR4: 00000000003506b0 [ 24.408353][ T289] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.416320][ T289] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.424475][ T289] Kernel panic - not syncing: Fatal exception [ 24.430851][ T289] Kernel Offset: disabled [ 24.435183][ T289] Rebooting in 86400 seconds..