./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor296104788 <...> [ 6.473676][ T28] audit: type=1400 audit(1730956292.889:39): avc: denied { setgid } for pid=137 comm="dhcpcd" capability=6 scontext=system_u:system_r:dhcpc_t tcontext=system_u:system_r:dhcpc_t tclass=capability permissive=1 [ 9.096291][ T114] udevd (114) used greatest stack depth: 22224 bytes left [ 12.839845][ T28] kauditd_printk_skb: 21 callbacks suppressed [ 12.839860][ T28] audit: type=1400 audit(1730956299.289:61): avc: denied { transition } for pid=222 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 [ 12.847130][ T28] audit: type=1400 audit(1730956299.289:62): avc: denied { noatsecure } for pid=222 comm="sshd" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 12.852132][ T28] audit: type=1400 audit(1730956299.299:63): avc: denied { write } for pid=222 comm="sh" path="pipe:[14631]" dev="pipefs" ino=14631 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:sshd_t tclass=fifo_file permissive=1 [ 12.857840][ T28] audit: type=1400 audit(1730956299.299:64): avc: denied { rlimitinh } for pid=222 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 12.861320][ T28] audit: type=1400 audit(1730956299.299:65): avc: denied { siginh } for pid=222 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 14.833576][ T223] sshd (223) used greatest stack depth: 21064 bytes left [ 17.056156][ T238] sshd (238) used greatest stack depth: 20904 bytes left Warning: Permanently added '10.128.1.173' (ED25519) to the list of known hosts. execve("./syz-executor296104788", ["./syz-executor296104788"], 0x7ffd09509710 /* 10 vars */) = 0 brk(NULL) = 0x55557499b000 brk(0x55557499bd00) = 0x55557499bd00 arch_prctl(ARCH_SET_FS, 0x55557499b380) = 0 set_tid_address(0x55557499b650) = 294 set_robust_list(0x55557499b660, 24) = 0 rseq(0x55557499bca0, 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-executor296104788", 4096) = 27 getrandom("\xf5\xdd\x0a\x83\x3d\x05\xcb\x3c", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55557499bd00 brk(0x5555749bcd00) = 0x5555749bcd00 brk(0x5555749bd000) = 0x5555749bd000 mprotect(0x7f2924cc0000, 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 executing program 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) = 0x7f291c80f000 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"..., 1048576) = 1048576 munmap(0x7f291c80f000, 138412032) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 close(4) = 0 mkdir("./file0", 0777) = 0 [ 22.587041][ T28] audit: type=1400 audit(1730956309.039:66): avc: denied { execmem } for pid=294 comm="syz-executor296" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 22.598805][ T294] loop0: detected capacity change from 0 to 2048 [ 22.606593][ T28] audit: type=1400 audit(1730956309.039:67): avc: denied { read write } for pid=294 comm="syz-executor296" name="loop0" dev="devtmpfs" ino=114 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 22.636897][ T28] audit: type=1400 audit(1730956309.039:68): avc: denied { open } for pid=294 comm="syz-executor296" path="/dev/loop0" dev="devtmpfs" ino=114 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 22.660884][ T28] audit: type=1400 audit(1730956309.039:69): avc: denied { ioctl } for pid=294 comm="syz-executor296" path="/dev/loop0" dev="devtmpfs" ino=114 ioctlcmd=0x4c00 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 mount("/dev/loop0", "./file0", "ext4", MS_DIRSYNC|MS_NOATIME|MS_LAZYTIME, "nogrpid,errors=remount-ro,") = 0 openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 chdir("./file0") = 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_SYNC|O_NOATIME|FASYNC, 000) = 4 setrlimit(RLIMIT_FSIZE, {rlim_cur=RLIM64_INFINITY, rlim_max=RLIM64_INFINITY}) = 0 [ 22.663094][ T294] EXT4-fs (loop0): mounted filesystem without journal. Quota mode: none. [ 22.686930][ T28] audit: type=1400 audit(1730956309.069:70): avc: denied { mounton } for pid=294 comm="syz-executor296" path="/root/file0" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 22.717411][ T28] audit: type=1400 audit(1730956309.169:71): avc: denied { mount } for pid=294 comm="syz-executor296" name="/" dev="loop0" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1 [ 22.734456][ T294] ------------[ cut here ]------------ [ 22.739089][ T28] audit: type=1400 audit(1730956309.189:72): avc: denied { write } for pid=294 comm="syz-executor296" name="/" dev="loop0" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 22.744337][ T294] kernel BUG at fs/ext4/inline.c:236! [ 22.744378][ T294] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 22.766395][ T28] audit: type=1400 audit(1730956309.189:73): avc: denied { add_name } for pid=294 comm="syz-executor296" name="bus" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 22.771121][ T294] CPU: 0 PID: 294 Comm: syz-executor296 Not tainted 6.1.112-syzkaller-00110-g976b055754d7 #0 [ 22.777224][ T28] audit: type=1400 audit(1730956309.189:74): avc: denied { create } for pid=294 comm="syz-executor296" name="bus" scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:unlabeled_t tclass=file permissive=1 [ 22.798114][ T294] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 22.798128][ T294] RIP: 0010:ext4_write_inline_data+0x3a4/0x3b0 [ 22.808370][ T28] audit: type=1400 audit(1730956309.189:75): avc: denied { read write open } for pid=294 comm="syz-executor296" path="/root/file0/bus" dev="loop0" ino=18 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:unlabeled_t tclass=file permissive=1 [ 22.828148][ T294] Code: 07 fe c1 38 c1 0f 8c 42 ff ff ff 4c 89 e7 49 89 d6 e8 b0 66 ca ff 4c 89 f2 e9 2f ff ff ff e8 23 fd 82 ff 0f 0b e8 1c fd 82 ff <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 57 41 56 41 55 [ 22.828168][ T294] RSP: 0018:ffffc90000ec7768 EFLAGS: 00010293 [ 22.828186][ T294] RAX: ffffffff81f2a6f4 RBX: 000000000000003c RCX: ffff888111410000 [ 22.900710][ T294] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000010000000006 [ 22.908519][ T294] RBP: ffffc90000ec77d0 R08: ffffffff81f2a47d R09: ffffed1021ef644b [ 22.916326][ T294] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000010000000005 [ 22.924136][ T294] R13: ffffc90000ec7860 R14: 0000010000000006 R15: 0000000000000001 [ 22.931948][ T294] FS: 000055557499b380(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 22.940714][ T294] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.947137][ T294] CR2: 000055ead33c4e18 CR3: 0000000126eaa000 CR4: 00000000003506b0 [ 22.954949][ T294] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.962763][ T294] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 22.970579][ T294] Call Trace: [ 22.973712][ T294] [ 22.976489][ T294] ? __die_body+0x62/0xb0 [ 22.980645][ T294] ? die+0x88/0xb0 [ 22.984212][ T294] ? do_trap+0x103/0x330 [ 22.988298][ T294] ? ext4_write_inline_data+0x3a4/0x3b0 [ 22.993658][ T294] ? handle_invalid_op+0x95/0xc0 [ 22.998438][ T294] ? ext4_write_inline_data+0x3a4/0x3b0 [ 23.003813][ T294] ? exc_invalid_op+0x32/0x50 [ 23.008325][ T294] ? asm_exc_invalid_op+0x1b/0x20 [ 23.013192][ T294] ? ext4_write_inline_data+0x12d/0x3b0 [ 23.018568][ T294] ? ext4_write_inline_data+0x3a4/0x3b0 [ 23.023950][ T294] ? ext4_write_inline_data+0x3a4/0x3b0 [ 23.029331][ T294] ? ext4_write_inline_data+0x3a4/0x3b0 [ 23.034720][ T294] ext4_write_inline_data_end+0x328/0xa90 [ 23.040269][ T294] ? put_page+0xc0/0xc0 [ 23.044260][ T294] ? ext4_da_write_begin+0x489/0x920 [ 23.049378][ T294] ? pipe_zero+0x220/0x220 [ 23.053637][ T294] ext4_da_write_end+0x1ea/0x9a0 [ 23.058410][ T294] ? ext4_da_write_begin+0x920/0x920 [ 23.063528][ T294] generic_perform_write+0x3e6/0x5c0 [ 23.068650][ T294] ? generic_file_direct_write+0x6b0/0x6b0 [ 23.074292][ T294] ? generic_write_checks_count+0x490/0x490 [ 23.080021][ T294] ext4_buffered_write_iter+0x360/0x640 [ 23.085423][ T294] ext4_file_write_iter+0x194/0x1570 [ 23.090524][ T294] ? _raw_spin_unlock+0x4c/0x70 [ 23.095226][ T294] ? finish_task_switch+0x167/0x7b0 [ 23.100243][ T294] ? avc_policy_seqno+0x1b/0x70 [ 23.104928][ T294] ? ext4_file_read_iter+0x470/0x470 [ 23.110049][ T294] ? fsnotify_perm+0x6a/0x5b0 [ 23.114576][ T294] vfs_write+0xaf6/0xed0 [ 23.118641][ T294] ? _raw_spin_lock_irqsave+0x210/0x210 [ 23.124032][ T294] ? file_end_write+0x1c0/0x1c0 [ 23.128885][ T294] ? __kasan_check_read+0x11/0x20 [ 23.133733][ T294] ? __fdget+0x179/0x240 [ 23.137814][ T294] __x64_sys_pwrite64+0x1a6/0x230 [ 23.142676][ T294] ? ksys_pwrite64+0x1d0/0x1d0 [ 23.147277][ T294] x64_sys_call+0xa6/0x9a0 [ 23.151528][ T294] do_syscall_64+0x3b/0xb0 [ 23.155781][ T294] ? clear_bhb_loop+0x55/0xb0 [ 23.160295][ T294] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 23.166021][ T294] RIP: 0033:0x7f2924c4c6b9 [ 23.170279][ T294] 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 [ 23.189722][ T294] RSP: 002b:00007ffed45523e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000012 [ 23.197963][ T294] RAX: ffffffffffffffda RBX: 00007ffed45525b8 RCX: 00007f2924c4c6b9 [ 23.205774][ T294] RDX: 0000000000000001 RSI: 0000000020000300 RDI: 0000000000000004 [ 23.213585][ T294] RBP: 00007f2924cc0610 R08: 00007ffed45525b8 R09: 00007ffed45525b8 [ 23.221406][ T294] R10: 0000010000000005 R11: 0000000000000246 R12: 0000000000000001 [ 23.229208][ T294] R13: 00007ffed45525a8 R14: 0000000000000001 R15: 0000000000000001 [ 23.237023][ T294] [ 23.239884][ T294] Modules linked in: [ 23.243717][ T294] ---[ end trace 0000000000000000 ]--- [ 23.248918][ T294] RIP: 0010:ext4_write_inline_data+0x3a4/0x3b0 [ 23.254932][ T294] Code: 07 fe c1 38 c1 0f 8c 42 ff ff ff 4c 89 e7 49 89 d6 e8 b0 66 ca ff 4c 89 f2 e9 2f ff ff ff e8 23 fd 82 ff 0f 0b e8 1c fd 82 ff <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 57 41 56 41 55 [ 23.274367][ T294] RSP: 0018:ffffc90000ec7768 EFLAGS: 00010293 [ 23.280242][ T294] RAX: ffffffff81f2a6f4 RBX: 000000000000003c RCX: ffff888111410000 [ 23.288078][ T294] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000010000000006 [ 23.295881][ T294] RBP: ffffc90000ec77d0 R08: ffffffff81f2a47d R09: ffffed1021ef644b [ 23.303881][ T294] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000010000000005 [ 23.311681][ T294] R13: ffffc90000ec7860 R14: 0000010000000006 R15: 0000000000000001 [ 23.319474][ T294] FS: 000055557499b380(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 23.328279][ T294] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.334683][ T294] CR2: 000055ead33c4e18 CR3: 0000000126eaa000 CR4: 00000000003506b0 [ 23.342524][ T294] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.350296][ T294] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.358141][ T294] Kernel panic - not syncing: Fatal exception [ 23.364319][ T294] Kernel Offset: disabled [ 23.368449][ T294] Rebooting in 86400 seconds..