./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2033026851 <...> Warning: Permanently added '10.128.10.12' (ED25519) to the list of known hosts. execve("./syz-executor2033026851", ["./syz-executor2033026851"], 0x7ffda2804a40 /* 10 vars */) = 0 brk(NULL) = 0x555574c3d000 brk(0x555574c3dd00) = 0x555574c3dd00 arch_prctl(ARCH_SET_FS, 0x555574c3d380) = 0 set_tid_address(0x555574c3d650) = 297 set_robust_list(0x555574c3d660, 24) = 0 rseq(0x555574c3dca0, 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-executor2033026851", 4096) = 28 getrandom("\x3b\x9d\x79\xf5\x57\x40\xa5\x73", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555574c3dd00 brk(0x555574c5ed00) = 0x555574c5ed00 brk(0x555574c5f000) = 0x555574c5f000 mprotect(0x7f98c0a0d000, 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 memfd_create("syzkaller", 0) = 3 mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f98b855c000 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(0x7f98b855c000, 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 [ 23.925731][ T28] audit: type=1400 audit(1738042698.124:66): avc: denied { execmem } for pid=297 comm="syz-executor203" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 23.945362][ T28] audit: type=1400 audit(1738042698.144:67): avc: denied { read write } for pid=297 comm="syz-executor203" 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 [ 23.946087][ T297] loop0: detected capacity change from 0 to 2048 [ 23.969818][ T28] audit: type=1400 audit(1738042698.144:68): avc: denied { open } for pid=297 comm="syz-executor203" 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 [ 23.999994][ T28] audit: type=1400 audit(1738042698.144:69): avc: denied { ioctl } for pid=297 comm="syz-executor203" 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, "init_itable,lazytime,bsdgroups,usrquota,nogrpid,,errors=continue") = 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 setrlimit(RLIMIT_FSIZE, {rlim_cur=RLIM64_INFINITY, rlim_max=RLIM64_INFINITY}) = 0 open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_SYNC|O_NOATIME|FASYNC, 000) = 4 [ 24.025626][ T28] audit: type=1400 audit(1738042698.174:70): avc: denied { mounton } for pid=297 comm="syz-executor203" path="/root/file0" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 24.027703][ T297] EXT4-fs (loop0): mounted filesystem without journal. Quota mode: writeback. [ 24.057192][ T28] audit: type=1400 audit(1738042698.254:71): avc: denied { mount } for pid=297 comm="syz-executor203" name="/" dev="loop0" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1 [ 24.067642][ T297] ------------[ cut here ]------------ [ 24.079366][ T28] audit: type=1400 audit(1738042698.254:72): avc: denied { write } for pid=297 comm="syz-executor203" name="/" dev="loop0" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 24.084084][ T297] kernel BUG at fs/ext4/inline.c:236! [ 24.111086][ T297] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 24.116937][ T297] CPU: 1 PID: 297 Comm: syz-executor203 Not tainted 6.1.121-syzkaller-00998-g11620ab958c2 #0 [ 24.126942][ T297] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 [ 24.136809][ T297] RIP: 0010:ext4_write_inline_data+0x3a4/0x3b0 [ 24.142797][ T297] Code: 07 fe c1 38 c1 0f 8c 42 ff ff ff 4c 89 e7 49 89 d6 e8 90 45 ca ff 4c 89 f2 e9 2f ff ff ff e8 d3 ca 82 ff 0f 0b e8 cc ca 82 ff <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 57 41 56 41 55 [ 24.162242][ T297] RSP: 0018:ffffc90000ec7748 EFLAGS: 00010293 [ 24.168136][ T297] RAX: ffffffff81f2c744 RBX: 000000000000003c RCX: ffff888110a22880 [ 24.175943][ T297] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000010000000006 [ 24.183759][ T297] RBP: ffffc90000ec77b0 R08: ffffffff81f2c4cd R09: ffffed1021fc1c4b [ 24.191573][ T297] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000010000000005 [ 24.199377][ T297] R13: ffffc90000ec7840 R14: 0000010000000006 R15: 0000000000000001 [ 24.207194][ T297] FS: 0000555574c3d380(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 24.215957][ T297] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.222377][ T297] CR2: 000055ac5726edf0 CR3: 000000012443a000 CR4: 00000000003506a0 [ 24.230191][ T297] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.238002][ T297] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.245812][ T297] Call Trace: [ 24.248945][ T297] [ 24.251731][ T297] ? __die_body+0x62/0xb0 [ 24.255880][ T297] ? die+0x88/0xb0 [ 24.259436][ T297] ? do_trap+0x103/0x330 [ 24.263527][ T297] ? ext4_write_inline_data+0x3a4/0x3b0 [ 24.268914][ T297] ? handle_invalid_op+0x95/0xc0 [ 24.273670][ T297] ? ext4_write_inline_data+0x3a4/0x3b0 [ 24.279055][ T297] ? exc_invalid_op+0x32/0x50 [ 24.283564][ T297] ? asm_exc_invalid_op+0x1b/0x20 [ 24.288430][ T297] ? ext4_write_inline_data+0x12d/0x3b0 [ 24.293807][ T297] ? ext4_write_inline_data+0x3a4/0x3b0 [ 24.299190][ T297] ? ext4_write_inline_data+0x3a4/0x3b0 [ 24.304569][ T297] ? ext4_write_inline_data+0x3a4/0x3b0 [ 24.309953][ T297] ext4_write_inline_data_end+0x328/0xa90 [ 24.315510][ T297] ? put_page+0xc0/0xc0 [ 24.319499][ T297] ? ext4_da_write_begin+0x489/0x920 [ 24.324621][ T297] ? pipe_zero+0x220/0x220 [ 24.328960][ T297] ext4_da_write_end+0x1ea/0x9a0 [ 24.333736][ T297] ? ext4_da_write_begin+0x920/0x920 [ 24.338858][ T297] generic_perform_write+0x416/0x780 [ 24.343975][ T297] ? generic_file_direct_write+0x6b0/0x6b0 [ 24.349613][ T297] ? generic_write_checks_count+0x490/0x490 [ 24.355346][ T297] ext4_buffered_write_iter+0x360/0x640 [ 24.360815][ T297] ext4_file_write_iter+0x194/0x1570 [ 24.365934][ T297] ? __update_idle_core+0x310/0x310 [ 24.370965][ T297] ? _raw_spin_unlock+0x4c/0x70 [ 24.375670][ T297] ? finish_task_switch+0x167/0x7b0 [ 24.380688][ T297] ? avc_policy_seqno+0x1b/0x70 [ 24.385373][ T297] ? ext4_file_read_iter+0x470/0x470 [ 24.390495][ T297] ? fsnotify_perm+0x6a/0x5b0 [ 24.395011][ T297] vfs_write+0xaf6/0xed0 [ 24.399086][ T297] ? _raw_spin_lock_irqsave+0x210/0x210 [ 24.404466][ T297] ? file_end_write+0x1c0/0x1c0 [ 24.409155][ T297] ? __kasan_check_read+0x11/0x20 [ 24.414013][ T297] ? __fdget+0x179/0x240 [ 24.418092][ T297] __x64_sys_pwrite64+0x1a6/0x230 [ 24.422954][ T297] ? ksys_pwrite64+0x1d0/0x1d0 [ 24.427556][ T297] x64_sys_call+0xa6/0x9a0 [ 24.431809][ T297] do_syscall_64+0x3b/0xb0 [ 24.436060][ T297] ? clear_bhb_loop+0x55/0xb0 [ 24.440571][ T297] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 24.446303][ T297] RIP: 0033:0x7f98c0999739 [ 24.450553][ T297] 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 [ 24.469995][ T297] RSP: 002b:00007fff5f2b5a98 EFLAGS: 00000246 ORIG_RAX: 0000000000000012 [ 24.478243][ T297] RAX: ffffffffffffffda RBX: 00007fff5f2b5c68 RCX: 00007f98c0999739 [ 24.486054][ T297] RDX: 0000000000000001 RSI: 0000000020000300 RDI: 0000000000000004 [ 24.493865][ T297] RBP: 00007f98c0a0d610 R08: 0000000000000000 R09: 00007fff5f2b5c68 [ 24.501674][ T297] R10: 0000010000000005 R11: 0000000000000246 R12: 0000000000000001 [ 24.509487][ T297] R13: 00007fff5f2b5c58 R14: 0000000000000001 R15: 0000000000000001 [ 24.517302][ T297] [ 24.520161][ T297] Modules linked in: [ 24.523997][ T297] ---[ end trace 0000000000000000 ]--- [ 24.529031][ T28] audit: type=1400 audit(1738042698.254:73): avc: denied { add_name } for pid=297 comm="syz-executor203" name="bus" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 24.529206][ T297] RIP: 0010:ext4_write_inline_data+0x3a4/0x3b0 [ 24.549990][ T28] audit: type=1400 audit(1738042698.254:74): avc: denied { create } for pid=297 comm="syz-executor203" name="bus" scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:unlabeled_t tclass=file permissive=1 [ 24.555660][ T297] Code: 07 fe c1 38 c1 0f 8c 42 ff ff ff 4c 89 e7 49 89 d6 e8 90 45 ca ff 4c 89 f2 e9 2f ff ff ff e8 d3 ca 82 ff 0f 0b e8 cc ca 82 ff <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 57 41 56 41 55 [ 24.576114][ T28] audit: type=1400 audit(1738042698.254:75): avc: denied { read write open } for pid=297 comm="syz-executor203" path="/root/file0/bus" dev="loop0" ino=18 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:unlabeled_t tclass=file permissive=1 [ 24.595286][ T297] RSP: 0018:ffffc90000ec7748 EFLAGS: 00010293 [ 24.595310][ T297] RAX: ffffffff81f2c744 RBX: 000000000000003c RCX: ffff888110a22880 [ 24.632488][ T297] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000010000000006 [ 24.640310][ T297] RBP: ffffc90000ec77b0 R08: ffffffff81f2c4cd R09: ffffed1021fc1c4b [ 24.648093][ T297] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000010000000005 [ 24.655939][ T297] R13: ffffc90000ec7840 R14: 0000010000000006 R15: 0000000000000001 [ 24.663730][ T297] FS: 0000555574c3d380(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 24.672645][ T297] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.679148][ T297] CR2: 000055ac5726edf0 CR3: 000000012443a000 CR4: 00000000003506a0 [ 24.687105][ T297] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.694943][ T297] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.702739][ T297] Kernel panic - not syncing: Fatal exception [ 24.708969][ T297] Kernel Offset: disabled [ 24.713100][ T297] Rebooting in 86400 seconds..