./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4233437238 <...> Warning: Permanently added '10.128.1.215' (ED25519) to the list of known hosts. execve("./syz-executor4233437238", ["./syz-executor4233437238"], 0x7ffd5cc35560 /* 10 vars */) = 0 brk(NULL) = 0x555556469000 brk(0x555556469d00) = 0x555556469d00 arch_prctl(ARCH_SET_FS, 0x555556469380) = 0 set_tid_address(0x555556469650) = 293 set_robust_list(0x555556469660, 24) = 0 rseq(0x555556469ca0, 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-executor4233437238", 4096) = 28 getrandom("\x41\x2a\x86\x4e\xc4\xd0\xb2\x48", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556469d00 brk(0x55555648ad00) = 0x55555648ad00 brk(0x55555648b000) = 0x55555648b000 mprotect(0x7f7f1cb98000, 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) = 0x7f7f146e7000 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(0x7f7f146e7000, 138412032) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 close(4) = 0 mkdir("./file1", 0777) = 0 [ 21.731632][ T28] audit: type=1400 audit(1726058907.076:66): avc: denied { execmem } for pid=293 comm="syz-executor423" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 21.742658][ T28] audit: type=1400 audit(1726058907.086:67): avc: denied { read write } for pid=293 comm="syz-executor423" 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 [ 21.743275][ T293] loop0: detected capacity change from 0 to 2048 [ 21.746429][ T28] audit: type=1400 audit(1726058907.096:68): avc: denied { open } for pid=293 comm="syz-executor423" 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 [ 21.753727][ T28] audit: type=1400 audit(1726058907.096:69): avc: denied { ioctl } for pid=293 comm="syz-executor423" 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", "./file1", "ext4", 0, "min_batch_time=0x0000000000000004,,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_SYNC|O_NOATIME|FASYNC, 000) = 4 setrlimit(RLIMIT_FSIZE, {rlim_cur=RLIM64_INFINITY, rlim_max=RLIM64_INFINITY}) = 0 [ 21.779300][ T28] audit: type=1400 audit(1726058907.096:70): avc: denied { mounton } for pid=293 comm="syz-executor423" path="/root/file1" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 21.781454][ T293] EXT4-fs (loop0): mounted filesystem without journal. Quota mode: none. [ 21.810572][ T28] audit: type=1400 audit(1726058907.166:71): avc: denied { mount } for pid=293 comm="syz-executor423" name="/" dev="loop0" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1 [ 21.812746][ T293] ------------[ cut here ]------------ [ 21.837754][ T293] kernel BUG at fs/ext4/inline.c:236! [ 21.840315][ T28] audit: type=1400 audit(1726058907.166:72): avc: denied { write } for pid=293 comm="syz-executor423" name="/" dev="loop0" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 21.843000][ T293] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 21.865058][ T28] audit: type=1400 audit(1726058907.166:73): avc: denied { add_name } for pid=293 comm="syz-executor423" name="bus" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 21.870665][ T293] CPU: 1 PID: 293 Comm: syz-executor423 Not tainted 6.1.93-syzkaller-00002-gd02968a02321 #0 [ 21.891499][ T28] audit: type=1400 audit(1726058907.166:74): avc: denied { create } for pid=293 comm="syz-executor423" name="bus" scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:unlabeled_t tclass=file permissive=1 [ 21.901039][ T293] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 [ 21.901053][ T293] RIP: 0010:ext4_write_inline_data+0x3a4/0x3b0 [ 21.921711][ T28] audit: type=1400 audit(1726058907.166:75): avc: denied { read write open } for pid=293 comm="syz-executor423" path="/root/file1/bus" dev="loop0" ino=18 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:unlabeled_t tclass=file permissive=1 [ 21.931251][ T293] Code: 07 fe c1 38 c1 0f 8c 42 ff ff ff 4c 89 e7 49 89 d6 e8 e0 82 ca ff 4c 89 f2 e9 2f ff ff ff e8 13 56 83 ff 0f 0b e8 0c 56 83 ff <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 57 41 56 41 55 [ 21.931269][ T293] RSP: 0018:ffffc90000e47768 EFLAGS: 00010293 [ 21.931288][ T293] RAX: ffffffff81f24f44 RBX: 000000000000003c RCX: ffff88810971bcc0 [ 21.993996][ T293] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000010000000006 [ 22.001899][ T293] RBP: ffffc90000e477d0 R08: ffffffff81f24ccd R09: ffffed10213b2c4b [ 22.009709][ T293] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000010000000005 [ 22.017515][ T293] R13: ffffc90000e47860 R14: 0000010000000006 R15: 0000000000000001 [ 22.025325][ T293] FS: 0000555556469380(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 22.034102][ T293] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.040517][ T293] CR2: 00007ffd9657e000 CR3: 0000000109bb8000 CR4: 00000000003506a0 [ 22.048412][ T293] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.056222][ T293] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 22.064036][ T293] Call Trace: [ 22.067160][ T293] [ 22.069940][ T293] ? __die_body+0x62/0xb0 [ 22.074102][ T293] ? die+0x88/0xb0 [ 22.077660][ T293] ? do_trap+0x103/0x330 [ 22.081740][ T293] ? ext4_write_inline_data+0x3a4/0x3b0 [ 22.087217][ T293] ? handle_invalid_op+0x95/0xc0 [ 22.092070][ T293] ? ext4_write_inline_data+0x3a4/0x3b0 [ 22.097539][ T293] ? exc_invalid_op+0x32/0x50 [ 22.102144][ T293] ? asm_exc_invalid_op+0x1b/0x20 [ 22.107000][ T293] ? ext4_write_inline_data+0x12d/0x3b0 [ 22.112382][ T293] ? ext4_write_inline_data+0x3a4/0x3b0 [ 22.117760][ T293] ? ext4_write_inline_data+0x3a4/0x3b0 [ 22.123152][ T293] ? ext4_write_inline_data+0x3a4/0x3b0 [ 22.128524][ T293] ext4_write_inline_data_end+0x328/0xa90 [ 22.134080][ T293] ? put_page+0xc0/0xc0 [ 22.138096][ T293] ? ext4_da_write_begin+0x489/0x920 [ 22.143191][ T293] ? pipe_zero+0x220/0x220 [ 22.147443][ T293] ext4_da_write_end+0x1ea/0x9a0 [ 22.152230][ T293] ? ext4_da_write_begin+0x920/0x920 [ 22.157344][ T293] generic_perform_write+0x3e6/0x5c0 [ 22.162551][ T293] ? generic_file_direct_write+0x6b0/0x6b0 [ 22.168196][ T293] ? generic_write_checks_count+0x490/0x490 [ 22.173926][ T293] ext4_buffered_write_iter+0x360/0x640 [ 22.179386][ T293] ext4_file_write_iter+0x194/0x1570 [ 22.184515][ T293] ? _raw_spin_unlock+0x4c/0x70 [ 22.189191][ T293] ? finish_task_switch+0x167/0x7b0 [ 22.194231][ T293] ? avc_policy_seqno+0x1b/0x70 [ 22.198912][ T293] ? ext4_file_read_iter+0x470/0x470 [ 22.204038][ T293] ? fsnotify_perm+0x6a/0x5d0 [ 22.208549][ T293] vfs_write+0x902/0xeb0 [ 22.212626][ T293] ? _raw_spin_lock_irqsave+0x210/0x210 [ 22.218018][ T293] ? file_end_write+0x1c0/0x1c0 [ 22.222699][ T293] ? __kasan_check_read+0x11/0x20 [ 22.227555][ T293] ? __fdget+0x179/0x240 [ 22.231634][ T293] __x64_sys_pwrite64+0x1a6/0x230 [ 22.236499][ T293] ? ksys_pwrite64+0x1d0/0x1d0 [ 22.241098][ T293] x64_sys_call+0xa6/0x9a0 [ 22.245350][ T293] do_syscall_64+0x3b/0xb0 [ 22.249601][ T293] ? clear_bhb_loop+0x55/0xb0 [ 22.254113][ T293] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 22.259844][ T293] RIP: 0033:0x7f7f1cb24939 [ 22.264103][ T293] 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 [ 22.283711][ T293] RSP: 002b:00007ffd9657d2b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000012 [ 22.292039][ T293] RAX: ffffffffffffffda RBX: 00007ffd9657d488 RCX: 00007f7f1cb24939 [ 22.299939][ T293] RDX: 0000000000000001 RSI: 0000000020000300 RDI: 0000000000000004 [ 22.307761][ T293] RBP: 00007f7f1cb98610 R08: 00007ffd9657d488 R09: 00007ffd9657d488 [ 22.315571][ T293] R10: 0000010000000005 R11: 0000000000000246 R12: 0000000000000001 [ 22.323820][ T293] R13: 00007ffd9657d478 R14: 0000000000000001 R15: 0000000000000001 [ 22.331627][ T293] [ 22.334493][ T293] Modules linked in: [ 22.338308][ T293] ---[ end trace 0000000000000000 ]--- [ 22.343538][ T293] RIP: 0010:ext4_write_inline_data+0x3a4/0x3b0 [ 22.349513][ T293] Code: 07 fe c1 38 c1 0f 8c 42 ff ff ff 4c 89 e7 49 89 d6 e8 e0 82 ca ff 4c 89 f2 e9 2f ff ff ff e8 13 56 83 ff 0f 0b e8 0c 56 83 ff <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 57 41 56 41 55 [ 22.369277][ T293] RSP: 0018:ffffc90000e47768 EFLAGS: 00010293 [ 22.375154][ T293] RAX: ffffffff81f24f44 RBX: 000000000000003c RCX: ffff88810971bcc0 [ 22.382991][ T293] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000010000000006 [ 22.390759][ T293] RBP: ffffc90000e477d0 R08: ffffffff81f24ccd R09: ffffed10213b2c4b [ 22.398707][ T293] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000010000000005 [ 22.406573][ T293] R13: ffffc90000e47860 R14: 0000010000000006 R15: 0000000000000001 [ 22.414394][ T293] FS: 0000555556469380(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 22.423148][ T293] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.429564][ T293] CR2: 00007ffd9657e000 CR3: 0000000109bb8000 CR4: 00000000003506a0 [ 22.437408][ T293] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.445245][ T293] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 22.453029][ T293] Kernel panic - not syncing: Fatal exception [ 22.459128][ T293] Kernel Offset: disabled [ 22.463262][ T293] Rebooting in 86400 seconds..