./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3452082369 <...> Warning: Permanently added '10.128.0.21' (ED25519) to the list of known hosts. execve("./syz-executor3452082369", ["./syz-executor3452082369"], 0x7fff3f432690 /* 10 vars */) = 0 brk(NULL) = 0x55558989f000 brk(0x55558989fd00) = 0x55558989fd00 arch_prctl(ARCH_SET_FS, 0x55558989f380) = 0 set_tid_address(0x55558989f650) = 294 set_robust_list(0x55558989f660, 24) = 0 rseq(0x55558989fca0, 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-executor3452082369", 4096) = 28 getrandom("\xad\x48\x33\xf6\x15\xd4\x22\x41", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55558989fd00 brk(0x5555898c0d00) = 0x5555898c0d00 brk(0x5555898c1000) = 0x5555898c1000 mprotect(0x7f8b5c38d000, 16384, PROT_READ) = 0 mmap(0x3ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x3ffffffff000 mmap(0x400000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x400000000000 mmap(0x400001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x400001000000 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) = 0x7f8b53edc000 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(0x7f8b53edc000, 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 [ 22.984439][ T28] audit: type=1400 audit(1740765705.054:66): avc: denied { execmem } for pid=294 comm="syz-executor345" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 22.994008][ T294] loop0: detected capacity change from 0 to 2048 [ 23.004474][ T28] audit: type=1400 audit(1740765705.054:67): avc: denied { read write } for pid=294 comm="syz-executor345" 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 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 [ 23.033911][ T28] audit: type=1400 audit(1740765705.054:68): avc: denied { open } for pid=294 comm="syz-executor345" 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 [ 23.043920][ T294] EXT4-fs (loop0): mounted filesystem without journal. Quota mode: none. [ 23.058240][ T28] audit: type=1400 audit(1740765705.054:69): avc: denied { ioctl } for pid=294 comm="syz-executor345" 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 [ 23.077694][ T294] ------------[ cut here ]------------ [ 23.091899][ T28] audit: type=1400 audit(1740765705.074:70): avc: denied { mounton } for pid=294 comm="syz-executor345" path="/root/file1" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 23.096926][ T294] kernel BUG at fs/ext4/inline.c:236! [ 23.119523][ T28] audit: type=1400 audit(1740765705.134:71): avc: denied { mount } for pid=294 comm="syz-executor345" name="/" dev="loop0" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1 [ 23.124573][ T294] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 23.146249][ T28] audit: type=1400 audit(1740765705.144:72): avc: denied { write } for pid=294 comm="syz-executor345" name="/" dev="loop0" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 23.151967][ T294] CPU: 1 PID: 294 Comm: syz-executor345 Not tainted 6.1.128-syzkaller-00038-gfa3cc11118de #0 [ 23.151990][ T294] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 [ 23.152002][ T294] RIP: 0010:ext4_write_inline_data+0x3a4/0x3b0 [ 23.173904][ T28] audit: type=1400 audit(1740765705.144:73): avc: denied { add_name } for pid=294 comm="syz-executor345" name="bus" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 23.183560][ T294] 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 73 a8 82 ff 0f 0b e8 6c a8 82 ff <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 57 41 56 41 55 [ 23.183581][ T294] RSP: 0018:ffffc90000e77748 EFLAGS: 00010293 [ 23.193619][ T28] audit: type=1400 audit(1740765705.144:74): avc: denied { create } for pid=294 comm="syz-executor345" name="bus" scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:unlabeled_t tclass=file permissive=1 [ 23.199438][ T294] RAX: ffffffff81f2ec74 RBX: 000000000000003c RCX: ffff88811008d100 [ 23.220949][ T28] audit: type=1400 audit(1740765705.144:75): avc: denied { read write open } for pid=294 comm="syz-executor345" path="/root/file1/bus" dev="loop0" ino=18 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:unlabeled_t tclass=file permissive=1 [ 23.239365][ T294] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000010000000006 [ 23.239384][ T294] RBP: ffffc90000e777b0 R08: ffffffff81f2e9fd R09: ffffed1021188c4b [ 23.239398][ T294] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000010000000005 [ 23.239411][ T294] R13: ffffc90000e77840 R14: 0000010000000006 R15: 0000000000000001 [ 23.328880][ T294] FS: 000055558989f380(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 23.337644][ T294] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.344066][ T294] CR2: 000055c4fc6b3570 CR3: 00000001232ce000 CR4: 00000000003506a0 [ 23.351882][ T294] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.359688][ T294] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.367499][ T294] Call Trace: [ 23.370625][ T294] [ 23.373406][ T294] ? __die_body+0x62/0xb0 [ 23.377570][ T294] ? die+0x88/0xb0 [ 23.381124][ T294] ? do_trap+0x103/0x330 [ 23.385205][ T294] ? ext4_write_inline_data+0x3a4/0x3b0 [ 23.390585][ T294] ? handle_invalid_op+0x95/0xc0 [ 23.395361][ T294] ? ext4_write_inline_data+0x3a4/0x3b0 [ 23.400747][ T294] ? exc_invalid_op+0x32/0x50 [ 23.405258][ T294] ? asm_exc_invalid_op+0x1b/0x20 [ 23.410114][ T294] ? ext4_write_inline_data+0x12d/0x3b0 [ 23.415505][ T294] ? ext4_write_inline_data+0x3a4/0x3b0 [ 23.420935][ T294] ? ext4_write_inline_data+0x3a4/0x3b0 [ 23.426264][ T294] ? ext4_write_inline_data+0x3a4/0x3b0 [ 23.431642][ T294] ext4_write_inline_data_end+0x328/0xa90 [ 23.437196][ T294] ? put_page+0xc0/0xc0 [ 23.441184][ T294] ? ext4_da_write_begin+0x489/0x920 [ 23.446324][ T294] ? pipe_zero+0x220/0x220 [ 23.450572][ T294] ext4_da_write_end+0x1ea/0x9a0 [ 23.455348][ T294] ? ext4_da_write_begin+0x920/0x920 [ 23.460566][ T294] generic_perform_write+0x416/0x780 [ 23.465692][ T294] ? generic_file_direct_write+0x6b0/0x6b0 [ 23.471328][ T294] ? generic_write_checks_count+0x490/0x490 [ 23.477059][ T294] ext4_buffered_write_iter+0x360/0x640 [ 23.482445][ T294] ext4_file_write_iter+0x194/0x1570 [ 23.487560][ T294] ? __update_idle_core+0x310/0x310 [ 23.492592][ T294] ? _raw_spin_unlock+0x4c/0x70 [ 23.497280][ T294] ? finish_task_switch+0x167/0x7b0 [ 23.502319][ T294] ? avc_policy_seqno+0x1b/0x70 [ 23.506998][ T294] ? ext4_file_read_iter+0x470/0x470 [ 23.512141][ T294] ? fsnotify_perm+0x6a/0x5b0 [ 23.516657][ T294] vfs_write+0xaf6/0xed0 [ 23.520713][ T294] ? _raw_spin_lock_irqsave+0x210/0x210 [ 23.526094][ T294] ? file_end_write+0x1c0/0x1c0 [ 23.530782][ T294] ? __kasan_check_read+0x11/0x20 [ 23.535649][ T294] ? __fdget+0x179/0x240 [ 23.539720][ T294] __x64_sys_pwrite64+0x1a6/0x230 [ 23.544580][ T294] ? ksys_pwrite64+0x1d0/0x1d0 [ 23.549182][ T294] x64_sys_call+0xa6/0x9a0 [ 23.553431][ T294] do_syscall_64+0x3b/0xb0 [ 23.557684][ T294] ? clear_bhb_loop+0x55/0xb0 [ 23.562197][ T294] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 23.568359][ T294] RIP: 0033:0x7f8b5c3199b9 [ 23.572618][ 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 [ 23.592058][ T294] RSP: 002b:00007fff73670808 EFLAGS: 00000246 ORIG_RAX: 0000000000000012 [ 23.600304][ T294] RAX: ffffffffffffffda RBX: 00007fff736709d8 RCX: 00007f8b5c3199b9 [ 23.608116][ T294] RDX: 0000000000000001 RSI: 0000400000000300 RDI: 0000000000000004 [ 23.615920][ T294] RBP: 00007f8b5c38d610 R08: 00007fff736709d8 R09: 00007fff736709d8 [ 23.623733][ T294] R10: 0000010000000005 R11: 0000000000000246 R12: 0000000000000001 [ 23.631544][ T294] R13: 00007fff736709c8 R14: 0000000000000001 R15: 0000000000000001 [ 23.639360][ T294] [ 23.642220][ T294] Modules linked in: [ 23.646032][ T294] ---[ end trace 0000000000000000 ]--- [ 23.651254][ T294] RIP: 0010:ext4_write_inline_data+0x3a4/0x3b0 [ 23.657281][ T294] 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 73 a8 82 ff 0f 0b e8 6c a8 82 ff <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 57 41 56 41 55 [ 23.676796][ T294] RSP: 0018:ffffc90000e77748 EFLAGS: 00010293 [ 23.682684][ T294] RAX: ffffffff81f2ec74 RBX: 000000000000003c RCX: ffff88811008d100 [ 23.690560][ T294] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000010000000006 [ 23.698400][ T294] RBP: ffffc90000e777b0 R08: ffffffff81f2e9fd R09: ffffed1021188c4b [ 23.706213][ T294] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000010000000005 [ 23.714115][ T294] R13: ffffc90000e77840 R14: 0000010000000006 R15: 0000000000000001 [ 23.721911][ T294] FS: 000055558989f380(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 23.730659][ T294] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.737110][ T294] CR2: 000055c4fc6b3570 CR3: 00000001232ce000 CR4: 00000000003506a0 [ 23.744915][ T294] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.752733][ T294] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.760519][ T294] Kernel panic - not syncing: Fatal exception [ 23.766656][ T294] Kernel Offset: disabled [ 23.770784][ T294] Rebooting in 86400 seconds..