./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor399130247 <...> Warning: Permanently added '10.128.0.187' (ED25519) to the list of known hosts. execve("./syz-executor399130247", ["./syz-executor399130247"], 0x7ffc0f935a70 /* 10 vars */) = 0 brk(NULL) = 0x555555fa8000 brk(0x555555fa8d00) = 0x555555fa8d00 arch_prctl(ARCH_SET_FS, 0x555555fa8380) = 0 set_tid_address(0x555555fa8650) = 355 set_robust_list(0x555555fa8660, 24) = 0 rseq(0x555555fa8ca0, 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-executor399130247", 4096) = 27 getrandom("\xc9\xa6\x50\x63\x65\xf6\x1f\xff", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555555fa8d00 brk(0x555555fc9d00) = 0x555555fc9d00 brk(0x555555fca000) = 0x555555fca000 mprotect(0x7ff0288a6000, 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 memfd_create("syzkaller", 0) = 3 mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff0203f4000 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(0x7ff0203f4000, 138412032) = 0 [ 22.600534][ T23] audit: type=1400 audit(1713724201.930:66): avc: denied { execmem } for pid=355 comm="syz-executor399" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 [ 22.627841][ T23] audit: type=1400 audit(1713724201.960:67): avc: denied { read write } for pid=355 comm="syz-executor399" name="loop0" dev="devtmpfs" ino=9193 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 22.652407][ T23] audit: type=1400 audit(1713724201.960:68): avc: denied { open } for pid=355 comm="syz-executor399" path="/dev/loop0" dev="devtmpfs" ino=9193 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 22.677005][ T23] audit: type=1400 audit(1713724202.020:69): avc: denied { ioctl } for pid=355 comm="syz-executor399" path="/dev/loop0" dev="devtmpfs" ino=9193 ioctlcmd=0x4c00 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 close(4) = 0 mkdir("./bus", 0777) = 0 [ 22.775637][ T23] audit: type=1400 audit(1713724202.110:70): avc: denied { mounton } for pid=355 comm="syz-executor399" path="/root/bus" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 22.806518][ T355] EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue mount("/dev/loop0", "./bus", "ext4", MS_SYNCHRONOUS|MS_NODIRATIME|MS_REC|MS_I_VERSION, ",errors=continue") = 0 openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 chdir("./bus") = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_CLR_FD) = 0 close(4) = 0 chdir("./file0") = 0 memfd_create("syzkaller", 0) = 4 mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff0203f4000 write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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(0x7ff0203f4000, 138412032) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) ioctl(5, LOOP_CLR_FD) = 0 ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) close(5) = 0 close(4) = 0 [ 22.815648][ T23] audit: type=1400 audit(1713724202.160:71): avc: denied { mount } for pid=355 comm="syz-executor399" name="/" dev="loop0" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1 [ 22.815675][ T355] ext4 filesystem being mounted at /root/bus supports timestamps until 2038 (0x7fffffff) openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [ 22.867167][ T23] audit: type=1400 audit(1713724202.200:72): avc: denied { write } for pid=355 comm="syz-executor399" name="file0" dev="loop0" ino=12 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 22.889317][ T23] audit: type=1400 audit(1713724202.200:73): avc: denied { add_name } for pid=355 comm="syz-executor399" name="cgroup.controllers" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 open("./bus", O_RDWR|O_CREAT|O_SYNC|O_NOATIME, 000) = 5 mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = 0 open("./bus", O_RDWR|O_NOCTTY|O_SYNC|O_NOATIME|0x3c) = 6 write(6, "\x23\x21\x20\x0a\x73\x00\x2e\x63\x6f\x6e\x74\x72\x6f\x6c\x6c\x65\x72\x73\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 34136651) = 1048576 [ 22.911354][ T23] audit: type=1400 audit(1713724202.200:74): avc: denied { create } for pid=355 comm="syz-executor399" name="cgroup.controllers" scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:unlabeled_t tclass=file permissive=1 [ 22.933299][ T23] audit: type=1400 audit(1713724202.220:75): avc: denied { read append open } for pid=355 comm="syz-executor399" path="/root/bus/file0/cgroup.controllers" dev="loop0" ino=18 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:unlabeled_t tclass=file permissive=1 [ 22.969760][ T355] ------------[ cut here ]------------ [ 22.975116][ T355] kernel BUG at fs/ext4/ext4.h:2984! [ 22.980353][ T355] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 22.986141][ T355] CPU: 0 PID: 355 Comm: syz-executor399 Not tainted 5.4.268-syzkaller-00003-g2d5d8240a7cb #0 [ 22.996208][ T355] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 23.006302][ T355] RIP: 0010:ext4_trim_fs+0x1e69/0x1e80 [ 23.011569][ T355] Code: 80 e1 07 80 c1 03 38 c1 0f 8c 40 e7 ff ff 48 8d bc 24 f0 01 00 00 e8 76 c4 c8 ff e9 2e e7 ff ff e8 bc a8 6f ff e8 87 f0 98 ff <0f> 0b e8 80 f0 98 ff 0f 0b 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f [ 23.031010][ T355] RSP: 0018:ffff8881dc7e7500 EFLAGS: 00010293 [ 23.036911][ T355] RAX: ffffffff81cb5699 RBX: 0000000000000001 RCX: ffff8881dc431f80 [ 23.044729][ T355] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000050186 [ 23.052626][ T355] RBP: ffff8881dc7e7770 R08: ffffffff81cb4014 R09: 0000000000000003 [ 23.060780][ T355] R10: ffffffffffffffff R11: dffffc0000000001 R12: 0000000000000001 [ 23.068935][ T355] R13: dffffc0000000000 R14: ffff8881dc15e000 R15: 0000000000050186 [ 23.076739][ T355] FS: 0000555555fa8380(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 23.085673][ T355] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.092096][ T355] CR2: 000000002010007f CR3: 00000001dc61c000 CR4: 00000000003406b0 [ 23.099911][ T355] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.107719][ T355] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.115548][ T355] Call Trace: [ 23.118668][ T355] ? __die+0xb4/0x100 [ 23.122500][ T355] ? die+0x26/0x50 [ 23.126036][ T355] ? do_trap+0x1e7/0x340 [ 23.130292][ T355] ? ext4_trim_fs+0x1e69/0x1e80 [ 23.135008][ T355] ? ext4_trim_fs+0x1e69/0x1e80 [ 23.139668][ T355] ? do_invalid_op+0xfb/0x110 [ 23.144178][ T355] ? ext4_trim_fs+0x1e69/0x1e80 [ 23.148864][ T355] ? invalid_op+0x1e/0x30 [ 23.153114][ T355] ? ext4_trim_fs+0x7e4/0x1e80 [ 23.157723][ T355] ? ext4_trim_fs+0x1e69/0x1e80 [ 23.162406][ T355] ? ext4_trim_fs+0x1e69/0x1e80 [ 23.167096][ T355] ? ext4_group_add_blocks+0xde0/0xde0 [ 23.172389][ T355] ? cap_capable+0x1b1/0x250 [ 23.176811][ T355] ext4_ioctl+0x2168/0x3ff0 [ 23.181151][ T355] ? asan.module_dtor+0x20/0x20 [ 23.185840][ T355] ? call_rcu+0x10/0x10 [ 23.189831][ T355] ? slow_avc_audit+0x26c/0x3c0 [ 23.194516][ T355] ? avc_get_hash_stats+0x1a0/0x1a0 [ 23.199550][ T355] ? avc_update_node+0x897/0x960 [ 23.204325][ T355] ? _raw_spin_unlock_irqrestore+0x57/0x80 [ 23.210053][ T355] ? avc_denied+0x15c/0x1d0 [ 23.214394][ T355] ? avc_has_extended_perms+0xa4c/0x1120 [ 23.219863][ T355] ? avc_has_extended_perms+0xafc/0x1120 [ 23.225343][ T355] ? avc_flush+0x1f0/0x1f0 [ 23.229583][ T355] ? finish_task_switch+0x130/0x590 [ 23.234618][ T355] ? _raw_spin_lock_irqsave+0x210/0x210 [ 23.240000][ T355] ? ptrace_stop+0x6ee/0xa30 [ 23.244430][ T355] ? asan.module_dtor+0x20/0x20 [ 23.249111][ T355] do_vfs_ioctl+0x742/0x1720 [ 23.253565][ T355] ? ioctl_preallocate+0x250/0x250 [ 23.258594][ T355] ? check_preemption_disabled+0x153/0x320 [ 23.264227][ T355] ? syscall_trace_enter+0x650/0x940 [ 23.269349][ T355] ? do_syscall_64+0x1c0/0x1c0 [ 23.274064][ T355] ? switch_fpu_return+0x1d4/0x410 [ 23.279120][ T355] ? security_file_ioctl+0x7d/0xa0 [ 23.284064][ T355] __x64_sys_ioctl+0xd4/0x110 [ 23.288574][ T355] do_syscall_64+0xca/0x1c0 [ 23.292914][ T355] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 23.298634][ T355] Modules linked in: [ 23.302594][ T355] ---[ end trace 4763ee4d1b672c26 ]--- [ 23.307905][ T355] RIP: 0010:ext4_trim_fs+0x1e69/0x1e80 [ 23.313575][ T355] Code: 80 e1 07 80 c1 03 38 c1 0f 8c 40 e7 ff ff 48 8d bc 24 f0 01 00 00 e8 76 c4 c8 ff e9 2e e7 ff ff e8 bc a8 6f ff e8 87 f0 98 ff <0f> 0b e8 80 f0 98 ff 0f 0b 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f [ 23.333193][ T355] RSP: 0018:ffff8881dc7e7500 EFLAGS: 00010293 [ 23.339152][ T355] RAX: ffffffff81cb5699 RBX: 0000000000000001 RCX: ffff8881dc431f80 [ 23.347085][ T355] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000050186 [ 23.355021][ T355] RBP: ffff8881dc7e7770 R08: ffffffff81cb4014 R09: 0000000000000003 [ 23.362872][ T355] R10: ffffffffffffffff R11: dffffc0000000001 R12: 0000000000000001 [ 23.370672][ T355] R13: dffffc0000000000 R14: ffff8881dc15e000 R15: 0000000000050186 [ 23.378479][ T355] FS: 0000555555fa8380(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 23.387472][ T355] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.393871][ T355] CR2: 000000002010007f CR3: 00000001dc61c000 CR4: 00000000003406b0 [ 23.401728][ T355] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.409600][ T355] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.417550][ T355] Kernel panic - not syncing: Fatal exception [ 23.423629][ T355] Kernel Offset: disabled [ 23.427757][ T355] Rebooting in 86400 seconds..