ci2-android-6-1/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci2-android-6-1/syz-executor1570101665 <...> Warning: Permanently added '10.128.1.141' (ED25519) to the list of known hosts. execve("ci2-android-6-1/syz-executor1570101665", ["ci2-android-6-1/syz-executor1570101665"], 0x7ffe3ce495a0 /* 10 vars */) = 0 brk(NULL) = 0x5555726d6000 brk(0x5555726d6d40) = 0x5555726d6d40 arch_prctl(ARCH_SET_FS, 0x5555726d63c0) = 0 set_tid_address(0x5555726d6690) = 305 set_robust_list(0x5555726d66a0, 24) = 0 rseq({cpu_id_start=0, cpu_id=RSEQ_CPU_ID_UNINITIALIZED, rseq_cs=NULL, flags=0, node_id=0, mm_cid=0, slice_ctrl={request=0, granted=0, __reserved=0}, __reserved=0}, 32, 0, 0x53053053) = -1 ENOSYS (Function not implemented) prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlinkat(AT_FDCWD, "/proc/self/exe", "/root/ci2-android-6-1/syz-executor1570101665", 4096) = 44 getrandom("\x21\x51\x57\x12\xe1\xa0\xe1\x06", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555726d6d40 brk(0x5555726f7d40) = 0x5555726f7d40 brk(0x5555726f8000) = 0x5555726f8000 mprotect(0x7fd27576e000, 20480, PROT_READ) = 0 mmap(0x1ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffffffff000 mmap(0x200000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200000000000 mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200001000000 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) = 0x7fd26d2bd000 executing program [ 26.147532][ T28] audit: type=1400 audit(1793327330.385:64): avc: denied { execmem } for pid=305 comm="syz-executor157" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 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"..., 20699119) = 20699119 munmap(0x7fd26d2bd000, 138412032) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 26.248667][ T28] audit: type=1400 audit(1793327330.495:65): avc: denied { read write } for pid=305 comm="syz-executor157" name="loop0" dev="devtmpfs" ino=118 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 26.250562][ T305] loop0: detected capacity change from 0 to 40427 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 close(4) = 0 mkdir("./file0", 0777) = 0 [ 26.273749][ T28] audit: type=1400 audit(1793327330.495:66): avc: denied { open } for pid=305 comm="syz-executor157" path="/dev/loop0" dev="devtmpfs" ino=118 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 26.301651][ T305] ================================================================================ [ 26.314093][ T28] audit: type=1400 audit(1793327330.495:67): avc: denied { ioctl } for pid=305 comm="syz-executor157" path="/dev/loop0" dev="devtmpfs" ino=118 ioctlcmd=0x4c00 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 26.315778][ T305] UBSAN: shift-out-of-bounds in fs/f2fs/super.c:955:5 [ 26.340718][ T28] audit: type=1400 audit(1793327330.545:68): avc: denied { mounton } for pid=305 comm="syz-executor157" path="/root/file0" dev="sda1" ino=2025 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 26.348176][ T305] shift exponent 160 is too large for 64-bit type 'unsigned long' [ 26.377608][ T305] CPU: 1 PID: 305 Comm: syz-executor157 Not tainted syzkaller #0 [ 26.385441][ T305] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026 [ 26.395561][ T305] Call Trace: [ 26.398872][ T305] [ 26.401834][ T305] __dump_stack+0x21/0x24 [ 26.406226][ T305] dump_stack_lvl+0x110/0x170 [ 26.410938][ T305] ? __cfi_dump_stack_lvl+0x8/0x8 [ 26.416020][ T305] ? __kasan_slab_free+0x11/0x20 [ 26.421012][ T305] dump_stack+0x15/0x24 [ 26.425245][ T305] ubsan_epilogue+0xe/0x40 [ 26.429895][ T305] __ubsan_handle_shift_out_of_bounds+0x364/0x3f0 [ 26.436368][ T305] ? match_int+0x142/0x1a0 [ 26.440851][ T305] parse_options+0x4d05/0x4d30 [ 26.445654][ T305] ? mount_bdev+0x29b/0x3d0 [ 26.450193][ T305] ? f2fs_mount+0x34/0x40 [ 26.454534][ T305] ? legacy_get_tree+0xfe/0x1a0 [ 26.459444][ T305] ? default_options+0xce0/0xce0 [ 26.464397][ T305] ? kstrdup+0x56/0x80 [ 26.468475][ T305] ? memcpy+0x56/0x70 [ 26.472474][ T305] f2fs_fill_super+0x266c/0x7460 [ 26.477439][ T305] ? __cfi_f2fs_fill_super+0x10/0x10 [ 26.482845][ T305] ? mutex_unlock+0x8f/0x230 [ 26.487460][ T305] ? set_blocksize+0x1cc/0x470 [ 26.492255][ T305] ? sb_set_blocksize+0xaa/0xf0 [ 26.497116][ T305] ? __cfi_f2fs_fill_super+0x10/0x10 [ 26.502411][ T305] mount_bdev+0x29b/0x3d0 [ 26.506740][ T305] ? __cfi_f2fs_fill_super+0x10/0x10 [ 26.512028][ T305] f2fs_mount+0x34/0x40 [ 26.516185][ T305] legacy_get_tree+0xfe/0x1a0 [ 26.520877][ T305] ? __cfi_f2fs_mount+0x10/0x10 [ 26.525728][ T305] vfs_get_tree+0x9a/0x270 [ 26.530159][ T305] do_new_mount+0x251/0xb40 [ 26.534681][ T305] ? security_capable+0x99/0xc0 [ 26.539555][ T305] path_mount+0x640/0xfd0 [ 26.543930][ T305] __se_sys_mount+0x320/0x390 [ 26.548626][ T305] ? __x64_sys_mount+0xd0/0xd0 [ 26.553408][ T305] ? fpregs_restore_userregs+0x128/0x260 [ 26.559094][ T305] __x64_sys_mount+0xbf/0xd0 [ 26.563700][ T305] x64_sys_call+0x65d/0x9a0 [ 26.568226][ T305] do_syscall_64+0x4c/0xa0 [ 26.572678][ T305] ? clear_bhb_loop+0x30/0x80 [ 26.577379][ T305] ? clear_bhb_loop+0x30/0x80 [ 26.582072][ T305] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 26.587984][ T305] RIP: 0033:0x7fd2756e075a [ 26.592433][ T305] Code: 56 53 b8 9d 00 00 00 0f 05 83 f8 ea 75 a2 c7 05 34 33 09 00 00 00 00 00 eb 96 e8 61 05 00 00 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 d8 ff ff ff f7 d8 64 89 01 48 [ 26.612059][ T305] RSP: 002b:00007ffc80805468 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 26.620598][ T305] RAX: ffffffffffffffda RBX: 00007ffc80805480 RCX: 00007fd2756e075a [ 26.628587][ T305] RDX: 00002000000001c0 RSI: 0000200000000200 RDI: 00007ffc80805480 [ 26.636574][ T305] RBP: 0000200000000200 R08: 00007ffc808054c0 R09: 0000000000000000 mount("/dev/loop0", "./file0", "f2fs", MS_NODIRATIME|MS_POSIXACL, "io_bits=00000000000000000240,active_logs=4,noquota,noquota,fastboot,checkpoint=enable,jqfmt=vfsv0,da"...) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "/dev/loop0", O_RDONLY) = 3 [ 26.644575][ T305] R10: 0000000000010800 R11: 0000000000000286 R12: 00002000000001c0 [ 26.652578][ T305] R13: 00007ffc808054c0 R14: 0000000000000003 R15: 0000000000010800 [ 26.660685][ T305] [ 26.663938][ T305] ================================================================================ [ 26.673392][ T305] F2FS-fs (loop0): Not support 4294967296, larger than 256 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 exit_group(0) = ? +++ exited with 0 +++