./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2613131979 <...> Warning: Permanently added '10.128.1.137' (ED25519) to the list of known hosts. execve("./syz-executor2613131979", ["./syz-executor2613131979"], 0x7ffe6be395d0 /* 10 vars */) = 0 brk(NULL) = 0x555569ad2000 brk(0x555569ad2d00) = 0x555569ad2d00 arch_prctl(ARCH_SET_FS, 0x555569ad2380) = 0 set_tid_address(0x555569ad2650) = 294 set_robust_list(0x555569ad2660, 24) = 0 rseq(0x555569ad2ca0, 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-executor2613131979", 4096) = 28 getrandom("\xac\x57\x8a\xf3\xff\x61\x1f\x20", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555569ad2d00 brk(0x555569af3d00) = 0x555569af3d00 brk(0x555569af4000) = 0x555569af4000 mprotect(0x7f78fc61c000, 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) = 0x7f78f4167000 [ 22.809380][ T30] audit: type=1400 audit(1738471916.075:66): avc: denied { execmem } for pid=294 comm="syz-executor261" 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(0x7f78f4167000, 138412032) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 [ 22.911623][ T30] audit: type=1400 audit(1738471916.175:67): avc: denied { read write } for pid=294 comm="syz-executor261" name="loop0" dev="devtmpfs" ino=112 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 22.912520][ T294] loop0: detected capacity change from 0 to 40427 close(4) = 0 mkdir("./file2", 0777) = 0 [ 22.935900][ T30] audit: type=1400 audit(1738471916.175:68): avc: denied { open } for pid=294 comm="syz-executor261" path="/dev/loop0" dev="devtmpfs" ino=112 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 22.965881][ T30] audit: type=1400 audit(1738471916.175:69): avc: denied { ioctl } for pid=294 comm="syz-executor261" path="/dev/loop0" dev="devtmpfs" ino=112 ioctlcmd=0x4c00 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 23.018330][ T30] audit: type=1400 audit(1738471916.285:70): avc: denied { mounton } for pid=294 comm="syz-executor261" path="/root/file2" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 23.107660][ T294] ================================================================================ [ 23.116807][ T294] UBSAN: shift-out-of-bounds in fs/f2fs/super.c:901:5 [ 23.123368][ T294] shift exponent 105 is too large for 32-bit type 'int' [ 23.130189][ T294] CPU: 1 PID: 294 Comm: syz-executor261 Not tainted 5.15.176-syzkaller-00066-gd1a25a6a4b3b #0 [ 23.140201][ T294] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 [ 23.150101][ T294] Call Trace: [ 23.153218][ T294] [ 23.155997][ T294] dump_stack_lvl+0x151/0x1c0 [ 23.160512][ T294] ? io_uring_drop_tctx_refs+0x190/0x190 [ 23.165977][ T294] ? slab_free_freelist_hook+0xbd/0x190 [ 23.171361][ T294] dump_stack+0x15/0x20 [ 23.175349][ T294] __ubsan_handle_shift_out_of_bounds+0x3bf/0x420 [ 23.181599][ T294] ? ____kasan_kmalloc+0xed/0x110 [ 23.186458][ T294] parse_options+0x460f/0x4620 [ 23.191062][ T294] ? do_syscall_64+0x3b/0xb0 [ 23.195486][ T294] ? entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 23.201395][ T294] ? default_options+0xa20/0xa20 [ 23.206162][ T294] ? memcpy+0x56/0x70 [ 23.209982][ T294] f2fs_fill_super+0x2e83/0x8190 [ 23.214943][ T294] ? kill_f2fs_super+0x3c0/0x3c0 [ 23.219700][ T294] ? vscnprintf+0x80/0x80 [ 23.223865][ T294] ? set_blocksize+0x1f0/0x380 [ 23.228468][ T294] ? sb_set_blocksize+0xa8/0xf0 [ 23.233155][ T294] mount_bdev+0x282/0x3b0 [ 23.237320][ T294] ? kill_f2fs_super+0x3c0/0x3c0 [ 23.242093][ T294] f2fs_mount+0x34/0x40 [ 23.246086][ T294] legacy_get_tree+0xf1/0x190 [ 23.250600][ T294] ? trace_raw_output_f2fs__rw_end+0x110/0x110 [ 23.256597][ T294] vfs_get_tree+0x88/0x290 [ 23.260848][ T294] do_new_mount+0x2ba/0xb30 [ 23.265181][ T294] ? do_move_mount_old+0x160/0x160 [ 23.270218][ T294] ? security_capable+0x87/0xb0 [ 23.274905][ T294] ? ns_capable+0x89/0xe0 [ 23.279069][ T294] path_mount+0x671/0x1070 [ 23.283324][ T294] __se_sys_mount+0x2c4/0x3b0 [ 23.287837][ T294] ? __x64_sys_mount+0xd0/0xd0 [ 23.292433][ T294] ? __kasan_check_write+0x14/0x20 [ 23.297380][ T294] __x64_sys_mount+0xbf/0xd0 [ 23.301810][ T294] x64_sys_call+0x49d/0x9a0 [ 23.306145][ T294] do_syscall_64+0x3b/0xb0 [ 23.310397][ T294] ? clear_bhb_loop+0x35/0x90 [ 23.314913][ T294] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 23.320648][ T294] RIP: 0033:0x7f78fc5a5cfa [ 23.324986][ T294] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 5e 04 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 23.344422][ T294] RSP: 002b:00007fff385a1eb8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 23.352665][ T294] RAX: ffffffffffffffda RBX: 00007fff385a1ed0 RCX: 00007f78fc5a5cfa [ 23.360475][ T294] RDX: 0000000020000040 RSI: 00000000200000c0 RDI: 00007fff385a1ed0 [ 23.368287][ T294] RBP: 0000000000000004 R08: 00007fff385a1f10 R09: 00000000000054fa [ 23.376100][ T294] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000000 [ 23.383914][ T294] R13: 00007fff385a1f10 R14: 0000000000000003 R15: 00000000013bd7ef [ 23.391728][ T294] [ 23.394644][ T294] ================================================================================ [ 23.403753][ T294] F2FS-fs (loop0): Not support 512, larger than 256 mount("/dev/loop0", "./file2", "f2fs", 0, "nouser_xattr,active_logs=4,active_logs=4,noquota,noflush_merge,io_bits=00000000000000000151,prjjquot"...) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 exit_group(0) = ? +++ exited with 0 +++