./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3122958735 <...> Warning: Permanently added '10.128.0.21' (ED25519) to the list of known hosts. execve("./syz-executor3122958735", ["./syz-executor3122958735"], 0x7ffe7c81cfe0 /* 10 vars */) = 0 brk(NULL) = 0x555572e64000 brk(0x555572e64d00) = 0x555572e64d00 arch_prctl(ARCH_SET_FS, 0x555572e64380) = 0 set_tid_address(0x555572e64650) = 296 set_robust_list(0x555572e64660, 24) = 0 rseq(0x555572e64ca0, 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-executor3122958735", 4096) = 28 getrandom("\x14\xc8\x19\x97\x92\xf2\x91\x7f", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555572e64d00 brk(0x555572e85d00) = 0x555572e85d00 brk(0x555572e86000) = 0x555572e86000 mprotect(0x7fb648211000, 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) = 0x7fb63fd5c000 [ 22.749205][ T28] audit: type=1400 audit(1737424128.914:66): avc: denied { execmem } for pid=296 comm="syz-executor312" 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(0x7fb63fd5c000, 138412032) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 close(4) = 0 mkdir("./file2", 0777) = 0 [ 22.830724][ T28] audit: type=1400 audit(1737424128.994:67): avc: denied { read write } for pid=296 comm="syz-executor312" 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 [ 22.831439][ T296] loop0: detected capacity change from 0 to 40427 [ 22.854907][ T28] audit: type=1400 audit(1737424128.994:68): avc: denied { open } for pid=296 comm="syz-executor312" 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 [ 22.868616][ T296] ================================================================================ [ 22.887726][ T28] audit: type=1400 audit(1737424128.994:69): avc: denied { ioctl } for pid=296 comm="syz-executor312" 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 [ 22.894412][ T296] UBSAN: shift-out-of-bounds in fs/f2fs/super.c:919:5 [ 22.919529][ T28] audit: type=1400 audit(1737424129.024:70): avc: denied { mounton } for pid=296 comm="syz-executor312" path="/root/file2" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 22.926515][ T296] shift exponent 105 is too large for 64-bit type 'unsigned long' [ 22.956282][ T296] CPU: 1 PID: 296 Comm: syz-executor312 Not tainted 6.1.118-syzkaller-00021-gd12538e9da37 #0 [ 22.966207][ T296] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 [ 22.976099][ T296] Call Trace: [ 22.979237][ T296] [ 22.982124][ T296] dump_stack_lvl+0x151/0x1b7 [ 22.986628][ T296] ? nf_tcp_handle_invalid+0x3f1/0x3f1 [ 22.991925][ T296] dump_stack+0x15/0x18 [ 22.995916][ T296] __ubsan_handle_shift_out_of_bounds+0x3e1/0x440 [ 23.002164][ T296] parse_options+0x4b19/0x4b30 [ 23.006760][ T296] ? mount_bdev+0x282/0x3b0 [ 23.011104][ T296] ? f2fs_mount+0x34/0x40 [ 23.015269][ T296] ? default_options+0xc60/0xc60 [ 23.020045][ T296] ? kstrdup+0x54/0x70 [ 23.023949][ T296] ? memcpy+0x56/0x70 [ 23.027766][ T296] f2fs_fill_super+0x23bc/0x6dc0 [ 23.032544][ T296] ? kill_f2fs_super+0x3c0/0x3c0 [ 23.037322][ T296] ? set_blocksize+0x1cb/0x360 [ 23.041919][ T296] ? sb_set_blocksize+0xa8/0xf0 [ 23.046606][ T296] mount_bdev+0x282/0x3b0 [ 23.050769][ T296] ? kill_f2fs_super+0x3c0/0x3c0 [ 23.055544][ T296] f2fs_mount+0x34/0x40 [ 23.059533][ T296] legacy_get_tree+0xf1/0x190 [ 23.064054][ T296] ? trace_raw_output_f2fs__rw_end+0x110/0x110 [ 23.070036][ T296] vfs_get_tree+0x88/0x290 [ 23.074289][ T296] do_new_mount+0x2ba/0xb30 [ 23.078626][ T296] ? do_move_mount_old+0x160/0x160 [ 23.083581][ T296] ? security_capable+0x87/0xb0 [ 23.088261][ T296] ? ns_capable+0x89/0xe0 [ 23.092426][ T296] path_mount+0x671/0x1070 [ 23.096680][ T296] ? user_path_at_empty+0x14e/0x1a0 [ 23.101718][ T296] __se_sys_mount+0x2c4/0x3b0 [ 23.106235][ T296] ? __x64_sys_mount+0xd0/0xd0 [ 23.110833][ T296] ? fpregs_restore_userregs+0x130/0x290 [ 23.116304][ T296] __x64_sys_mount+0xbf/0xd0 [ 23.120723][ T296] x64_sys_call+0x49d/0x9a0 [ 23.125070][ T296] do_syscall_64+0x3b/0xb0 [ 23.129315][ T296] ? clear_bhb_loop+0x55/0xb0 [ 23.133828][ T296] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 23.139558][ T296] RIP: 0033:0x7fb64819acfa [ 23.143821][ T296] 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 [ 23.163252][ T296] RSP: 002b:00007ffc3d1d93e8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 23.171497][ T296] RAX: ffffffffffffffda RBX: 00007ffc3d1d9400 RCX: 00007fb64819acfa 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 [ 23.179308][ T296] RDX: 0000000020000040 RSI: 00000000200000c0 RDI: 00007ffc3d1d9400 [ 23.187118][ T296] RBP: 0000000000000004 R08: 00007ffc3d1d9440 R09: 00000000000054fa [ 23.194929][ T296] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000000 [ 23.202741][ T296] R13: 00007ffc3d1d9440 R14: 0000000000000003 R15: 00000000013bd7ef [ 23.210558][ T296] [ 23.213885][ T296] ================================================================================ [ 23.223147][ T296] F2FS-fs (loop0): Not support 2199023255552, larger than 256 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 exit_group(0) = ? +++ exited with 0 +++