./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1222853052 <...> Warning: Permanently added '10.128.0.55' (ED25519) to the list of known hosts. execve("./syz-executor1222853052", ["./syz-executor1222853052"], 0x7ffdc8c5c8e0 /* 10 vars */) = 0 brk(NULL) = 0x555574c9a000 brk(0x555574c9ad00) = 0x555574c9ad00 arch_prctl(ARCH_SET_FS, 0x555574c9a380) = 0 set_tid_address(0x555574c9a650) = 296 set_robust_list(0x555574c9a660, 24) = 0 rseq(0x555574c9aca0, 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-executor1222853052", 4096) = 28 getrandom("\x70\x3f\xcc\xd7\xc2\x46\x23\x3b", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555574c9ad00 brk(0x555574cbbd00) = 0x555574cbbd00 brk(0x555574cbc000) = 0x555574cbc000 mprotect(0x7f6fafb36000, 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) = 0x7f6fa7681000 [ 25.023942][ T28] audit: type=1400 audit(1737586318.968:66): avc: denied { execmem } for pid=296 comm="syz-executor122" 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(0x7f6fa7681000, 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 [ 25.125183][ T28] audit: type=1400 audit(1737586319.068:67): avc: denied { read write } for pid=296 comm="syz-executor122" 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 [ 25.126330][ T296] loop0: detected capacity change from 0 to 40427 [ 25.149301][ T28] audit: type=1400 audit(1737586319.068:68): avc: denied { open } for pid=296 comm="syz-executor122" 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 [ 25.164414][ T296] ================================================================================ [ 25.183279][ T28] audit: type=1400 audit(1737586319.068:69): avc: denied { ioctl } for pid=296 comm="syz-executor122" 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 [ 25.189622][ T296] UBSAN: shift-out-of-bounds in fs/f2fs/super.c:919:5 [ 25.214044][ T28] audit: type=1400 audit(1737586319.098:70): avc: denied { mounton } for pid=296 comm="syz-executor122" path="/root/file2" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 25.243282][ T296] shift exponent 105 is too large for 64-bit type 'unsigned long' [ 25.251279][ T296] CPU: 0 PID: 296 Comm: syz-executor122 Not tainted 6.1.118-syzkaller-00022-g0405a25a6ed7 #0 [ 25.261251][ T296] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 [ 25.271233][ T296] Call Trace: [ 25.274364][ T296] [ 25.277134][ T296] dump_stack_lvl+0x151/0x1b7 [ 25.281653][ T296] ? nf_tcp_handle_invalid+0x3f1/0x3f1 [ 25.286941][ T296] dump_stack+0x15/0x18 [ 25.291019][ T296] __ubsan_handle_shift_out_of_bounds+0x3e1/0x440 [ 25.297280][ T296] parse_options+0x4b19/0x4b30 [ 25.301871][ T296] ? mount_bdev+0x282/0x3b0 [ 25.306214][ T296] ? f2fs_mount+0x34/0x40 [ 25.310384][ T296] ? default_options+0xc60/0xc60 [ 25.315150][ T296] ? kstrdup+0x54/0x70 [ 25.319055][ T296] ? memcpy+0x56/0x70 [ 25.322877][ T296] f2fs_fill_super+0x23bc/0x6dc0 [ 25.327654][ T296] ? kill_f2fs_super+0x3c0/0x3c0 [ 25.332422][ T296] ? set_blocksize+0x1cb/0x360 [ 25.337023][ T296] ? sb_set_blocksize+0xa8/0xf0 [ 25.341707][ T296] mount_bdev+0x282/0x3b0 [ 25.345874][ T296] ? kill_f2fs_super+0x3c0/0x3c0 [ 25.350645][ T296] f2fs_mount+0x34/0x40 [ 25.354659][ T296] legacy_get_tree+0xf1/0x190 [ 25.359151][ T296] ? trace_raw_output_f2fs__rw_end+0x110/0x110 [ 25.365141][ T296] vfs_get_tree+0x88/0x290 [ 25.369391][ T296] do_new_mount+0x2ba/0xb30 [ 25.373734][ T296] ? do_move_mount_old+0x160/0x160 [ 25.378680][ T296] ? security_capable+0x87/0xb0 [ 25.383368][ T296] ? ns_capable+0x89/0xe0 [ 25.387530][ T296] path_mount+0x671/0x1070 [ 25.391785][ T296] ? user_path_at_empty+0x14e/0x1a0 [ 25.396835][ T296] __se_sys_mount+0x2c4/0x3b0 [ 25.401333][ T296] ? __x64_sys_mount+0xd0/0xd0 [ 25.405932][ T296] ? fpregs_restore_userregs+0x130/0x290 [ 25.411401][ T296] __x64_sys_mount+0xbf/0xd0 [ 25.415827][ T296] x64_sys_call+0x49d/0x9a0 [ 25.420167][ T296] do_syscall_64+0x3b/0xb0 [ 25.424421][ T296] ? clear_bhb_loop+0x55/0xb0 [ 25.428966][ T296] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 25.434661][ T296] RIP: 0033:0x7f6fafabfcfa [ 25.438913][ 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 [ 25.458410][ T296] RSP: 002b:00007ffd732a6238 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 25.466605][ T296] RAX: ffffffffffffffda RBX: 00007ffd732a6250 RCX: 00007f6fafabfcfa 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 [ 25.474415][ T296] RDX: 0000000020000040 RSI: 00000000200000c0 RDI: 00007ffd732a6250 [ 25.482222][ T296] RBP: 0000000000000004 R08: 00007ffd732a6290 R09: 00000000000054fa [ 25.490046][ T296] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000000 [ 25.497848][ T296] R13: 00007ffd732a6290 R14: 0000000000000003 R15: 00000000013bd7ef [ 25.505657][ T296] [ 25.508733][ T296] ================================================================================ [ 25.517848][ 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 +++