./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2155012567 <...> [ 4.655506][ T102] udevadm (102) used greatest stack depth: 22096 bytes left [ 6.286058][ T30] kauditd_printk_skb: 47 callbacks suppressed [ 6.286074][ T30] audit: type=1400 audit(1738219974.285:58): avc: denied { use } for pid=181 comm="ssh-keygen" path="/dev/null" dev="devtmpfs" ino=4 scontext=system_u:system_r:ssh_keygen_t tcontext=system_u:system_r:kernel_t tclass=fd permissive=1 [ 6.383366][ T30] audit: type=1400 audit(1738219974.385:59): avc: denied { search } for pid=181 comm="ssh-keygen" name="/" dev="tmpfs" ino=1 scontext=system_u:system_r:ssh_keygen_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 6.446812][ T30] audit: type=1400 audit(1738219974.445:60): avc: denied { use } for pid=186 comm="sshd" path="/dev/null" dev="devtmpfs" ino=4 scontext=system_u:system_r:sshd_t tcontext=system_u:system_r:kernel_t tclass=fd permissive=1 [ 13.146195][ T30] audit: type=1400 audit(1738219981.145:61): avc: denied { transition } for pid=224 comm="sshd" path="/bin/sh" dev="sda1" ino=89 scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 13.152424][ T30] audit: type=1400 audit(1738219981.145:62): avc: denied { noatsecure } for pid=224 comm="sshd" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 13.158210][ T30] audit: type=1400 audit(1738219981.155:63): avc: denied { write } for pid=224 comm="sh" path="pipe:[14447]" dev="pipefs" ino=14447 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:sshd_t tclass=fifo_file permissive=1 [ 13.164448][ T30] audit: type=1400 audit(1738219981.155:64): avc: denied { rlimitinh } for pid=224 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 13.177869][ T30] audit: type=1400 audit(1738219981.155:65): avc: denied { siginh } for pid=224 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 Warning: Permanently added '10.128.0.66' (ED25519) to the list of known hosts. execve("./syz-executor2155012567", ["./syz-executor2155012567"], 0x7ffcc018a490 /* 10 vars */) = 0 brk(NULL) = 0x55558c8e5000 brk(0x55558c8e5d00) = 0x55558c8e5d00 arch_prctl(ARCH_SET_FS, 0x55558c8e5380) = 0 set_tid_address(0x55558c8e5650) = 294 set_robust_list(0x55558c8e5660, 24) = 0 rseq(0x55558c8e5ca0, 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-executor2155012567", 4096) = 28 getrandom("\x5b\x8f\x8f\xae\x38\xdd\x27\xa8", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55558c8e5d00 brk(0x55558c906d00) = 0x55558c906d00 brk(0x55558c907000) = 0x55558c907000 mprotect(0x7f1c0ec69000, 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) = 0x7f1c067b4000 [ 23.242436][ T30] audit: type=1400 audit(1738219991.245:66): avc: denied { execmem } for pid=294 comm="syz-executor215" 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(0x7f1c067b4000, 138412032) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 [ 23.351838][ T30] audit: type=1400 audit(1738219991.355:67): avc: denied { read write } for pid=294 comm="syz-executor215" 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 [ 23.352721][ T294] loop0: detected capacity change from 0 to 40427 [ 23.376035][ T30] audit: type=1400 audit(1738219991.355:68): avc: denied { open } for pid=294 comm="syz-executor215" 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 [ 23.406137][ T30] audit: type=1400 audit(1738219991.355:69): avc: denied { ioctl } for pid=294 comm="syz-executor215" 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 close(4) = 0 mkdir("./file2", 0777) = 0 [ 23.510820][ T30] audit: type=1400 audit(1738219991.515:70): avc: denied { mounton } for pid=294 comm="syz-executor215" path="/root/file2" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 23.520298][ T294] ================================================================================ [ 23.542461][ T294] UBSAN: shift-out-of-bounds in fs/f2fs/super.c:901:5 [ 23.549160][ T294] shift exponent 105 is too large for 32-bit type 'int' [ 23.555907][ T294] CPU: 1 PID: 294 Comm: syz-executor215 Not tainted 5.15.176-syzkaller-00066-gd1a25a6a4b3b #0 [ 23.566057][ T294] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 [ 23.575958][ T294] Call Trace: [ 23.579077][ T294] [ 23.581853][ T294] dump_stack_lvl+0x151/0x1c0 [ 23.586369][ T294] ? io_uring_drop_tctx_refs+0x190/0x190 [ 23.591847][ T294] ? slab_free_freelist_hook+0xbd/0x190 [ 23.597219][ T294] dump_stack+0x15/0x20 [ 23.601208][ T294] __ubsan_handle_shift_out_of_bounds+0x3bf/0x420 [ 23.607463][ T294] ? ____kasan_kmalloc+0xed/0x110 [ 23.612320][ T294] parse_options+0x460f/0x4620 [ 23.616915][ T294] ? do_syscall_64+0x3b/0xb0 [ 23.621342][ T294] ? entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 23.627249][ T294] ? default_options+0xa20/0xa20 [ 23.632030][ T294] ? memcpy+0x56/0x70 [ 23.635837][ T294] f2fs_fill_super+0x2e83/0x8190 [ 23.640619][ T294] ? kill_f2fs_super+0x3c0/0x3c0 [ 23.645385][ T294] ? vscnprintf+0x80/0x80 [ 23.649549][ T294] ? set_blocksize+0x1f0/0x380 [ 23.654161][ T294] ? sb_set_blocksize+0xa8/0xf0 [ 23.658848][ T294] mount_bdev+0x282/0x3b0 [ 23.663007][ T294] ? kill_f2fs_super+0x3c0/0x3c0 [ 23.667778][ T294] f2fs_mount+0x34/0x40 [ 23.671770][ T294] legacy_get_tree+0xf1/0x190 [ 23.676284][ T294] ? trace_raw_output_f2fs__rw_end+0x110/0x110 [ 23.682273][ T294] vfs_get_tree+0x88/0x290 [ 23.686522][ T294] do_new_mount+0x2ba/0xb30 [ 23.690865][ T294] ? do_move_mount_old+0x160/0x160 [ 23.695811][ T294] ? security_capable+0x87/0xb0 [ 23.700499][ T294] ? ns_capable+0x89/0xe0 [ 23.704666][ T294] path_mount+0x671/0x1070 [ 23.708922][ T294] __se_sys_mount+0x2c4/0x3b0 [ 23.713453][ T294] ? __x64_sys_mount+0xd0/0xd0 [ 23.718048][ T294] ? __kasan_check_write+0x14/0x20 [ 23.723065][ T294] __x64_sys_mount+0xbf/0xd0 [ 23.727492][ T294] x64_sys_call+0x49d/0x9a0 [ 23.731831][ T294] do_syscall_64+0x3b/0xb0 [ 23.736113][ T294] ? clear_bhb_loop+0x35/0x90 [ 23.740599][ T294] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 23.746333][ T294] RIP: 0033:0x7f1c0ebf2cfa [ 23.750581][ 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 [ 23.770107][ T294] RSP: 002b:00007ffff9095f88 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 23.778439][ T294] RAX: ffffffffffffffda RBX: 00007ffff9095fa0 RCX: 00007f1c0ebf2cfa [ 23.786306][ T294] RDX: 0000000020000040 RSI: 00000000200000c0 RDI: 00007ffff9095fa0 [ 23.794064][ T294] RBP: 0000000000000004 R08: 00007ffff9095fe0 R09: 00000000000054fa [ 23.801875][ T294] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000000 [ 23.809698][ T294] R13: 00007ffff9095fe0 R14: 0000000000000003 R15: 00000000013bd7ef [ 23.817541][ T294] [ 23.820514][ T294] ================================================================================ [ 23.829760][ 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 +++