===================================================== BUG: KMSAN: uninit-value in path_init+0x1002/0x1bf0 path_init+0x1002/0x1bf0 path_lookupat+0x7a/0x890 filename_lookup+0x375/0xa40 fs_lookup_param+0x336/0x6d0 ext4_parse_param+0x219c/0x45f0 parse_apply_sb_mount_options+0x6c5/0x1400 ext4_fill_super+0x3952/0x11bf0 get_tree_bdev+0x9ef/0xdd0 ext4_get_tree+0x54/0x60 vfs_get_tree+0xdc/0x5d0 do_new_mount+0x7ae/0x16f0 path_mount+0xf8e/0x26c0 __se_sys_mount+0x8e0/0x9b0 __ia32_sys_mount+0x15b/0x1b0 __do_fast_syscall_32+0x95/0xf0 do_fast_syscall_32+0x33/0x70 do_SYSENTER_32+0x1b/0x20 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c Uninit was stored to memory at: filename_lookup+0x550/0xa40 fs_lookup_param+0x336/0x6d0 ext4_parse_param+0x219c/0x45f0 parse_apply_sb_mount_options+0x6c5/0x1400 ext4_fill_super+0x3952/0x11bf0 get_tree_bdev+0x9ef/0xdd0 ext4_get_tree+0x54/0x60 vfs_get_tree+0xdc/0x5d0 do_new_mount+0x7ae/0x16f0 path_mount+0xf8e/0x26c0 __se_sys_mount+0x8e0/0x9b0 __ia32_sys_mount+0x15b/0x1b0 __do_fast_syscall_32+0x95/0xf0 do_fast_syscall_32+0x33/0x70 do_SYSENTER_32+0x1b/0x20 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c Local variable param.i created at: parse_apply_sb_mount_options+0x393/0x1400 ext4_fill_super+0x3952/0x11bf0 CPU: 0 PID: 16679 Comm: syz-executor.4 Tainted: G W 5.18.0-syzkaller-16253-g2f3064574275 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 =====================================================