EXT4-fs error (device loop2): ext4_find_dest_de:2115: inode #12: block 7: comm syz.2.487: bad entry in directory: rec_len is too small for name_len - offset=16, inode=14, rec_len=40, size=56 fake=0 EXT4-fs (loop2): Remounting filesystem read-only ------------[ cut here ]------------ refcount_t: saturated; leaking memory. WARNING: CPU: 0 PID: 6736 at lib/refcount.c:22 refcount_warn_saturate+0x153/0x1a0 lib/refcount.c:22 Modules linked in: CPU: 0 PID: 6736 Comm: syz.2.487 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 RIP: 0010:refcount_warn_saturate+0x153/0x1a0 lib/refcount.c:22 Code: 09 01 48 c7 c7 c0 d7 de 8a e8 19 a0 3c fd 0f 0b eb 8c e8 90 31 71 fd c6 05 df 3c fa 09 01 48 c7 c7 c0 d7 de 8a e8 fd 9f 3c fd <0f> 0b e9 6d ff ff ff e8 71 31 71 fd c6 05 c4 3c fa 09 01 48 c7 c7 RSP: 0018:ffffc9001bbbf798 EFLAGS: 00010246 RAX: d90d205701d50100 RBX: 0000000000000001 RCX: 0000000000080000 RDX: ffffc900106f7000 RSI: 00000000000034d0 RDI: 00000000000034d1 RBP: 00000000ffffffff R08: ffffc9001bbbf427 R09: 1ffff92003777e84 R10: dffffc0000000000 R11: fffff52003777e85 R12: ffff8881473d6618 R13: ffffffff96c54860 R14: 0000000000000001 R15: ffff8881473d6600 FS: 00007f27311776c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2fdfeff8 CR3: 000000007c9e1000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __refcount_add include/linux/refcount.h:-1 [inline] __refcount_inc include/linux/refcount.h:250 [inline] refcount_inc include/linux/refcount.h:267 [inline] kref_get include/linux/kref.h:45 [inline] dvb_device_get drivers/media/dvb-core/dvbdev.c:631 [inline] dvb_device_open+0x330/0x370 drivers/media/dvb-core/dvbdev.c:106 chrdev_open+0x5c5/0x6a0 fs/char_dev.c:414 do_dentry_open+0x7e9/0x10d0 fs/open.c:882 do_open fs/namei.c:3634 [inline] path_openat+0x2635/0x2ee0 fs/namei.c:3791 do_filp_open+0x1f1/0x430 fs/namei.c:3818 do_sys_openat2+0x150/0x4b0 fs/open.c:1320 do_sys_open fs/open.c:1336 [inline] __do_sys_openat fs/open.c:1352 [inline] __se_sys_openat fs/open.c:1347 [inline] __x64_sys_openat+0x135/0x160 fs/open.c:1347 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f273035d68e Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 RSP: 002b:00007f2731176b28 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f27311776c0 RCX: 00007f273035d68e RDX: 0000000000000002 RSI: 00007f2731176c00 RDI: ffffffffffffff9c RBP: 00007f2731176c00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: cccccccccccccccd R13: 00007f2730616218 R14: 00007f2730616180 R15: 00007ffefe0d4318