------------[ cut here ]------------ WARNING: CPU: 1 PID: 7921 at fs/readdir.c:110 verify_dirent_name fs/readdir.c:110 [inline] WARNING: CPU: 1 PID: 7921 at fs/readdir.c:110 filldir64+0x4f4/0x5f0 fs/readdir.c:316 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 7921 Comm: syz-executor.0 Not tainted 5.4.0-rc2+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1d8/0x2f8 lib/dump_stack.c:113 panic+0x264/0x7a9 kernel/panic.c:221 __warn+0x20e/0x210 kernel/panic.c:582 report_bug+0x1b6/0x2f0 lib/bug.c:195 fixup_bug arch/x86/kernel/traps.c:179 [inline] do_error_trap+0xd7/0x440 arch/x86/kernel/traps.c:272 do_invalid_op+0x36/0x40 arch/x86/kernel/traps.c:291 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1028 RIP: 0010:verify_dirent_name fs/readdir.c:110 [inline] RIP: 0010:filldir64+0x4f4/0x5f0 fs/readdir.c:316 Code: 1e 48 8b 45 90 42 8a 04 20 84 c0 0f 85 cf 00 00 00 48 8b 45 c0 44 29 38 31 c0 eb 81 e8 b5 2a b9 ff 0f 0b eb 07 e8 ac 2a b9 ff <0f> 0b 49 83 c6 24 4c 89 f0 48 c1 e8 03 42 8a 04 20 84 c0 0f 85 bd RSP: 0018:ffff88805df47b90 EFLAGS: 00010283 RAX: ffffffff81ba0604 RBX: ffff88805df47d30 RCX: 0000000000040000 RDX: ffffc9000614e000 RSI: 00000000000016e4 RDI: 00000000000016e5 RBP: ffff88805df47c10 R08: ffffffff81ba0144 R09: 0000000000000004 R10: fffffbfff1120afb R11: 0000000000000000 R12: dffffc0000000000 R13: 0000000000000004 R14: ffff88805df47e88 R15: 000000000000000c dir_emit include/linux/fs.h:3542 [inline] __fat_readdir+0x1320/0x1a50 fs/fat/dir.c:677 fat_readdir+0x46/0x50 fs/fat/dir.c:704 iterate_dir+0x2a4/0x520 fs/readdir.c:67 ksys_getdents64+0x1ea/0x3f0 fs/readdir.c:372 __do_sys_getdents64 fs/readdir.c:391 [inline] __se_sys_getdents64 fs/readdir.c:388 [inline] __x64_sys_getdents64+0x7a/0x90 fs/readdir.c:388 do_syscall_64+0xf7/0x1c0 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x459a59 Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f3e036f4c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000d9 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459a59 RDX: 0000000000001000 RSI: 00000000200005c0 RDI: 0000000000000008 RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3e036f56d4 R13: 00000000004c0535 R14: 00000000004d2c58 R15: 00000000ffffffff Kernel Offset: disabled Rebooting in 86400 seconds..