------------[ cut here ]------------
------------[ cut here ]------------
VFS: brelse: Trying to free free buffer
WARNING: CPU: 0 PID: 8129 at fs/buffer.c:1144 __brelse fs/buffer.c:1144 [inline]
WARNING: CPU: 0 PID: 8129 at fs/buffer.c:1144 __brelse+0x67/0xa0 fs/buffer.c:1138
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 8129 Comm: syz-executor.5 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 panic+0x26a/0x50e kernel/panic.c:186
 __warn.cold+0x20/0x5a kernel/panic.c:541
 report_bug+0x262/0x2b0 lib/bug.c:183
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 fixup_bug arch/x86/kernel/traps.c:173 [inline]
 do_error_trap+0x1d7/0x310 arch/x86/kernel/traps.c:296
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1038
RIP: 0010:__brelse fs/buffer.c:1144 [inline]
RIP: 0010:__brelse+0x67/0xa0 fs/buffer.c:1138
Code: 7c 04 84 d2 75 4e 44 8b 63 60 31 ff 44 89 e6 e8 bf 16 b2 ff 45 85 e4 75 1c e8 45 15 b2 ff 48 c7 c7 e0 1c 75 88 e8 1e 4d 42 06 <0f> 0b 5b 5d 41 5c e9 2e 15 b2 ff e8 29 15 b2 ff be 04 00 00 00 48
RSP: 0018:ffff88809f507748 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffff888043a6f5e8 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed1013ea0edb
RBP: ffff888043a6f648 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8880ba128860 R14: ffff8880b1b28b28 R15: ffff8880ba1287e0
 brelse include/linux/buffer_head.h:297 [inline]
 bh_lru_install fs/buffer.c:1247 [inline]
 __find_get_block+0xa28/0xde0 fs/buffer.c:1297
 __getblk_gfp+0x28/0x70 fs/buffer.c:1317
 sb_getblk include/linux/buffer_head.h:333 [inline]
 ext4_getblk+0x162/0x4f0 fs/ext4/inode.c:1000
 ext4_bread+0x7c/0x210 fs/ext4/inode.c:1043
 __ext4_read_dirblock+0x34/0x9d0 fs/ext4/namei.c:111
 htree_dirblock_to_tree+0xaa/0x5e0 fs/ext4/namei.c:995
 ext4_htree_fill_tree+0x239/0xb60 fs/ext4/namei.c:1114
 ext4_dx_readdir fs/ext4/dir.c:582 [inline]
 ext4_readdir+0x14c3/0x2dc0 fs/ext4/dir.c:125
 iterate_dir+0x473/0x5c0 fs/readdir.c:51
 ksys_getdents64+0x175/0x2b0 fs/readdir.c:357
 __do_sys_getdents64 fs/readdir.c:376 [inline]
 __se_sys_getdents64 fs/readdir.c:373 [inline]
 __x64_sys_getdents64+0x6f/0xb0 fs/readdir.c:373
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f2cf9d92f07
Code: 00 00 0f 05 eb b9 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 81 fa ff ff ff 7f b8 ff ff ff 7f 48 0f 47 d0 b8 d9 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 48
RSP: 002b:00007ffe98537fc8 EFLAGS: 00000293 ORIG_RAX: 00000000000000d9
RAX: ffffffffffffffda RBX: 00005555563f3810 RCX: 00007f2cf9d92f07
RDX: 0000000000008000 RSI: 00005555563f3840 RDI: 0000000000000003
RBP: 00005555563f3840 R08: 0000000000000030 R09: 00007f2cf9e6a640
R10: 0000000000000231 R11: 0000000000000293 R12: ffffffffffffffb8
R13: 00005555563f3814 R14: 0000000000000016 R15: 00007ffe985391c0
Kernel Offset: disabled
Rebooting in 86400 seconds..