------------[ cut here ]------------
VFS: brelse: Trying to free free buffer
WARNING: CPU: 0 PID: 18240 at fs/buffer.c:1229 __brelse fs/buffer.c:1229 [inline]
WARNING: CPU: 0 PID: 18240 at fs/buffer.c:1229 brelse include/linux/buffer_head.h:324 [inline]
WARNING: CPU: 0 PID: 18240 at fs/buffer.c:1229 bh_lru_install fs/buffer.c:1346 [inline]
WARNING: CPU: 0 PID: 18240 at fs/buffer.c:1229 __find_get_block+0x109d/0x1150 fs/buffer.c:1400
Modules linked in:
CPU: 0 UID: 0 PID: 18240 Comm: syz.0.676 Not tainted 6.13.0-rc4-syzkaller-00071-gfd0584d220fe #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:__brelse fs/buffer.c:1229 [inline]
RIP: 0010:brelse include/linux/buffer_head.h:324 [inline]
RIP: 0010:bh_lru_install fs/buffer.c:1346 [inline]
RIP: 0010:__find_get_block+0x109d/0x1150 fs/buffer.c:1400
Code: c7 3c 9a e8 05 60 dc ff e9 1b f7 ff ff e8 6b 83 78 ff e9 87 f7 ff ff e8 61 83 78 ff 90 48 c7 c7 e0 f0 18 8c e8 84 26 39 ff 90 <0f> 0b 90 90 e9 6b f7 ff ff e8 45 83 78 ff 48 c7 c7 c0 c8 a8 8e 4c
RSP: 0018:ffffc9000b8276e0 EFLAGS: 00010246
RAX: 33be961b41f9c800 RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc9000b419000 RSI: 0000000000011817 RDI: 0000000000011818
RBP: ffffc9000b827818 R08: ffffffff816019a2 R09: fffffbfff1cfa210
R10: dffffc0000000000 R11: fffffbfff1cfa210 R12: ffff888053175658
R13: ffff8880b86398b0 R14: ffff88805f92e658 R15: ffff88805fb614e8
FS:  00007f3edfbe86c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055556fef6608 CR3: 00000000217e6000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 bdev_getblk+0x33/0x670 fs/buffer.c:1425
 __bread_gfp+0x86/0x400 fs/buffer.c:1485
 sb_bread include/linux/buffer_head.h:346 [inline]
 exfat_load_upcase_table fs/exfat/nls.c:671 [inline]
 exfat_create_upcase_table+0x8d3/0xf60 fs/exfat/nls.c:778
 __exfat_fill_super fs/exfat/super.c:628 [inline]
 exfat_fill_super+0x1196/0x2920 fs/exfat/super.c:678
 get_tree_bdev_flags+0x48c/0x5c0 fs/super.c:1636
 vfs_get_tree+0x90/0x2b0 fs/super.c:1814
 do_new_mount+0x2be/0xb40 fs/namespace.c:3507
 do_mount fs/namespace.c:3847 [inline]
 __do_sys_mount fs/namespace.c:4057 [inline]
 __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4034
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3eded874ca
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f3edfbe7e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f3edfbe7ef0 RCX: 00007f3eded874ca
RDX: 00000000200009c0 RSI: 0000000020000000 RDI: 00007f3edfbe7eb0
RBP: 00000000200009c0 R08: 00007f3edfbe7ef0 R09: 0000000000800800
R10: 0000000000800800 R11: 0000000000000246 R12: 0000000020000000
R13: 00007f3edfbe7eb0 R14: 000000000000152b R15: 0000000020000040
 </TASK>