loop7: detected capacity change from 0 to 256
------------[ cut here ]------------
VFS: brelse: Trying to free free buffer
WARNING: CPU: 1 PID: 12578 at fs/buffer.c:1229 __brelse fs/buffer.c:1229 [inline]
WARNING: CPU: 1 PID: 12578 at fs/buffer.c:1229 brelse include/linux/buffer_head.h:324 [inline]
WARNING: CPU: 1 PID: 12578 at fs/buffer.c:1229 bh_lru_install fs/buffer.c:1346 [inline]
WARNING: CPU: 1 PID: 12578 at fs/buffer.c:1229 __find_get_block+0x109d/0x1150 fs/buffer.c:1400
Modules linked in:
CPU: 1 UID: 0 PID: 12578 Comm: syz.7.1134 Not tainted 6.13.0-rc4-syzkaller #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: 07 40 9a e8 c5 5b dc ff e9 1b f7 ff ff e8 3b f4 75 ff e9 87 f7 ff ff e8 31 f4 75 ff 90 48 c7 c7 20 03 19 8c e8 e4 97 36 ff 90 <0f> 0b 90 90 e9 6b f7 ff ff e8 15 f4 75 ff 48 c7 c7 00 e2 a8 8e 4c
RSP: 0018:ffffc9000baa75e0 EFLAGS: 00010246
RAX: 20d1deae2c4d8900 RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc9000cba1000 RSI: 000000000000e58b RDI: 000000000000e58c
RBP: ffffc9000baa7708 R08: ffffffff81601a82 R09: fffffbfff1cfa210
R10: dffffc0000000000 R11: fffffbfff1cfa210 R12: ffff8880576ccae0
R13: ffff8880b87398b0 R14: ffff888030d5cae0 R15: ffff88804d2b65d0
FS:  00007f9086e2b6c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f907b81f000 CR3: 0000000034a1a000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 bdev_getblk+0x33/0x670 fs/buffer.c:1425
 __breadahead+0x2b/0x240 fs/buffer.c:1440
 sb_breadahead include/linux/buffer_head.h:358 [inline]
 exfat_dir_readahead fs/exfat/dir.c:647 [inline]
 exfat_get_dentry+0x464/0x730 fs/exfat/dir.c:670
 exfat_create_upcase_table+0x242/0xf60 fs/exfat/nls.c:758
 __exfat_fill_super fs/exfat/super.c:628 [inline]
 exfat_fill_super+0x1196/0x2920 fs/exfat/super.c:678
 get_tree_bdev_flags+0x48e/0x5c0 fs/super.c:1636
 vfs_get_tree+0x92/0x2b0 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: 0033:0x7f9085f874ca
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:00007f9086e2ae68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f9086e2aef0 RCX: 00007f9085f874ca
RDX: 0000000020001500 RSI: 0000000020001540 RDI: 00007f9086e2aeb0
RBP: 0000000020001500 R08: 00007f9086e2aef0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000020001540
R13: 00007f9086e2aeb0 R14: 00000000000014fe R15: 0000000020000100
 </TASK>