loop3: detected capacity change from 0 to 2048
------------[ cut here ]------------
VFS: brelse: Trying to free free buffer
WARNING: CPU: 1 PID: 30085 at fs/buffer.c:1145 __brelse fs/buffer.c:1145 [inline]
WARNING: CPU: 1 PID: 30085 at fs/buffer.c:1145 brelse include/linux/buffer_head.h:326 [inline]
WARNING: CPU: 1 PID: 30085 at fs/buffer.c:1145 bh_lru_install fs/buffer.c:1259 [inline]
WARNING: CPU: 1 PID: 30085 at fs/buffer.c:1145 __find_get_block+0xfe9/0x1110 fs/buffer.c:1309
Modules linked in:
CPU: 1 PID: 30085 Comm: syz-executor.3 Not tainted 6.1.0-rc2-syzkaller-00105-gb229b6ca5abb #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022
RIP: 0010:__brelse fs/buffer.c:1145 [inline]
RIP: 0010:brelse include/linux/buffer_head.h:326 [inline]
RIP: 0010:bh_lru_install fs/buffer.c:1259 [inline]
RIP: 0010:__find_get_block+0xfe9/0x1110 fs/buffer.c:1309
Code: 8c ff e8 fa 64 93 ff fb e9 02 f3 ff ff e8 0f b3 8c ff e9 f8 f2 ff ff e8 05 b3 8c ff 48 c7 c7 c0 cc 9d 8a 31 c0 e8 57 51 54 ff <0f> 0b e9 de f2 ff ff 44 89 f9 80 e1 07 38 c1 0f 8c a1 f3 ff ff 4c
RSP: 0018:ffffc900015f74e0 EFLAGS: 00010246
RAX: c4b0fb0575a54100 RBX: 0000000000000000 RCX: 0000000000040000
RDX: ffffc9000cd72000 RSI: 0000000000015701 RDI: 0000000000015702
RBP: ffffc900015f7640 R08: ffffffff816b8dfd R09: fffff520002bee55
R10: fffff520002bee55 R11: 1ffff920002bee54 R12: 1ffff11017366bae
R13: ffff888075f820e8 R14: ffff8880897f4488 R15: ffff8880a4c0b5d0
FS:  00007fbfd4613700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1f1990caa5 CR3: 000000007d2c5000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __getblk_gfp+0x2d/0x290 fs/buffer.c:1329
 sb_getblk include/linux/buffer_head.h:356 [inline]
 __ext4_get_inode_loc+0x3c3/0xdd0 fs/ext4/inode.c:4479
 ext4_get_inode_loc fs/ext4/inode.c:4607 [inline]
 ext4_reserve_inode_write+0x189/0x380 fs/ext4/inode.c:5804
 __ext4_mark_inode_dirty+0x123/0x670 fs/ext4/inode.c:5973
 __ext4_new_inode+0x38f7/0x46f0 fs/ext4/ialloc.c:1333
 ext4_mkdir+0x41a/0xcf0 fs/ext4/namei.c:2984
 vfs_mkdir+0x3b3/0x590 fs/namei.c:4035
 do_mkdirat+0x279/0x550 fs/namei.c:4060
 __do_sys_mkdirat fs/namei.c:4075 [inline]
 __se_sys_mkdirat fs/namei.c:4073 [inline]
 __x64_sys_mkdirat+0x85/0x90 fs/namei.c:4073
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fbfd388a597
Code: 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 02 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fbfd4612f88 EFLAGS: 00000213 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007fbfd388a597
RDX: 00000000000001ff RSI: 0000000020000100 RDI: 00000000ffffff9c
RBP: 00007fbfd38e67b0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000213 R12: 00000000200000c0
R13: 0000000020000100 R14: 00007fbfd4612fe0 R15: 0000000020000e00
 </TASK>
irq event stamp: 0
hardirqs last  enabled at (0): [<0000000000000000>] 0x0
hardirqs last disabled at (0): [<ffffffff814ec043>] copy_process+0x1573/0x4000 kernel/fork.c:2197
softirqs last  enabled at (0): [<ffffffff814ec067>] copy_process+0x1597/0x4000 kernel/fork.c:2198
softirqs last disabled at (0): [<0000000000000000>] 0x0
---[ end trace 0000000000000000 ]---