------------[ cut here ]------------
VFS: brelse: Trying to free free buffer
WARNING: CPU: 1 PID: 6900 at fs/buffer.c:1229 __brelse fs/buffer.c:1229 [inline]
WARNING: CPU: 1 PID: 6900 at fs/buffer.c:1229 brelse include/linux/buffer_head.h:324 [inline]
WARNING: CPU: 1 PID: 6900 at fs/buffer.c:1229 bh_lru_install fs/buffer.c:1346 [inline]
WARNING: CPU: 1 PID: 6900 at fs/buffer.c:1229 __find_get_block+0xc3c/0xd84 fs/buffer.c:1400
Modules linked in:
CPU: 1 UID: 0 PID: 6900 Comm: syz.3.82 Not tainted 6.13.0-rc3-syzkaller-g573067a5a685 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : __brelse fs/buffer.c:1229 [inline]
pc : brelse include/linux/buffer_head.h:324 [inline]
pc : bh_lru_install fs/buffer.c:1346 [inline]
pc : __find_get_block+0xc3c/0xd84 fs/buffer.c:1400
lr : __brelse fs/buffer.c:1229 [inline]
lr : brelse include/linux/buffer_head.h:324 [inline]
lr : bh_lru_install fs/buffer.c:1346 [inline]
lr : __find_get_block+0xc3c/0xd84 fs/buffer.c:1400
sp : ffff8000a0ae7710
x29: ffff8000a0ae7710 x28: 0000000000000000 x27: dfff800000000000
x26: 0000000000000066 x25: ffff0000f1ac5488 x24: 0000000000000009
x23: ffff0000c15713a0 x22: ffff0000cf26f488 x21: 0000000000000000
x20: ffff0000f1a62970 x19: ffff0000c15752b8 x18: 1fffe00036700a7e
x17: ffff80008f99d000 x16: ffff800080463930 x15: 0000000000000001
x14: 1fffe000367034d0 x13: ffff8000a0ae8000 x12: 0000000000000003
x11: 0000000000000001 x10: 0000000000000003 x9 : 0e33ff6da3f98000
x8 : 0e33ff6da3f98000 x7 : ffff8000803cf9cc x6 : 0000000000000000
x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000000
x2 : 0000000000000006 x1 : ffff80008b746ea0 x0 : ffff800123f1a000
Call trace:
 __brelse fs/buffer.c:1229 [inline] (P)
 brelse include/linux/buffer_head.h:324 [inline] (P)
 bh_lru_install fs/buffer.c:1346 [inline] (P)
 __find_get_block+0xc3c/0xd84 fs/buffer.c:1400 (P)
 bdev_getblk+0x48/0x62c fs/buffer.c:1425
 __getblk include/linux/buffer_head.h:380 [inline]
 sb_getblk include/linux/buffer_head.h:386 [inline]
 fat_zeroed_cluster+0x1c4/0x854 fs/fat/dir.c:1104
 fat_alloc_new_dir+0x708/0xc2c fs/fat/dir.c:1197
 vfat_mkdir+0x148/0x2f0 fs/fat/namei_vfat.c:859
 vfs_mkdir+0x27c/0x410 fs/namei.c:4311
 do_mkdirat+0x248/0x574 fs/namei.c:4334
 __do_sys_mkdirat fs/namei.c:4349 [inline]
 __se_sys_mkdirat fs/namei.c:4347 [inline]
 __arm64_sys_mkdirat+0x8c/0xa4 fs/namei.c:4347
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744
 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600
irq event stamp: 2526
hardirqs last  enabled at (2525): [<ffff8000803cfa6c>] raw_spin_rq_unlock_irq kernel/sched/sched.h:1535 [inline]
hardirqs last  enabled at (2525): [<ffff8000803cfa6c>] finish_lock_switch+0xbc/0x1e4 kernel/sched/core.c:5123
hardirqs last disabled at (2526): [<ffff80008b69c83c>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:488
softirqs last  enabled at (2386): [<ffff80008030e7b4>] softirq_handle_end kernel/softirq.c:407 [inline]
softirqs last  enabled at (2386): [<ffff80008030e7b4>] handle_softirqs+0xb44/0xd34 kernel/softirq.c:589
softirqs last disabled at (2207): [<ffff800080020db4>] __do_softirq+0x14/0x20 kernel/softirq.c:595
---[ end trace 0000000000000000 ]---