------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 0 PID: 1140 at fs/buffer.c:1148 __brelse fs/buffer.c:1148 [inline] WARNING: CPU: 0 PID: 1140 at fs/buffer.c:1148 brelse include/linux/buffer_head.h:325 [inline] WARNING: CPU: 0 PID: 1140 at fs/buffer.c:1148 bh_lru_install fs/buffer.c:1262 [inline] WARNING: CPU: 0 PID: 1140 at fs/buffer.c:1148 __find_get_block+0x110e/0x1350 fs/buffer.c:1312 Modules linked in: CPU: 0 PID: 1140 Comm: kworker/u4:3 Not tainted 5.15.160-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 Workqueue: writeback wb_workfn (flush-7:0) RIP: 0010:__brelse fs/buffer.c:1148 [inline] RIP: 0010:brelse include/linux/buffer_head.h:325 [inline] RIP: 0010:bh_lru_install fs/buffer.c:1262 [inline] RIP: 0010:__find_get_block+0x110e/0x1350 fs/buffer.c:1312 Code: 58 d0 9a ff e8 53 50 a1 ff fb e9 e4 f1 ff ff e8 48 d0 9a ff e9 da f1 ff ff e8 3e d0 9a ff 48 c7 c7 a0 6b 97 8a e8 82 78 66 ff <0f> 0b e9 c2 f1 ff ff 44 89 f1 80 e1 07 38 c1 0f 8c 86 f2 ff ff 4c RSP: 0018:ffffc90004cbf200 EFLAGS: 00010246 RAX: 03515a2cc8f31900 RBX: 0000000000000000 RCX: ffff88801d288000 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffffc90004cbf350 R08: ffffffff8166860c R09: fffff52000997d81 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88805ff11828 R13: 1ffff11017346cbe R14: ffff888073729e80 R15: ffff8880735ce5d0 FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020008000 CR3: 000000007b119000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __getblk_gfp+0x2d/0xaf0 fs/buffer.c:1332 udf_update_inode+0xf7/0x2c20 fs/udf/inode.c:1687 write_inode fs/fs-writeback.c:1495 [inline] __writeback_single_inode+0x644/0xe30 fs/fs-writeback.c:1705 writeback_sb_inodes+0xbce/0x1a40 fs/fs-writeback.c:1930