Bad inode number on dev loop0: 2 is out of range SysV FS: get root inode failed oldfs: cannot read superblock ------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 0 PID: 14059 at fs/buffer.c:1235 __brelse fs/buffer.c:1235 [inline] WARNING: CPU: 0 PID: 14059 at fs/buffer.c:1235 __brelse+0x6d/0xb0 fs/buffer.c:1229 Modules linked in: CPU: 0 UID: 0 PID: 14059 Comm: syz.0.2366 Not tainted 6.12.0-rc6-syzkaller-00077-g2e1b3cc9d7f7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:__brelse fs/buffer.c:1235 [inline] RIP: 0010:__brelse+0x6d/0xb0 fs/buffer.c:1229 Code: 84 d2 75 52 44 8b 63 60 31 ff 44 89 e6 e8 fb 18 7b ff 45 85 e4 75 20 e8 b1 16 7b ff 90 48 c7 c7 60 e8 7e 8b e8 44 09 3c ff 90 <0f> 0b 90 90 5b 5d 41 5c e9 96 16 7b ff e8 91 16 7b ff be 04 00 00 RSP: 0018:ffffc9000332fbf8 EFLAGS: 00010086 RAX: 0000000000000000 RBX: ffff88805c637d98 RCX: ffffc9000c0a1000 RDX: 0000000000040000 RSI: ffffffff814e6e86 RDI: 0000000000000001 RBP: ffff88805c637df8 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffff88805c637d98 R14: dffffc0000000000 R15: ffff8880b8640100 FS: 00007fd0b376a6c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe336fe9991 CR3: 0000000063c88000 CR4: 0000000000350ef0 Call Trace: brelse include/linux/buffer_head.h:324 [inline] __invalidate_bh_lrus fs/buffer.c:1504 [inline] invalidate_bh_lru+0xa2/0x190 fs/buffer.c:1517 csd_do_func kernel/smp.c:134 [inline] smp_call_function_many_cond+0xf2a/0x1300 kernel/smp.c:875 on_each_cpu_cond_mask+0x40/0x90 kernel/smp.c:1051 kill_bdev block/bdev.c:90 [inline] blkdev_flush_mapping+0xf1/0x290 block/bdev.c:671 blkdev_put_whole+0xc4/0xf0 block/bdev.c:678 bdev_release+0x47e/0x6d0 block/bdev.c:1103 blkdev_release+0x15/0x20 block/fops.c:639 __fput+0x3f9/0xb60 fs/file_table.c:431 task_work_run+0x151/0x250 kernel/task_work.c:239 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x27b/0x2a0 kernel/entry/common.c:218 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fd0b297feba 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:00007fd0b3769e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffea RBX: 00007fd0b3769ef0 RCX: 00007fd0b297feba RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fd0b3769eb0 RBP: 0000000020000000 R08: 00007fd0b3769ef0 R09: 0000000002000412 R10: 0000000002000412 R11: 0000000000000246 R12: 0000000020000100 R13: 00007fd0b3769eb0 R14: 0000000000009eb5 R15: 0000000020000040