------------[ cut here ]------------ kernel BUG at fs/bcachefs/btree_cache.c:614! Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP Modules linked in: CPU: 1 UID: 0 PID: 6421 Comm: syz-executor Not tainted 6.12.0-rc7-syzkaller-g887407160d72 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : bch2_fs_btree_cache_exit+0x1238/0x123c fs/bcachefs/btree_cache.c:613 lr : bch2_fs_btree_cache_exit+0x1238/0x123c fs/bcachefs/btree_cache.c:613 sp : ffff8000a3567a20 x29: ffff8000a3567a60 x28: 1fffe0001dc1dc45 x27: ffff0000e8481c80 x26: ffff0000e8481c78 x25: ffff0000ee0ee000 x24: ffff0000e8481cf8 x23: 0000000000000002 x22: ffff0000e8480000 x21: ffff0000e8481c78 x20: 00000000000fffff x19: dfff800000000000 x18: 1fffe000366cb476 x17: ffff80008f80d000 x16: ffff800080355c58 x15: 0000000000000001 x14: 1fffe0001d0903b6 x13: 0000000000000000 x12: 0000000000000000 x11: ffff60001d0903b7 x10: 0000000000ff0100 x9 : 0000000000000000 x8 : ffff0000d4b61e40 x7 : 0000000000000000 x6 : 000000000000003f x5 : 0000000000000040 x4 : 0000000000000001 x3 : ffff8000827c0018 x2 : 0000000000000000 x1 : 0000000000000002 x0 : 0000000000000000 Call trace: bch2_fs_btree_cache_exit+0x1238/0x123c fs/bcachefs/btree_cache.c:613 (P) bch2_fs_btree_cache_exit+0x1238/0x123c fs/bcachefs/btree_cache.c:613 (L) __bch2_fs_free fs/bcachefs/super.c:556 [inline] bch2_fs_release+0x204/0x728 fs/bcachefs/super.c:610 kobject_cleanup lib/kobject.c:689 [inline] kobject_release lib/kobject.c:720 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x2a8/0x41c lib/kobject.c:737 bch2_fs_free+0x2c4/0x334 fs/bcachefs/super.c:672 bch2_kill_sb+0x48/0x58 fs/bcachefs/fs.c:2279 deactivate_locked_super+0xc4/0x12c fs/super.c:473 deactivate_super+0xe0/0x100 fs/super.c:506 cleanup_mnt+0x34c/0x3dc fs/namespace.c:1373 __cleanup_mnt+0x20/0x30 fs/namespace.c:1380 task_work_run+0x230/0x2e0 kernel/task_work.c:239 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] do_notify_resume+0x178/0x1f4 arch/arm64/kernel/entry-common.c:151 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline] el0_svc+0xac/0x168 arch/arm64/kernel/entry-common.c:745 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 Code: d4210000 97771578 d4210000 97771576 (d4210000) ---[ end trace 0000000000000000 ]---