syzbot

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WARNING: CPU: 0 PID: 17024 at kernel/rcu/srcutree.c:653 cleanup_srcu_struct+0x40b/0x4e0 kernel/rcu/srcutree.c:653
Modules linked in:
CPU: 0 PID: 17024 Comm: syz-executor.3 Not tainted 6.9.0-syzkaller-09699-geb6a9339efeb #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:cleanup_srcu_struct+0x40b/0x4e0 kernel/rcu/srcutree.c:653
Code: e3 7c 00 48 c7 03 00 00 00 00 48 83 c4 50 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc 90 0f 0b 90 eb e7 90 0f 0b 90 eb e1 90 <0f> 0b 90 eb db 90 0f 0b 90 eb 0a 90 0f 0b 90 eb 04 90 0f 0b 90 48
RSP: 0000:ffffc900049f7bd0 EFLAGS: 00010202
RAX: 0000000000000001 RBX: 0000000000000001 RCX: 0000000000000002
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffe8ffffd41a18
RBP: 0000000000000002 R08: ffffe8ffffd41a1f R09: 1ffffd1ffffa8343
R10: dffffc0000000000 R11: fffff91ffffa8344 R12: dffffc0000000000
R13: ffff88804ed842c0 R14: ffff88801e39c198 R15: ffff88801e39c000
FS:  0000555572be7480(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe1fa68e000 CR3: 000000007bde8000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 bch2_fs_btree_iter_exit+0x47c/0x510 fs/bcachefs/btree_iter.c:3408
 __bch2_fs_free fs/bcachefs/super.c:554 [inline]
 bch2_fs_release+0x1c9/0x6e0 fs/bcachefs/super.c:603
 kobject_cleanup lib/kobject.c:689 [inline]
 kobject_release lib/kobject.c:720 [inline]
 kref_put include/linux/kref.h:65 [inline]
 kobject_put+0x22f/0x480 lib/kobject.c:737
 deactivate_locked_super+0xc4/0x130 fs/super.c:472
 cleanup_mnt+0x426/0x4c0 fs/namespace.c:1267
 task_work_run+0x24f/0x310 kernel/task_work.c:180
 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+0x168/0x370 kernel/entry/common.c:218
 do_syscall_64+0x102/0x240 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff651c7e217
Code: b0 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 b0 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffde6990fc8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007ff651c7e217
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffde6991080
RBP: 00007ffde6991080 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffde6992140
R13: 00007ff651cc8336 R14: 00000000000ba24b R15: 0000000000000003
 </TASK>