------------[ cut here ]------------ WARNING: CPU: 1 PID: 7050 at kernel/rcu/srcutree.c:1327 __srcu_read_unlock kernel/rcu/srcutree.c:-1 [inline] WARNING: CPU: 1 PID: 7050 at kernel/rcu/srcutree.c:1327 __srcu_read_unlock_nmisafe include/linux/srcu.h:119 [inline] WARNING: CPU: 1 PID: 7050 at kernel/rcu/srcutree.c:1327 srcu_gp_start_if_needed+0xeac/0x10d0 kernel/rcu/srcutree.c:1349 Modules linked in: CPU: 1 UID: 0 PID: 7050 Comm: syz-executor Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 834000c5 (Nzcv daIF +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : srcu_gp_start_if_needed+0xeac/0x10d0 kernel/rcu/srcutree.c:-1 lr : srcu_gp_start_if_needed+0x574/0x10d0 kernel/rcu/srcutree.c:1327 sp : ffff8000a50277b0 x29: ffff8000a5027840 x28: fffffdffbf7738c0 x27: 0000000000000000 x26: dfff800000000000 x25: fffffffffffffe77 x24: ffff0000d3921e88 x23: ffff0000d8889980 x22: 0000000000000000 x21: fffffffffffffe74 x20: ffff0000fbf043c0 x19: fffffdffbf773880 x18: 1fffe00033799a88 x17: ffff80008f7de000 x16: ffff80008b01d7f0 x15: ffff700014a04ee0 x14: 1ffff00014a04ee0 x13: 0000000000000004 x12: ffffffffffffffff x11: 0000000056067a95 x10: 0000000000000003 x9 : 0000000000000000 x8 : 0000000000000000 x7 : ffff8000805b1758 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : ffff80008b0e72e0 x2 : 0000000000000008 x1 : fffffffffffffe74 x0 : 0000000000000000 Call trace: __srcu_read_unlock kernel/rcu/srcutree.c:-1 [inline] (P) __srcu_read_unlock_nmisafe include/linux/srcu.h:119 [inline] (P) srcu_gp_start_if_needed+0xeac/0x10d0 kernel/rcu/srcutree.c:1349 (P) __call_srcu kernel/rcu/srcutree.c:1391 [inline] __synchronize_srcu+0x2b8/0x348 kernel/rcu/srcutree.c:1443 synchronize_srcu_expedited+0x24/0x34 kernel/rcu/srcutree.c:1469 bch2_fs_btree_iter_exit+0x378/0x420 fs/bcachefs/btree_iter.c:3750 __bch2_fs_free fs/bcachefs/super.c:617 [inline] bch2_fs_release+0x2b4/0x770 fs/bcachefs/super.c:667 kobject_cleanup lib/kobject.c:689 [inline] kobject_release lib/kobject.c:720 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x2b0/0x438 lib/kobject.c:737 bch2_fs_free+0x46c/0x4e0 fs/bcachefs/super.c:734 bch2_kill_sb+0x48/0x58 fs/bcachefs/fs.c:2619 deactivate_locked_super+0xc4/0x12c fs/super.c:474 deactivate_super+0xe0/0x100 fs/super.c:507 cleanup_mnt+0x31c/0x3ac fs/namespace.c:1375 __cleanup_mnt+0x20/0x30 fs/namespace.c:1382 task_work_run+0x1dc/0x260 kernel/task_work.c:227 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop+0xfc/0x168 kernel/entry/common.c:43 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline] arm64_exit_to_user_mode arch/arm64/kernel/entry-common.c:103 [inline] el0_svc+0x170/0x254 arch/arm64/kernel/entry-common.c:745 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:763 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 irq event stamp: 6722138 hardirqs last enabled at (6722137): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (6722137): [] _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:194 hardirqs last disabled at (6722138): [] spin_lock_irqsave_sdp_contention kernel/rcu/srcutree.c:375 [inline] hardirqs last disabled at (6722138): [] srcu_gp_start_if_needed+0x2b0/0x10d0 kernel/rcu/srcutree.c:1277 softirqs last enabled at (6715674): [] softirq_handle_end kernel/softirq.c:425 [inline] softirqs last enabled at (6715674): [] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:607 softirqs last disabled at (6715639): [] __do_softirq+0x14/0x20 kernel/softirq.c:613 ---[ end trace 0000000000000000 ]---