------------[ cut here ]------------ WARNING: CPU: 1 PID: 9000 at kernel/rcu/srcutree.c:1325 __srcu_read_unlock kernel/rcu/srcutree.c:-1 [inline] WARNING: CPU: 1 PID: 9000 at kernel/rcu/srcutree.c:1325 __srcu_read_unlock_nmisafe include/linux/srcu.h:119 [inline] WARNING: CPU: 1 PID: 9000 at kernel/rcu/srcutree.c:1325 srcu_gp_start_if_needed+0xeac/0x10d0 kernel/rcu/srcutree.c:1347 Modules linked in: CPU: 1 UID: 0 PID: 9000 Comm: syz.1.424 Not tainted 6.16.0-rc7-syzkaller-g82af5ea7c611 #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 pstate: 804000c5 (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:1325 sp : ffff80009d5b7330 x29: ffff80009d5b73c0 x28: fffffdffbf6e5c80 x27: 0000000000000000 x26: dfff800000000000 x25: fffffffffffffe77 x24: ffff0000d8e3db88 x23: ffff0000d34f5980 x22: 0000000000000000 x21: fffffffffffffe74 x20: ffff0001156043c0 x19: fffffdffbf6e5c40 x18: 1fffe000337d6476 x17: ffff80008f67e000 x16: ffff80008af01d78 x15: ffff700013ab6e50 x14: 1ffff00013ab6e50 x13: 0000000000000004 x12: ffffffffffffffff x11: 0000000000080000 x10: 0000000000000003 x9 : 0000000000000000 x8 : 0000000000000000 x7 : ffff8000805a4890 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : ffff80008afd4e80 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:1347 (P) __call_srcu kernel/rcu/srcutree.c:1389 [inline] __synchronize_srcu+0x2b8/0x348 kernel/rcu/srcutree.c:1441 synchronize_srcu_expedited+0x24/0x34 kernel/rcu/srcutree.c:1467 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_fs_stop+0x28/0x38 fs/bcachefs/super.c:740 bch2_fs_get_tree+0xc2c/0x107c fs/bcachefs/fs.c:2604 vfs_get_tree+0x90/0x28c fs/super.c:1804 do_new_mount+0x228/0x814 fs/namespace.c:3902 path_mount+0x5b4/0xde0 fs/namespace.c:4226 do_mount fs/namespace.c:4239 [inline] __do_sys_mount fs/namespace.c:4450 [inline] __se_sys_mount fs/namespace.c:4427 [inline] __arm64_sys_mount+0x3e8/0x468 fs/namespace.c:4427 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x180 arch/arm64/kernel/entry-common.c:879 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 irq event stamp: 104860 hardirqs last enabled at (104859): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (104859): [] _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:194 hardirqs last disabled at (104860): [] spin_lock_irqsave_sdp_contention kernel/rcu/srcutree.c:375 [inline] hardirqs last disabled at (104860): [] srcu_gp_start_if_needed+0x2b0/0x10d0 kernel/rcu/srcutree.c:1275 softirqs last enabled at (97350): [] softirq_handle_end kernel/softirq.c:425 [inline] softirqs last enabled at (97350): [] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:607 softirqs last disabled at (97335): [] __do_softirq+0x14/0x20 kernel/softirq.c:613 ---[ end trace 0000000000000000 ]---