------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(1) WARNING: CPU: 1 PID: 7583 at kernel/locking/lockdep.c:232 check_wait_context kernel/locking/lockdep.c:4850 [inline] WARNING: CPU: 1 PID: 7583 at kernel/locking/lockdep.c:232 __lock_acquire+0x7b0/0x7904 kernel/locking/lockdep.c:5176 Modules linked in: CPU: 1 UID: 0 PID: 7583 Comm: syz.1.231 Not tainted 6.13.0-rc2-syzkaller-g2e7aff49b5da #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 pstate: 604000c5 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : check_wait_context kernel/locking/lockdep.c:4850 [inline] pc : __lock_acquire+0x7b0/0x7904 kernel/locking/lockdep.c:5176 lr : hlock_class kernel/locking/lockdep.c:232 [inline] lr : check_wait_context kernel/locking/lockdep.c:4850 [inline] lr : __lock_acquire+0x7a4/0x7904 kernel/locking/lockdep.c:5176 sp : ffff80009cb86e60 x29: ffff80009cb87120 x28: ffff0000cd595ac0 x27: ffff0000cd596560 x26: 1fffe00019ab2cac x25: 0000000000000000 x24: 0000000000000001 x23: ffff0000cd596538 x22: ffff0000cd596540 x21: ffff0000cd596564 x20: 00000000000011b0 x19: ffff80009319a9f0 x18: 0000000000000008 x17: 0000000000000000 x16: ffff80008326d65c x15: 0000000000000001 x14: 1fffe000366c5eea x13: dfff800000000000 x12: 0000000000000000 x11: 0000000000080000 x10: 000000000007ffff x9 : 86c26eaf32791b00 x8 : 0000000000000000 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80009cb86598 x4 : ffff80008fa6f860 x3 : ffff80008073b194 x2 : 0000000000000001 x1 : 0000000100000001 x0 : 0000000000000000 Call trace: check_wait_context kernel/locking/lockdep.c:4850 [inline] (P) __lock_acquire+0x7b0/0x7904 kernel/locking/lockdep.c:5176 (P) hlock_class kernel/locking/lockdep.c:232 [inline] (L) check_wait_context kernel/locking/lockdep.c:4850 [inline] (L) __lock_acquire+0x7a4/0x7904 kernel/locking/lockdep.c:5176 (L) lock_acquire+0x23c/0x724 kernel/locking/lockdep.c:5849 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:119 [inline] _raw_spin_lock_irq+0x58/0x70 kernel/locking/spinlock.c:170 spin_lock_irq include/linux/spinlock.h:376 [inline] rcu_pending_has_pending_or_armed fs/bcachefs/rcu_pending.c:576 [inline] rcu_pending_exit+0x124/0x660 fs/bcachefs/rcu_pending.c:594 bch2_fs_btree_key_cache_exit+0x7ec/0x8f4 fs/bcachefs/btree_key_cache.c:742 __bch2_fs_free fs/bcachefs/super.c:556 [inline] bch2_fs_release+0x1fc/0x728 fs/bcachefs/super.c:611 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:673 bch2_fs_stop+0x28/0x38 fs/bcachefs/super.c:679 bch2_fs_get_tree+0xab0/0x1030 fs/bcachefs/fs.c:2265 vfs_get_tree+0x90/0x28c fs/super.c:1814 do_new_mount+0x278/0x900 fs/namespace.c:3507 path_mount+0x590/0xe04 fs/namespace.c:3834 do_mount fs/namespace.c:3847 [inline] __do_sys_mount fs/namespace.c:4057 [inline] __se_sys_mount fs/namespace.c:4034 [inline] __arm64_sys_mount+0x4d4/0x5ac fs/namespace.c:4034 __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+0x54/0x168 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 irq event stamp: 85550 hardirqs last enabled at (85549): [<ffff80008b6a9c9c>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (85549): [<ffff80008b6a9c9c>] _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:194 hardirqs last disabled at (85550): [<ffff80008b6a9b44>] __raw_spin_lock_irq include/linux/spinlock_api_smp.h:117 [inline] hardirqs last disabled at (85550): [<ffff80008b6a9b44>] _raw_spin_lock_irq+0x28/0x70 kernel/locking/spinlock.c:170 softirqs last enabled at (85050): [<ffff80008030d534>] softirq_handle_end kernel/softirq.c:400 [inline] softirqs last enabled at (85050): [<ffff80008030d534>] handle_softirqs+0xb44/0xd34 kernel/softirq.c:582 softirqs last disabled at (84927): [<ffff800080020db4>] __do_softirq+0x14/0x20 kernel/softirq.c:588 ---[ end trace 0000000000000000 ]--- Unable to handle kernel paging request at virtual address dfff800000000018 KASAN: null-ptr-deref in range [0x00000000000000c0-0x00000000000000c7] Mem abort info: ESR = 0x0000000096000005 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x05: level 1 translation fault Data abort info: ISV = 0, ISS = 0x00000005, ISS2 = 0x00000000 CM = 0, WnR = 0, TnD = 0, TagAccess = 0 GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 [dfff800000000018] address between user and kernel address ranges Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP Modules linked in: CPU: 1 UID: 0 PID: 7583 Comm: syz.1.231 Tainted: G W 6.13.0-rc2-syzkaller-g2e7aff49b5da #0 Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 pstate: 604000c5 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : check_wait_context kernel/locking/lockdep.c:4850 [inline] pc : __lock_acquire+0x574/0x7904 kernel/locking/lockdep.c:5176 lr : hlock_class kernel/locking/lockdep.c:232 [inline] lr : check_wait_context kernel/locking/lockdep.c:4850 [inline] lr : __lock_acquire+0x7a4/0x7904 kernel/locking/lockdep.c:5176 sp : ffff80009cb86e60 x29: ffff80009cb87120 x28: ffff0000cd595ac0 x27: ffff0000cd596560 x26: 1fffe00019ab2cac x25: 0000000000000000 x24: 0000000000000001 x23: ffff0000cd596538 x22: ffff0000cd596540 x21: 00000000000000c4 x20: 00000000000011b0 x19: ffff80009319a9f0 x18: 0000000000000008 x17: 0000000000000000 x16: ffff80008326d65c x15: 0000000000000001 x14: 1fffe000366c5eea x13: dfff800000000000 x12: 0000000000000000 x11: 0000000000080000 x10: 000000000007ffff x9 : 86c26eaf32791b00 x8 : 0000000000000018 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80009cb86598 x4 : ffff80008fa6f860 x3 : ffff80008073b194 x2 : 0000000000000001 x1 : 0000000100000001 x0 : 0000000000000000 Call trace: check_wait_context kernel/locking/lockdep.c:4850 [inline] (P) __lock_acquire+0x574/0x7904 kernel/locking/lockdep.c:5176 (P) hlock_class kernel/locking/lockdep.c:232 [inline] (L) check_wait_context kernel/locking/lockdep.c:4850 [inline] (L) __lock_acquire+0x7a4/0x7904 kernel/locking/lockdep.c:5176 (L) lock_acquire+0x23c/0x724 kernel/locking/lockdep.c:5849 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:119 [inline] _raw_spin_lock_irq+0x58/0x70 kernel/locking/spinlock.c:170 spin_lock_irq include/linux/spinlock.h:376 [inline] rcu_pending_has_pending_or_armed fs/bcachefs/rcu_pending.c:576 [inline] rcu_pending_exit+0x124/0x660 fs/bcachefs/rcu_pending.c:594 bch2_fs_btree_key_cache_exit+0x7ec/0x8f4 fs/bcachefs/btree_key_cache.c:742 __bch2_fs_free fs/bcachefs/super.c:556 [inline] bch2_fs_release+0x1fc/0x728 fs/bcachefs/super.c:611 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:673 bch2_fs_stop+0x28/0x38 fs/bcachefs/super.c:679 bch2_fs_get_tree+0xab0/0x1030 fs/bcachefs/fs.c:2265 vfs_get_tree+0x90/0x28c fs/super.c:1814 do_new_mount+0x278/0x900 fs/namespace.c:3507 path_mount+0x590/0xe04 fs/namespace.c:3834 do_mount fs/namespace.c:3847 [inline] __do_sys_mount fs/namespace.c:4057 [inline] __se_sys_mount fs/namespace.c:4034 [inline] __arm64_sys_mount+0x4d4/0x5ac fs/namespace.c:4034 __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+0x54/0x168 arch/arm64/kernel/entry-common.c:744 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: 34000fa8 aa1f03e8 91031115 d343fea8 (38ed6908) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 34000fa8 cbz w8, 0x1f4 4: aa1f03e8 mov x8, xzr 8: 91031115 add x21, x8, #0xc4 c: d343fea8 lsr x8, x21, #3 * 10: 38ed6908 ldrsb w8, [x8, x13] <-- trapping instruction