BTRFS info (device loop3): last unmount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf Unable to handle kernel paging request at virtual address dfff80003fffe003 KASAN: probably user-memory-access in range [0x00000001ffff0018-0x00000001ffff001f] 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 [dfff80003fffe003] address between user and kernel address ranges Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP Modules linked in: CPU: 0 UID: 0 PID: 6436 Comm: syz-executor Not tainted 6.12.0-syzkaller-g7b1d1d4cfac0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 pstate: 804000c5 (Nzcv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __lock_acquire+0xfc/0x77c8 kernel/locking/lockdep.c:5065 lr : lock_acquire+0x240/0x728 kernel/locking/lockdep.c:5825 sp : ffff80009baa7440 x29: ffff80009baa7700 x28: ffff80008025d2e8 x27: 0000000000000000 x26: ffff0001b361c4c0 x25: 0000000000000000 x24: 0000000000000001 x23: 0000000000000000 x22: 1ffff00011f1a0bc x21: 00000001ffff0018 x20: 0000000000000001 x19: 0000000000000000 x18: 1fffe000366c3876 x17: ffff80008f8cd000 x16: ffff8000831615b0 x15: 0000000000000001 x14: ffff80008f8d05e8 x13: dfff800000000000 x12: ffff700013754eb0 x11: ffff800080359554 x10: ffff80008f8d05e4 x9 : 00000000000000f3 x8 : 000000003fffe003 x7 : ffff80008025d2e8 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000000 x1 : 0000000000000000 x0 : 00000001ffff0018 Call trace: __lock_acquire+0xfc/0x77c8 kernel/locking/lockdep.c:5065 (P) lock_acquire+0x240/0x728 kernel/locking/lockdep.c:5825 (L) lock_acquire+0x240/0x728 kernel/locking/lockdep.c:5825 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:119 [inline] _raw_spin_lock_irq+0x58/0x70 kernel/locking/spinlock.c:170 put_pwq_unlocked kernel/workqueue.c:1662 [inline] destroy_workqueue+0x8d8/0xdc0 kernel/workqueue.c:5883 btrfs_destroy_workqueue+0x48/0x308 fs/btrfs/async-thread.c:360 btrfs_stop_all_workers+0x1c0/0x240 fs/btrfs/disk-io.c:1793 close_ctree+0x598/0xb3c fs/btrfs/disk-io.c:4362 btrfs_put_super+0x70/0x80 fs/btrfs/super.c:75 generic_shutdown_super+0x12c/0x2bc fs/super.c:642 kill_anon_super+0x4c/0x7c fs/super.c:1237 btrfs_kill_super+0x40/0x58 fs/btrfs/super.c:2114 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: f007aba8 b945e508 34008c88 d343fea8 (386d6908) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: f007aba8 adrp x8, 0xf577000 4: b945e508 ldr w8, [x8, #1508] 8: 34008c88 cbz w8, 0x1198 c: d343fea8 lsr x8, x21, #3 * 10: 386d6908 ldrb w8, [x8, x13] <-- trapping instruction