EXT4-fs (loop0): Test dummy encryption mode enabled EXT4-fs (loop0): mounted filesystem without journal. Quota mode: writeback. fscrypt: AES-256-CTS-CBC using implementation "cts-cbc-aes-ce" ------------[ cut here ]------------ WARNING: CPU: 0 PID: 4308 at fs/crypto/keyring.c:242 fscrypt_destroy_keyring+0x174/0x244 fs/crypto/keyring.c:242 Modules linked in: CPU: 0 PID: 4308 Comm: syz-executor377 Not tainted 6.1.17-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : fscrypt_destroy_keyring+0x174/0x244 fs/crypto/keyring.c:242 lr : fscrypt_destroy_keyring+0x174/0x244 fs/crypto/keyring.c:242 sp : ffff80001dc97970 x29: ffff80001dc97970 x28: 1ffff00002ae5aa9 x27: dfff800000000000 x26: 0000000000000000 x25: 0000000000000002 x24: 1fffe0001b2df825 x23: dfff800000000000 x22: 0000000000000002 x21: ffff0000d97c0000 x20: ffff0000c26ea000 x19: ffff0000d96fc128 x18: ffff80001dc97320 x17: ffff80001572d000 x16: ffff8000083099b4 x15: ffff8000081c35f8 x14: 1ffff00002ae60b0 x13: dfff800000000000 x12: 0000000000000001 x11: ff80800008bb2ecc x10: 0000000000000000 x9 : ffff800008bb2ecc x8 : ffff0000d90eb680 x7 : ffff800008b5e4fc x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff800008bb2e08 x2 : 0000000000000000 x1 : 0000000000000002 x0 : 0000000000000001 Call trace: fscrypt_destroy_keyring+0x174/0x244 fs/crypto/keyring.c:242 generic_shutdown_super+0xac/0x328 fs/super.c:483 kill_block_super+0x70/0xdc fs/super.c:1441 deactivate_locked_super+0xac/0x124 fs/super.c:332 deactivate_super+0xf0/0x110 fs/super.c:363 cleanup_mnt+0x394/0x41c fs/namespace.c:1186 __cleanup_mnt+0x20/0x30 fs/namespace.c:1193 task_work_run+0x240/0x2f0 kernel/task_work.c:179 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0x554/0x1a88 kernel/exit.c:869 do_group_exit+0x194/0x22c kernel/exit.c:1019 __do_sys_exit_group kernel/exit.c:1030 [inline] __se_sys_exit_group kernel/exit.c:1028 [inline] __wake_up_parent+0x0/0x60 kernel/exit.c:1028 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581 irq event stamp: 15414 hardirqs last enabled at (15413): [] call_rcu+0x614/0xa40 kernel/rcu/tree.c:2833 hardirqs last disabled at (15414): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (15230): [] softirq_handle_end kernel/softirq.c:414 [inline] softirqs last enabled at (15230): [] __do_softirq+0xd88/0xff4 kernel/softirq.c:600 softirqs last disabled at (15223): [] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:79 ---[ end trace 0000000000000000 ]--- Unable to handle kernel paging request at virtual address dfff800000000003 KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f] Mem abort info: ESR = 0x0000000096000006 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x06: level 2 translation fault Data abort info: ISV = 0, ISS = 0x00000006 CM = 0, WnR = 0 [dfff800000000003] address between user and kernel address ranges Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 4308 Comm: syz-executor377 Tainted: G W 6.1.17-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 pstate: 804000c5 (Nzcv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __lock_acquire+0x104/0x764c kernel/locking/lockdep.c:4926 lr : lock_acquire+0x300/0x8e4 kernel/locking/lockdep.c:5669 sp : ffff80001dc97060 x29: ffff80001dc97300 x28: 1ffff00002ae60af x27: ffff800008bb29f0 x26: 0000000000000001 x25: ffff700003b92e30 x24: 0000000000000000 x23: 0000000000000000 x22: 0000000000000000 x21: 0000000000000000 x20: 0000000000000000 x19: 0000000000000018 x18: ffff80001dc97398 x17: ffff80001572d000 x16: ffff80001224ff0c x15: ffff8000081c35f8 x14: 1ffff00002ae60b0 x13: ffff80001dc97180 x12: dfff800000000000 x11: ffff80000830edcc x10: ffff80001573057c x9 : 00000000000000f3 x8 : 0000000000000003 x7 : ffff800008bb29f0 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000018 Call trace: __lock_acquire+0x104/0x764c kernel/locking/lockdep.c:4926 lock_acquire+0x300/0x8e4 kernel/locking/lockdep.c:5669 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x54/0x6c kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:350 [inline] fscrypt_put_master_key_activeref+0xa0/0x408 fs/crypto/keyring.c:96 put_crypt_info+0x1e4/0x29c fs/crypto/keysetup.c:512 fscrypt_put_encryption_info+0x44/0x6c fs/crypto/keysetup.c:709 ext4_clear_inode+0x154/0x174 fs/ext4/super.c:1445 ext4_evict_inode+0x6ec/0x146c fs/ext4/inode.c:346 evict+0x260/0x68c fs/inode.c:664 iput_final fs/inode.c:1747 [inline] iput+0x988/0xa6c fs/inode.c:1773 hook_sb_delete+0x688/0xa10 security/landlock/fs.c:1012 security_sb_delete+0x50/0x94 security/security.c:922 generic_shutdown_super+0xb4/0x328 fs/super.c:484 kill_block_super+0x70/0xdc fs/super.c:1441 deactivate_locked_super+0xac/0x124 fs/super.c:332 deactivate_super+0xf0/0x110 fs/super.c:363 cleanup_mnt+0x394/0x41c fs/namespace.c:1186 __cleanup_mnt+0x20/0x30 fs/namespace.c:1193 task_work_run+0x240/0x2f0 kernel/task_work.c:179 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0x554/0x1a88 kernel/exit.c:869 do_group_exit+0x194/0x22c kernel/exit.c:1019 __do_sys_exit_group kernel/exit.c:1030 [inline] __se_sys_exit_group kernel/exit.c:1028 [inline] __wake_up_parent+0x0/0x60 kernel/exit.c:1028 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581 Code: f006a628 b9436108 34000208 d343fe68 (386c6908) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: f006a628 adrp x8, 0xd4c7000 4: b9436108 ldr w8, [x8, #864] 8: 34000208 cbz w8, 0x48 c: d343fe68 lsr x8, x19, #3 * 10: 386c6908 ldrb w8, [x8, x12] <-- trapping instruction