list_del corruption. prev->next should be ffff0000dcc82828, but was ffff80001503f520 ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:61! Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 6423 Comm: syz-executor.3 Not tainted 5.15.143-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __list_del_entry_valid+0x138/0x150 lib/list_debug.c:59 lr : __list_del_entry_valid+0x138/0x150 lib/list_debug.c:59 sp : ffff800021c878b0 x29: ffff800021c878b0 x28: 1ffff00002923a9d x27: 0000000000000000 x26: dfff800000000000 x25: ffff0000dcc84828 x24: ffff80001491d320 x23: dfff800000000000 x22: ffff0000dcc84828 x21: dfff800000000000 x20: ffff80001503f520 x19: ffff0000dcc82828 x18: 1fffe0003690278e x17: 1fffe0003690278e x16: ffff80001197af0c x15: ffff8000149bed20 x14: 1ffff0000292406a x13: dfff800000000000 x12: 0000000000000001 x11: 0000000000000000 x10: 0000000000000000 x9 : 03757901ec6a8f00 x8 : 03757901ec6a8f00 x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000000 x3 : ffff80000a95e720 x2 : ffff0001b4813d10 x1 : 0000000100000000 x0 : 0000000000000054 Call trace: __list_del_entry_valid+0x138/0x150 lib/list_debug.c:59 __list_del_entry include/linux/list.h:132 [inline] list_del include/linux/list.h:146 [inline] efivar_entry_remove+0x64/0x14c drivers/firmware/efi/vars.c:539 efivarfs_destroy+0x20/0x5c fs/efivarfs/super.c:185 __efivar_entry_iter+0x11c/0x19c drivers/firmware/efi/vars.c:1089 efivarfs_kill_sb+0x3c/0x4c fs/efivarfs/super.c:249 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0x108/0x128 fs/super.c:366 cleanup_mnt+0x3c0/0x474 fs/namespace.c:1143 __cleanup_mnt+0x20/0x30 fs/namespace.c:1150 task_work_run+0x130/0x1e4 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x262c/0x32b8 arch/arm64/kernel/signal.c:946 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xfc/0x1f0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 Code: f003ae00 91228000 aa1303e1 95bee00f (d4210000) ---[ end trace 9277ef76d5f4a051 ]---