list_del corruption. prev->next should be ffff000127186828, but was ffff800015cfbb40. (prev=ffff800015cfbb40) ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:61! Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 7382 Comm: syz-executor.0 Not tainted 6.1.22-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __list_del_entry_valid+0x13c/0x158 lib/list_debug.c:59 lr : __list_del_entry_valid+0x13c/0x158 lib/list_debug.c:59 sp : ffff80001dc877b0 x29: ffff80001dc877b0 x28: 1fffe000183ea05f x27: 1fffe000183ea055 x26: ffff0000c1f502a8 x25: ffff0000c04d1950 x24: ffff0000c8178828 x23: dfff800000000000 x22: dfff800000000000 x21: ffff800015cfbb40 x20: ffff0000c8178828 x19: ffff000127186828 x18: 1fffe000368b6b76 x17: ffff80001557d000 x16: ffff8000120d9934 x15: ffff0001b45b5bbc x14: 1ffff00002ab00b0 x13: dfff800000000000 x12: 0000000000000001 x11: ff80800008343f10 x10: 0000000000000000 x9 : 5e19032bcaa7f100 x8 : 5e19032bcaa7f100 x7 : ffff80000827b520 x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000001 x3 : ffff80000aa673ec x2 : ffff0001b45b5cd0 x1 : 0000000100000000 x0 : 000000000000006d Call trace: __list_del_entry_valid+0x13c/0x158 lib/list_debug.c:59 __list_del_entry include/linux/list.h:134 [inline] list_del include/linux/list.h:148 [inline] efivar_entry_remove+0x38/0x110 fs/efivarfs/vars.c:488 efivarfs_destroy+0x20/0x3c fs/efivarfs/super.c:183 efivar_entry_iter+0x94/0xdc fs/efivarfs/vars.c:715 efivarfs_kill_sb+0x38/0x48 fs/efivarfs/super.c:244 deactivate_locked_super+0xac/0x124 fs/super.c:332 deactivate_super+0xf0/0x110 fs/super.c:363 put_fs_context+0x88/0x790 fs/fs_context.c:465 fscontext_release+0x64/0x84 fs/fsopen.c:73 __fput+0x30c/0x7bc fs/file_table.c:320 ____fput+0x20/0x30 fs/file_table.c:348 task_work_run+0x240/0x2f0 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x2144/0x3470 arch/arm64/kernel/signal.c:1132 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x9c/0x168 arch/arm64/kernel/entry-common.c:638 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: 91030000 aa1303e1 aa1503e3 95d804bb (d4210000) ---[ end trace 0000000000000000 ]---