list_del corruption. prev->next should be ffff0000c7efe828, but was ffff800014fee6e0 ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:61! Internal error: Oops - BUG: 0 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 11400 Comm: syz-executor.0 Not tainted 5.15.107-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+0x138/0x150 lib/list_debug.c:59 lr : __list_del_entry_valid+0x138/0x150 lib/list_debug.c:59 sp : ffff800025987590 x29: ffff800025987590 x28: 1fffe0001eec36e0 x27: 0000000000000000 x26: dfff800000000000 x25: ffff800014fee6e0 x24: 1fffe0001e599116 x23: dfff800000000000 x22: ffff800014fee6e0 x21: dfff800000000000 x20: ffff800014fee6e0 x19: ffff0000c7efe828 x18: 0000000000000001 x17: ff80800008333ebc x16: ffff800011943d44 x15: ffff800008333ebc x14: 00000000ffffffff x13: ffffffffffffffff x12: 0000000000000000 x11: ff8080000832b964 x10: 0000000000000000 x9 : 34549d958be68100 x8 : 34549d958be68100 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff800025986cf8 x4 : ffff8000149af940 x3 : ffff80000a94f720 x2 : ffff0001b47fed10 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 put_fs_context+0x88/0x7e4 fs/fs_context.c:465 fscontext_release+0x64/0x84 fs/fsopen.c:73 __fput+0x30c/0x7f0 fs/file_table.c:280 ____fput+0x20/0x30 fs/file_table.c:308 task_work_run+0x130/0x1e4 kernel/task_work.c:164 exit_task_work include/linux/task_work.h:32 [inline] do_exit+0x688/0x2134 kernel/exit.c:872 do_group_exit+0x110/0x268 kernel/exit.c:994 get_signal+0x634/0x1550 kernel/signal.c:2889 do_signal arch/arm64/kernel/signal.c:890 [inline] do_notify_resume+0x3d0/0x32b8 arch/arm64/kernel/signal.c:943 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:597 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 Code: b003ad00 91258000 aa1303e1 95be400e (d4210000) ---[ end trace 097eb8a1aef3a5dd ]---