syzbot

list_del corruption. prev->next should be ffff0000c8334828, but was ffff80001503f2e0
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kernel BUG at lib/list_debug.c:61!
Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 3996 Comm: syz-executor134 Not tainted 5.15.148-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
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 : ffff80001c7078b0
x29: ffff80001c7078b0 x28: 1ffff00002923a9d x27: 0000000000000000
x26: dfff800000000000 x25: ffff0000c8332828 x24: ffff80001491d320
x23: dfff800000000000 x22: ffff0000c8332828 x21: dfff800000000000
x20: ffff80001503f2e0 x19: ffff0000c8334828 x18: 1fffe000368fe78e
x17: 1fffe000368fe78e x16: ffff8000119814b4 x15: ffff8000149bed40
x14: 1ffff0000292406a x13: dfff800000000000 x12: 0000000000000001
x11: 0000000000000000 x10: 0000000000000000 x9 : 9a75cea1f7e07200
x8 : 9a75cea1f7e07200 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000080 x4 : 0000000000000000 x3 : ffff80000a95db80
x2 : ffff0001b47f3d10 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:186
 __efivar_entry_iter+0x11c/0x19c drivers/firmware/efi/vars.c:1089
 efivarfs_kill_sb+0x3c/0x4c fs/efivarfs/super.c:261
 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: f003ae80 91208000 aa1303e1 95befc62 (d4210000) 
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