list_del corruption. prev->next should be ffff0000c0a60828, but was ffff800015d0bbc0. (prev=ffff800015d0bbc0) ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:61! Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 9603 Comm: syz-executor.4 Not tainted 6.1.24-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 : ffff80001f5b7850 x29: ffff80001f5b7850 x28: 1ffff00002ab1aa9 x27: dfff800000000000 x26: 0000000000000002 x25: 0000000000000002 x24: ffff0000c0a62828 x23: dfff800000000000 x22: dfff800000000000 x21: ffff800015d0bbc0 x20: ffff0000c0a62828 x19: ffff0000c0a60828 x18: 1fffe000368ba776 x17: ffff80001558d000 x16: ffff8000120de45c x15: ffff0001b45d3bbc x14: 1ffff00002ab20b0 x13: dfff800000000000 x12: 0000000000000001 x11: ff808000083429a4 x10: 0000000000000000 x9 : 3163df2258227a00 x8 : 3163df2258227a00 x7 : ffff800008279fb8 x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000001 x3 : ffff80000aa6874c x2 : ffff0001b45d3cd0 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 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 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: 91010000 aa1303e1 aa1503e3 95d812ad (d4210000) ---[ end trace 0000000000000000 ]---