Hello, syzbot found the following issue on: HEAD commit: c194837ebb57 Merge branch 'for-next/core', remote-tracking.. git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci console output: https://syzkaller.appspot.com/x/log.txt?x=16ee7ddf080000 kernel config: https://syzkaller.appspot.com/x/.config?x=15a770deac0c935a dashboard link: https://syzkaller.appspot.com/bug?extid=430e395e8c74123e1918 compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2 userspace arch: arm64 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/8d8ae425e7fa/disk-c194837e.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/c540d501ebe7/vmlinux-c194837e.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+430e395e8c74123e1918@xxxxxxxxxxxxxxxxxxxxxxxxx list_del corruption. next->prev should be ffff00010248a8a0, but was dead4ead00000000. (next=ffff0000f3429438) ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:64! Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 3061 Comm: syz-executor.3 Not tainted 6.0.0-rc6-syzkaller-17742-gc194837ebb57 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __list_del_entry_valid+0xcc/0xd0 lib/list_debug.c:62 lr : __list_del_entry_valid+0xcc/0xd0 lib/list_debug.c:62 sp : ffff80001281bb90 x29: ffff80001281bb90 x28: ffff0000c8b4b500 x27: 0000000000000000 x26: ffff80000d30cf28 x25: ffff80000d309000 x24: 0000000000000008 x23: 0000000000000003 x22: ffff80000d56ad28 x21: 0000000000000000 x20: ffff00010248a8a0 x19: ffff00010248a898 x18: 00000000000000c0 x17: 20747562202c3061 x16: ffff80000db49158 x15: ffff0000c8b4b500 x14: 0000000000000000 x13: 00000000ffffffff x12: ffff0000c8b4b500 x11: ff808000081c1630 x10: 0000000000000000 x9 : bf3d65c85afff700 x8 : bf3d65c85afff700 x7 : ffff800008195d30 x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000 x2 : ffff0001fefbecd0 x1 : 0000000000000001 x0 : 000000000000006d Call trace: __list_del_entry_valid+0xcc/0xd0 lib/list_debug.c:62 __list_del_entry include/linux/list.h:134 [inline] list_del_init include/linux/list.h:206 [inline] kobj_kset_leave lib/kobject.c:175 [inline] __kobject_del+0xa8/0x1f8 lib/kobject.c:592 kobject_cleanup+0xfc/0x280 lib/kobject.c:664 kobject_release lib/kobject.c:704 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x94/0xf8 lib/kobject.c:721 nilfs_sysfs_delete_segctor_group fs/nilfs2/sysfs.c:700 [inline] nilfs_sysfs_delete_device_group+0x50/0x7c fs/nilfs2/sysfs.c:1044 destroy_nilfs+0x4c/0xa0 fs/nilfs2/the_nilfs.c:89 nilfs_put_super+0x84/0x9c fs/nilfs2/super.c:480 generic_shutdown_super+0x8c/0x190 fs/super.c:491 kill_block_super+0x30/0x78 fs/super.c:1427 deactivate_locked_super+0x70/0xe8 fs/super.c:332 deactivate_super+0xd0/0xd4 fs/super.c:363 cleanup_mnt+0x1f8/0x234 fs/namespace.c:1186 __cleanup_mnt+0x20/0x30 fs/namespace.c:1193 task_work_run+0xc4/0x14c kernel/task_work.c:177 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x174/0x1f0 arch/arm64/kernel/signal.c:1127 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/0x150 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:654 el0t_64_sync+0x18c/0x190 Code: d4210000 9001b460 912e4800 94a768fa (d4210000) ---[ end trace 0000000000000000 ]--- --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
