list_add corruption. prev->next should be next (ffff8881f7055720), but was ffff8881f705c060. (prev=ffff88810c520470). ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:28! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 12 Comm: ksoftirqd/0 Not tainted 5.10.117-syzkaller-00814-gfdd06dc6b0f8 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__list_add_valid+0xc6/0xd0 lib/list_debug.c:26 Code: 48 c7 c7 40 db 43 85 4c 89 e6 4c 89 f1 31 c0 e8 ad 2b 40 02 0f 0b 48 c7 c7 00 dc 43 85 4c 89 f6 4c 89 e1 31 c0 e8 97 2b 40 02 <0f> 0b 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 57 41 56 41 54 53 49 RSP: 0018:ffffc900000c77e0 EFLAGS: 00010046 RAX: 0000000000000075 RBX: ffff8881f7055728 RCX: 800ea2b0a912a600 RDX: 0000000080000101 RSI: 0000000080000101 RDI: 0000000000000000 RBP: ffffc900000c7808 R08: ffffffff8153a998 R09: ffffed103ee04e83 R10: ffffed103ee04e83 R11: 1ffff1103ee04e82 R12: ffff88810c520470 R13: dffffc0000000000 R14: ffff8881f7055720 R15: ffff8881121f4a98 FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f661efc9ff8 CR3: 000000011afb3000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __list_add include/linux/list.h:67 [inline] list_add_tail include/linux/list.h:100 [inline] insert_work+0x107/0x330 kernel/workqueue.c:1352 __queue_work+0x971/0xd30 kernel/workqueue.c:1514 queue_work_on+0xf2/0x150 kernel/workqueue.c:1541 queue_work include/linux/workqueue.h:513 [inline] cgroup_bpf_release_fn+0xd0/0xe0 kernel/bpf/cgroup.c:163 percpu_ref_put_many include/linux/percpu-refcount.h:322 [inline] percpu_ref_put include/linux/percpu-refcount.h:338 [inline] percpu_ref_call_confirm_rcu lib/percpu-refcount.c:162 [inline] percpu_ref_switch_to_atomic_rcu+0x5a2/0x5b0 lib/percpu-refcount.c:199 rcu_do_batch+0x59e/0xc40 kernel/rcu/tree.c:2485 rcu_core+0x59b/0xe30 kernel/rcu/tree.c:2726 rcu_core_si+0x9/0x10 kernel/rcu/tree.c:2739 __do_softirq+0x27e/0x596 kernel/softirq.c:305 run_ksoftirqd+0x23/0x30 kernel/softirq.c:667 smpboot_thread_fn+0x551/0x930 kernel/smpboot.c:164 kthread+0x349/0x3d0 kernel/kthread.c:313 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 Modules linked in: ---[ end trace 023a95e836ec2473 ]--- RIP: 0010:__list_add_valid+0xc6/0xd0 lib/list_debug.c:26 Code: 48 c7 c7 40 db 43 85 4c 89 e6 4c 89 f1 31 c0 e8 ad 2b 40 02 0f 0b 48 c7 c7 00 dc 43 85 4c 89 f6 4c 89 e1 31 c0 e8 97 2b 40 02 <0f> 0b 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 57 41 56 41 54 53 49 RSP: 0018:ffffc900000c77e0 EFLAGS: 00010046 RAX: 0000000000000075 RBX: ffff8881f7055728 RCX: 800ea2b0a912a600 RDX: 0000000080000101 RSI: 0000000080000101 RDI: 0000000000000000 RBP: ffffc900000c7808 R08: ffffffff8153a998 R09: ffffed103ee04e83 R10: ffffed103ee04e83 R11: 1ffff1103ee04e82 R12: ffff88810c520470 R13: dffffc0000000000 R14: ffff8881f7055720 R15: ffff8881121f4a98 FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f661efc9ff8 CR3: 000000011afb3000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400