list_add corruption. prev->next should be next (ffff8881f725c060), but was ffff88811373a870. (prev=ffff88811373a870). ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:28! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 644 Comm: syz-executor.2 Not tainted 5.10.116-syzkaller-986966-g0577ff1c6970 #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 00 d8 43 85 4c 89 e6 4c 89 f1 31 c0 e8 2d 25 40 02 0f 0b 48 c7 c7 c0 d8 43 85 4c 89 f6 4c 89 e1 31 c0 e8 17 25 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:ffffc90000007a00 EFLAGS: 00010046 RAX: 0000000000000075 RBX: ffff8881f725c068 RCX: 7da71253f0399400 RDX: 0000000000000102 RSI: 0000000000000102 RDI: 0000000000000000 RBP: ffffc90000007a28 R08: ffffffff8153a998 R09: ffffed103ee4a5d8 R10: ffffed103ee4a5d8 R11: 1ffff1103ee4a5d7 R12: ffff88811373a870 R13: dffffc0000000000 R14: ffff8881f725c060 R15: ffff88811373a870 FS: 00007fa388d49700(0000) GS:ffff8881f7200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f222c584ff8 CR3: 0000000113d68000 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] css_release+0xae/0xc0 kernel/cgroup/cgroup.c:5161 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 asm_call_irq_on_stack+0xf/0x20 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline] do_softirq_own_stack+0x60/0x80 arch/x86/kernel/irq_64.c:77 invoke_softirq kernel/softirq.c:402 [inline] __irq_exit_rcu+0x128/0x150 kernel/softirq.c:432 irq_exit_rcu+0x9/0x10 kernel/softirq.c:444 sysvec_apic_timer_interrupt+0xbf/0xe0 arch/x86/kernel/apic/apic.c:1095 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 RIP: 0010:native_restore_fl arch/x86/include/asm/irqflags.h:41 [inline] RIP: 0010:arch_local_irq_restore arch/x86/include/asm/irqflags.h:84 [inline] RIP: 0010:console_unlock+0xb5c/0xf20 kernel/printk/printk.c:2555 Code: 85 db 4c 8d b4 24 60 01 00 00 0f 85 82 03 00 00 e8 49 6e 00 00 48 8b 44 24 30 48 89 84 24 90 00 00 00 ff b4 24 90 00 00 00 9d <48> 8b 44 24 38 42 80 3c 38 00 74 08 4c 89 f7 e8 f0 e0 52 00 48 c7 RSP: 0018:ffffc900018f7180 EFLAGS: 00000246 RAX: 0000000000000246 RBX: 0000000000000000 RCX: ffff88811481bb40 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: ffffc900018f7410 R08: ffffffff8153a4db R09: 0000000000000003 R10: fffff5200031ee21 R11: 1ffff9200031ee20 R12: ffffc900018f7380 R13: 1ffffffff0c3ad81 R14: ffffc900018f72e0 R15: dffffc0000000000 vprintk_emit+0x44b/0x640 kernel/printk/printk.c:2063 vprintk_default+0x26/0x30 kernel/printk/printk.c:2080 vprintk_func+0x19d/0x1e0 kernel/printk/printk_safe.c:401 printk+0xcf/0x10f kernel/printk/printk.c:2111 fail_dump lib/fault-inject.c:45 [inline] should_fail+0x398/0x510 lib/fault-inject.c:146 __should_failslab+0x9f/0xe0 mm/failslab.c:33 should_failslab+0x9/0x20 mm/slab_common.c:1229 slab_pre_alloc_hook mm/slab.h:558 [inline] slab_alloc_node mm/slub.c:2877 [inline] slab_alloc mm/slub.c:2964 [inline] kmem_cache_alloc_trace+0x3a/0x330 mm/slub.c:2981 kmalloc include/linux/slab.h:552 [inline] kzalloc include/linux/slab.h:664 [inline] percpu_ref_init+0xd0/0x330 lib/percpu-refcount.c:75 css_create kernel/cgroup/cgroup.c:5259 [inline] cgroup_apply_control_enable+0x3a2/0x12f0 kernel/cgroup/cgroup.c:3110 cgroup_apply_control+0x93/0x710 kernel/cgroup/cgroup.c:3192 cgroup_subtree_control_write+0xd19/0x1310 kernel/cgroup/cgroup.c:3350 cgroup_file_write+0x28e/0x590 kernel/cgroup/cgroup.c:3793 kernfs_fop_write_iter+0x2d0/0x410 fs/kernfs/file.c:296 call_write_iter include/linux/fs.h:1947 [inline] new_sync_write fs/read_write.c:518 [inline] vfs_write+0xc1c/0xf40 fs/read_write.c:605 ksys_write+0x198/0x2c0 fs/read_write.c:658 __do_sys_write fs/read_write.c:670 [inline] __se_sys_write fs/read_write.c:667 [inline] __x64_sys_write+0x7b/0x90 fs/read_write.c:667 do_syscall_64+0x34/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7fa388df4049 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fa388d49168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fa388f07030 RCX: 00007fa388df4049 RDX: 0000000000000006 RSI: 0000000020000140 RDI: 0000000000000004 RBP: 00007fa388d491d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffc6b6af9af R14: 00007fa388d49300 R15: 0000000000022000 Modules linked in: ---[ end trace 00d6773322cde607 ]--- RIP: 0010:__list_add_valid+0xc6/0xd0 lib/list_debug.c:26 Code: 48 c7 c7 00 d8 43 85 4c 89 e6 4c 89 f1 31 c0 e8 2d 25 40 02 0f 0b 48 c7 c7 c0 d8 43 85 4c 89 f6 4c 89 e1 31 c0 e8 17 25 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:ffffc90000007a00 EFLAGS: 00010046 RAX: 0000000000000075 RBX: ffff8881f725c068 RCX: 7da71253f0399400 RDX: 0000000000000102 RSI: 0000000000000102 RDI: 0000000000000000 RBP: ffffc90000007a28 R08: ffffffff8153a998 R09: ffffed103ee4a5d8 R10: ffffed103ee4a5d8 R11: 1ffff1103ee4a5d7 R12: ffff88811373a870 R13: dffffc0000000000 R14: ffff8881f725c060 R15: ffff88811373a870 FS: 00007fa388d49700(0000) GS:ffff8881f7200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f222c584ff8 CR3: 0000000113d68000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 85 db test %ebx,%ebx 2: 4c 8d b4 24 60 01 00 lea 0x160(%rsp),%r14 9: 00 a: 0f 85 82 03 00 00 jne 0x392 10: e8 49 6e 00 00 callq 0x6e5e 15: 48 8b 44 24 30 mov 0x30(%rsp),%rax 1a: 48 89 84 24 90 00 00 mov %rax,0x90(%rsp) 21: 00 22: ff b4 24 90 00 00 00 pushq 0x90(%rsp) 29: 9d popfq * 2a: 48 8b 44 24 38 mov 0x38(%rsp),%rax <-- trapping instruction 2f: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1) 34: 74 08 je 0x3e 36: 4c 89 f7 mov %r14,%rdi 39: e8 f0 e0 52 00 callq 0x52e12e 3e: 48 rex.W 3f: c7 .byte 0xc7