================================================================== BUG: KASAN: stack-out-of-bounds in pgd_val arch/x86/include/asm/paravirt.h:414 [inline] BUG: KASAN: stack-out-of-bounds in p4d_page_vaddr arch/x86/include/asm/pgtable.h:895 [inline] BUG: KASAN: stack-out-of-bounds in pud_offset arch/x86/include/asm/pgtable.h:907 [inline] BUG: KASAN: stack-out-of-bounds in vmalloc_fault+0x6d0/0x770 arch/x86/mm/fault.c:397 Read of size 8 at addr ffff8881da96cff8 by task kworker/u4:13/26141 PANIC: double fault, error_code: 0x0 CPU: 1 PID: 26141 Comm: kworker/u4:13 Not tainted 4.20.0-rc6+ #351 CPU: 0 PID: 8108 Comm: syz-executor2 Not tainted 4.20.0-rc6+ #351 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:match_held_lock+0x34/0x8d0 kernel/locking/lockdep.c:3401 Workqueue: cleanup_net (netns) Code: 55 48 89 e5 41 57 41 56 4c 8d 75 d8 41 55 49 89 fd 48 83 c7 10 41 54 53 48 8d 9d 38 ff ff ff 48 c1 eb 03 48 81 ec c8 00 00 00 <48> c7 85 38 ff ff ff b3 8a b5 41 48 c7 85 40 ff ff ff 07 c8 11 89 Call Trace: RSP: 0018:ffff8881d9bfdfd0 EFLAGS: 00010082 __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x244/0x39d lib/dump_stack.c:113 RAX: 0000000000000000 RBX: 1ffff1103b37fbff RCX: 0000000000000000 RDX: dffffc0000000000 RSI: ffffffff8959bf40 RDI: ffff8881bbda89d0 RBP: ffff8881d9bfe0c0 R08: ffff8881bbda8140 R09: ffffed103b5c5b5f R10: ffffed103b5c5b5f R11: ffff8881dae2dafb R12: ffff8881bbda8140 R13: ffff8881bbda89c0 R14: ffff8881d9bfe098 R15: 0000000000000000 FS: 00007fde99284700(0000) GS:ffff8881dae00000(0000) knlGS:0000000000000000 kasan: CONFIG_KASAN_INLINE enabled CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff8881d9bfdfc8 CR3: 00000001d8728000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 kasan: GPF could be caused by NULL-ptr deref or user memory access Call Trace: general protection fault: 0000 [#1] PREEMPT SMP KASAN