8021q: adding VLAN 0 to HW filter on device team0 ------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(!hlock->nest_lock) ------------[ cut here ]------------ Bad or missing usercopy whitelist? Kernel memory overwrite attempt detected to SLAB object 'task_struct' (offset 1432, size 2)! WARNING: CPU: 1 PID: 38 at mm/usercopy.c:83 usercopy_warn+0xee/0x110 mm/usercopy.c:78 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 38 Comm: فd Not tainted 4.20.0-rc4+ #327 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ------------[ cut here ]------------ kernel BUG at mm/slab.c:4425! WARNING: CPU: 1 PID: 38 at kernel/rcu/tree_plugin.h:438 __rcu_read_unlock+0x266/0x2e0 kernel/rcu/tree_plugin.h:432 Modules linked in: CPU: 1 PID: 38 Comm: فd Not tainted 4.20.0-rc4+ #327 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 usercopy: Kernel memory overwrite attempt detected to SLAB object 'signal_cache' (offset 1328, size 23)! ------------[ cut here ]------------ kernel BUG at mm/usercopy.c:102! invalid opcode: 0000 [#1] PREEMPT SMP KASAN ================================================================== CPU: 1 PID: 38 Comm: فd Not tainted 4.20.0-rc4+ #327 BUG: KASAN: stack-out-of-bounds in calc_delta_fair kernel/sched/fair.c:630 [inline] BUG: KASAN: stack-out-of-bounds in update_curr+0x9c0/0xbd0 kernel/sched/fair.c:824 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Read of size 8 at addr ffff8881d9b4a4c0 by task syz-executor598/6057 RIP: 0010:usercopy_abort+0xbb/0xbd mm/usercopy.c:90 Code: c0 e8 47 ae b1 ff 48 8b 55 c0 49 89 d9 4d 89 f0 ff 75 c8 4c 89 e1 4c 89 ee 48 c7 c7 00 dc 34 88 ff 75 d0 41 57 e8 27 fa 97 ff <0f> 0b e8 1c ae b1 ff e8 97 13 f5 ff 8b 95 e4 fe ff ff 4c 89 e1 31 RSP: 0018:ffff8881d9b49438 EFLAGS: 00010086 RAX: 0000000000000068 RBX: ffffffff88291020 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8165eae5 RDI: 0000000000000005 RBP: ffff8881d9b49490 R08: ffff8881d9b4a440 R09: ffffed103b5e3ef8 R10: ffffed103b5e3ef8 R11: ffff8881daf1f7c7 R12: ffffffff8914f7c5 R13: ffffffff8834da60 R14: ffffffff8834d9a0 R15: ffffffff8834d960 FS: 0000000000000000(0000) GS:ffff8881daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000130 CR3: 00000001bedee000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: Modules linked in: ---[ end trace 0e43e78e4dc5c0bc ]--- RIP: 0010:usercopy_abort+0xbb/0xbd mm/usercopy.c:90 Code: c0 e8 47 ae b1 ff 48 8b 55 c0 49 89 d9 4d 89 f0 ff 75 c8 4c 89 e1 4c 89 ee 48 c7 c7 00 dc 34 88 ff 75 d0 41 57 e8 27 fa 97 ff <0f> 0b e8 1c ae b1 ff e8 97 13 f5 ff 8b 95 e4 fe ff ff 4c 89 e1 31 RSP: 0018:ffff8881d9b49438 EFLAGS: 00010086 RAX: 0000000000000068 RBX: ffffffff88291020 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8165eae5 RDI: 0000000000000005 RBP: ffff8881d9b49490 R08: ffff8881d9b4a440 R09: ffffed103b5e3ef8 R10: ffffed103b5e3ef8 R11: ffff8881daf1f7c7 R12: ffffffff8914f7c5 R13: ffffffff8834da60 R14: ffffffff8834d9a0 R15: ffffffff8834d960 FS: 0000000000000000(0000) GS:ffff8881daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000130 CR3: 00000001bedee000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400