BUG: MAX_LOCK_DEPTH too low! turning off the locking correctness validator. depth: 48 max: 48! 48 locks held by syz-executor6/30643: #0: 00000000ac2541d7 (rcu_read_lock_bh){....}, at: __dev_queue_xmit+0x323/0x3900 net/core/dev.c:3521 #1: 00000000c22902c0 (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2082 [inline] #1: 00000000c22902c0 (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787 #2: 00000000c22902c0 (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2082 [inline] #2: 00000000c22902c0 (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787 #3: 00000000c22902c0 (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2082 [inline] #3: 00000000c22902c0 (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787 #4: 00000000c22902c0 (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2082 [inline] #4: 00000000c22902c0 (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787 #5: 00000000c22902c0 (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2082 [inline] #5: 00000000c22902c0 (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787 #6: 00000000c22902c0 (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2082 [inline] #6: 00000000c22902c0 (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787 #7: 00000000c22902c0 (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2082 [inline] #7: 00000000c22902c0 (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787 #8: 00000000c22902c0 (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2082 [inline] #8: 00000000c22902c0 (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787 #9: 00000000c22902c0 (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2082 [inline] #9: 00000000c22902c0 (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787 netlink: 8 bytes leftover after parsing attributes in process `syz-executor5'. #10: 00000000c22902c0 (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2082 [inline] #10: 00000000c22902c0 (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787 #11: 00000000c22902c0 (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2082 [inline] #11: 00000000c22902c0 (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787 #12: 00000000c22902c0 (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2082 [inline] #12: 00000000c22902c0 (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787 #13: 00000000c22902c0 (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2082 [inline] #13: 00000000c22902c0 (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787 #14: 00000000c22902c0 (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2082 [inline] #14: 00000000c22902c0 (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787 #15: 00000000c22902c0 (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2082 [inline] #15: 00000000c22902c0 (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787 #16: 00000000c22902c0 (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2082 [inline] #16: 00000000c22902c0 (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787 netlink: 8 bytes leftover after parsing attributes in process `syz-executor5'. #17: 00000000c22902c0 (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2082 [inline] #17: 00000000c22902c0 (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787 #18: 00000000c22902c0 (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2082 [inline] #18: 00000000c22902c0 (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787 #19: 00000000c22902c0 (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2082 [inline] #19: 00000000c22902c0 (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787 #20: 00000000c22902c0 (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2082 [inline] #20: 00000000c22902c0 (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787 #21: 00000000c22902c0 (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2082 [inline] #21: 00000000c22902c0 (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787 #22: 00000000c22902c0 (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2082 [inline] #22: 00000000c22902c0 (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787 #23: 00000000c22902c0 (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2082 [inline] #23: 00000000c22902c0 (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787 #24: 00000000c22902c0 (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2082 [inline] #24: 00000000c22902c0 (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787 #25: 00000000c22902c0 (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2082 [inline] #25: 00000000c22902c0 (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787 #26: 00000000c22902c0 (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2082 [inline] #26: 00000000c22902c0 (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787 #27: 00000000c22902c0 (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2082 [inline] #27: 00000000c22902c0 (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787 #28: 00000000c22902c0 (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2082 [inline] #28: 00000000c22902c0 (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787 #29: 00000000c22902c0 (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2082 [inline] #29: 00000000c22902c0 (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787 #30: 00000000c22902c0 (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2082 [inline] #30: 00000000c22902c0 (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787 #31: 00000000c22902c0 (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2082 [inline] #31: 00000000c22902c0 (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787 #32: 00000000c22902c0 (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2082 [inline] #32: 00000000c22902c0 (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787 #33: 00000000c22902c0 (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2082 [inline] #33: 00000000c22902c0 (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787 #34: 00000000c22902c0 (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2082 [inline] #34: 00000000c22902c0 (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787 #35: 00000000c22902c0 (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2082 [inline] #35: 00000000c22902c0 (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787 #36: 00000000c22902c0 (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2082 [inline] #36: 00000000c22902c0 (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787 #37: 00000000c22902c0 (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2082 [inline] #37: 00000000c22902c0 (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787 #38: 00000000c22902c0 (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2082 [inline] #38: 00000000c22902c0 (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787 #39: 00000000c22902c0 (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2082 [inline] #39: 00000000c22902c0 (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787 #40: 00000000c22902c0 (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2082 [inline] #40: 00000000c22902c0 (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787 #41: 00000000c22902c0 (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2082 [inline] #41: 00000000c22902c0 (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787 #42: 00000000c22902c0 (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2082 [inline] #42: 00000000c22902c0 (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787 #43: 00000000c22902c0 (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2082 [inline] #43: 00000000c22902c0 (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787 #44: 00000000c22902c0 (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2082 [inline] #44: 00000000c22902c0 (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787 #45: 00000000c22902c0 (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2082 [inline] #45: 00000000c22902c0 (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787 #46: 00000000c22902c0 (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2082 [inline] #46: 00000000c22902c0 (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787 #47: 00000000c22902c0 (rcu_read_lock){....}, at: __skb_pull include/linux/skbuff.h:2082 [inline] #47: 00000000c22902c0 (rcu_read_lock){....}, at: skb_mac_gso_segment+0x221/0x720 net/core/dev.c:2787 INFO: lockdep is turned off. CPU: 1 PID: 30643 Comm: syz-executor6 Not tainted 4.17.0-rc6+ #68 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1b9/0x294 lib/dump_stack.c:113 __lock_acquire+0x1788/0x5140 kernel/locking/lockdep.c:3449 lock_acquire+0x1dc/0x520 kernel/locking/lockdep.c:3920 rcu_lock_acquire include/linux/rcupdate.h:246 [inline] rcu_read_lock include/linux/rcupdate.h:632 [inline] skb_mac_gso_segment+0x25b/0x720 net/core/dev.c:2789 nsh_gso_segment+0x470/0xb40 net/nsh/nsh.c:111 skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792 nsh_gso_segment+0x470/0xb40 net/nsh/nsh.c:111 skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792 nsh_gso_segment+0x470/0xb40 net/nsh/nsh.c:111 skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792 nsh_gso_segment+0x470/0xb40 net/nsh/nsh.c:111 skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792 nsh_gso_segment+0x470/0xb40 net/nsh/nsh.c:111 skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792 nsh_gso_segment+0x470/0xb40 net/nsh/nsh.c:111 skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792 nsh_gso_segment+0x470/0xb40 net/nsh/nsh.c:111 skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792 nsh_gso_segment+0x470/0xb40 net/nsh/nsh.c:111 skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792 nsh_gso_segment+0x470/0xb40 net/nsh/nsh.c:111 skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792 nsh_gso_segment+0x470/0xb40 net/nsh/nsh.c:111 skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792 nsh_gso_segment+0x470/0xb40 net/nsh/nsh.c:111 skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792 nsh_gso_segment+0x470/0xb40 net/nsh/nsh.c:111 skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792 nsh_gso_segment+0x470/0xb40 net/nsh/nsh.c:111 skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792 nsh_gso_segment+0x470/0xb40 net/nsh/nsh.c:111 skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792 nsh_gso_segment+0x470/0xb40 net/nsh/nsh.c:111 skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792 nsh_gso_segment+0x470/0xb40 net/nsh/nsh.c:111 skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792 nsh_gso_segment+0x470/0xb40 net/nsh/nsh.c:111 skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792 nsh_gso_segment+0x470/0xb40 net/nsh/nsh.c:111 skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792 nsh_gso_segment+0x470/0xb40 net/nsh/nsh.c:111 skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792 nsh_gso_segment+0x470/0xb40 net/nsh/nsh.c:111 skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792 nsh_gso_segment+0x470/0xb40 net/nsh/nsh.c:111 skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792 nsh_gso_segment+0x470/0xb40 net/nsh/nsh.c:111 skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792 nsh_gso_segment+0x470/0xb40 net/nsh/nsh.c:111 skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792 nsh_gso_segment+0x470/0xb40 net/nsh/nsh.c:111 skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792 nsh_gso_segment+0x470/0xb40 net/nsh/nsh.c:111 skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792 nsh_gso_segment+0x470/0xb40 net/nsh/nsh.c:111 skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792 nsh_gso_segment+0x470/0xb40 net/nsh/nsh.c:111 skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792 nsh_gso_segment+0x470/0xb40 net/nsh/nsh.c:111 skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792 nsh_gso_segment+0x470/0xb40 net/nsh/nsh.c:111 skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792 nsh_gso_segment+0x470/0xb40 net/nsh/nsh.c:111 skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792 nsh_gso_segment+0x470/0xb40 net/nsh/nsh.c:111 skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792 nsh_gso_segment+0x470/0xb40 net/nsh/nsh.c:111 skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792 nsh_gso_segment+0x470/0xb40 net/nsh/nsh.c:111 skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792 nsh_gso_segment+0x470/0xb40 net/nsh/nsh.c:111 skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792 nsh_gso_segment+0x470/0xb40 net/nsh/nsh.c:111 skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792 nsh_gso_segment+0x470/0xb40 net/nsh/nsh.c:111 skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792 nsh_gso_segment+0x470/0xb40 net/nsh/nsh.c:111 skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792 nsh_gso_segment+0x470/0xb40 net/nsh/nsh.c:111 skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792 nsh_gso_segment+0x470/0xb40 net/nsh/nsh.c:111 skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792 nsh_gso_segment+0x470/0xb40 net/nsh/nsh.c:111 skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792 nsh_gso_segment+0x470/0xb40 net/nsh/nsh.c:111 skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792 nsh_gso_segment+0x470/0xb40 net/nsh/nsh.c:111 skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792 nsh_gso_segment+0x470/0xb40 net/nsh/nsh.c:111 skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792 nsh_gso_segment+0x470/0xb40 net/nsh/nsh.c:111 skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792 nsh_gso_segment+0x470/0xb40 net/nsh/nsh.c:111 skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792 nsh_gso_segment+0x470/0xb40 net/nsh/nsh.c:111 skb_mac_gso_segment+0x3ad/0x720 net/core/dev.c:2792 __skb_gso_segment+0x3bb/0x870 net/core/dev.c:2865 skb_gso_segment include/linux/netdevice.h:4072 [inline] validate_xmit_skb+0x54d/0xd90 net/core/dev.c:3122 __dev_queue_xmit+0xc0c/0x3900 net/core/dev.c:3579 dev_queue_xmit+0x17/0x20 net/core/dev.c:3620 packet_snd net/packet/af_packet.c:2921 [inline] packet_sendmsg+0x4275/0x6100 net/packet/af_packet.c:2946 sock_sendmsg_nosec net/socket.c:629 [inline] sock_sendmsg+0xd5/0x120 net/socket.c:639 __sys_sendto+0x3d7/0x670 net/socket.c:1789 __do_sys_sendto net/socket.c:1801 [inline] __se_sys_sendto net/socket.c:1797 [inline] __x64_sys_sendto+0xe1/0x1a0 net/socket.c:1797 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x455a09 RSP: 002b:00007f125b3edc68 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f125b3ee6d4 RCX: 0000000000455a09 RDX: 0000000000000176 RSI: 00000000200000c0 RDI: 0000000000000013 RBP: 000000000072bea0 R08: 0000000020000080 R09: 000000000000001c R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000000005d8 R14: 00000000006fdce0 R15: 0000000000000000 kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 1 PID: 30643 Comm: syz-executor6 Not tainted 4.17.0-rc6+ #68 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:skb_reset_network_header include/linux/skbuff.h:2306 [inline] RIP: 0010:nsh_gso_segment+0x3a/0xb40 net/nsh/nsh.c:87 RSP: 0018:ffff8801aa585f98 EFLAGS: 00010a06 RAX: dffffc0000000000 RBX: ffffffff897e00e0 RCX: 1fecbfffffde10cc RDX: ffffed00354b0c22 RSI: ffffffff876a7afd RDI: ff65fffffef0858b RBP: ffff8801aa586020 R08: ffff880198924600 R09: 0000000000000000 R10: fffffbfff12ea1dc R11: ffff880198924600 R12: ff65fffffef0858b R13: dffffc0000000000 R14: 0000000000004f89 R15: 0000000000004f89 FS: 00007f125b3ee700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 kasan: CONFIG_KASAN_INLINE enabled CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000200002c0 CR3: 00000001d8346000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: Code: ------------[ cut here ]------------ kasan: GPF could be caused by NULL-ptr deref or user memory access Bad or missing usercopy whitelist? Kernel memory overwrite attempt detected to SLAB object 'vm_area_struct' (offset 119, size 1)! WARNING: CPU: 1 PID: 30643 at mm/usercopy.c:81 usercopy_warn+0xf5/0x120 mm/usercopy.c:76