general protection fault, probably for non-canonical address 0xdffffc000eeeeef0: 0000 [#1] PREEMPT SMP KASAN KASAN: probably user-memory-access in range [0x0000000077777780-0x0000000077777787] CPU: 1 PID: 10069 Comm: syz-executor.5 Not tainted 5.9.0-rc3-next-20200903-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:rb_first+0x3e/0x80 lib/rbtree.c:473 Code: ec 08 80 3c 02 00 75 46 48 bb 00 00 00 00 00 fc ff df 48 8b 07 48 85 c0 75 05 eb 1d 48 89 d0 48 8d 78 10 48 89 fa 48 c1 ea 03 <80> 3c 1a 00 75 0f 48 8b 50 10 48 85 d2 75 e3 48 83 c4 08 5b c3 48 RSP: 0018:ffffc900088ef2a8 EFLAGS: 00010207 RAX: 0000000077777777 RBX: dffffc0000000000 RCX: ffffc90014116000 RDX: 000000000eeeeef0 RSI: ffffffff866ff2e6 RDI: 0000000077777787 RBP: 0000000000000400 R08: 0000000000000000 R09: ffffffff8abcb60f R10: 000000000000004f R11: 0000000000000001 R12: 000000000000004f R13: ffff8880a4383000 R14: ffff8880a43833b9 R15: 0000000000000000 FS: 00007f3dccabe700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004e0e70 CR3: 00000002174c6000 CR4: 00000000001526e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: fq_reset net/sched/sch_fq.c:680 [inline] fq_reset+0x18e/0x3d0 net/sched/sch_fq.c:662 qdisc_reset+0xd9/0x790 net/sched/sch_generic.c:920 qdisc_deactivate net/sched/sch_generic.c:1147 [inline] dev_deactivate_queue+0x1a0/0x270 net/sched/sch_generic.c:1163 netdev_for_each_tx_queue include/linux/netdevice.h:2249 [inline] dev_deactivate_many+0xec/0x950 net/sched/sch_generic.c:1207 dev_deactivate+0xef/0x1c0 net/sched/sch_generic.c:1239 qdisc_graft+0xdc1/0x1240 net/sched/sch_api.c:1054 tc_modify_qdisc+0xb4b/0x1990 net/sched/sch_api.c:1673 rtnetlink_rcv_msg+0x44e/0xad0 net/core/rtnetlink.c:5563 netlink_rcv_skb+0x15a/0x430 net/netlink/af_netlink.c:2470 netlink_unicast_kernel net/netlink/af_netlink.c:1304 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1330 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1919 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:671 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2353 ___sys_sendmsg+0xf3/0x170 net/socket.c:2407 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2440 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45d5b9 Code: 5d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 2b b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f3dccabdc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000002cec0 RCX: 000000000045d5b9 RDX: 0000000000000000 RSI: 0000000020000380 RDI: 0000000000000005 RBP: 000000000118cf80 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118cf4c R13: 00007ffc5fdefb8f R14: 00007f3dccabe9c0 R15: 000000000118cf4c Modules linked in: ---[ end trace f9b9302ffd13ee75 ]--- RIP: 0010:rb_first+0x3e/0x80 lib/rbtree.c:473 Code: ec 08 80 3c 02 00 75 46 48 bb 00 00 00 00 00 fc ff df 48 8b 07 48 85 c0 75 05 eb 1d 48 89 d0 48 8d 78 10 48 89 fa 48 c1 ea 03 <80> 3c 1a 00 75 0f 48 8b 50 10 48 85 d2 75 e3 48 83 c4 08 5b c3 48 RSP: 0018:ffffc900088ef2a8 EFLAGS: 00010207 RAX: 0000000077777777 RBX: dffffc0000000000 RCX: ffffc90014116000 RDX: 000000000eeeeef0 RSI: ffffffff866ff2e6 RDI: 0000000077777787 RBP: 0000000000000400 R08: 0000000000000000 R09: ffffffff8abcb60f R10: 000000000000004f R11: 0000000000000001 R12: 000000000000004f R13: ffff8880a4383000 R14: ffff8880a43833b9 R15: 0000000000000000 FS: 00007f3dccabe700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004e0e70 CR3: 00000002174c6000 CR4: 00000000001526e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400