RBP: 00007ffdfc0c6ca0 R08: 0000000000000001 R09: 0000000120080522 R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff R13: 0000000000000008 R14: 0000000000000000 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] PREEMPT SMP KASAN CPU: 0 PID: 7624 Comm: syz-executor185 Not tainted 4.19.72 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:qdisc_destroy+0x2f/0x690 net/sched/sch_generic.c:948 Code: 57 41 56 41 55 41 54 49 89 fc 53 48 83 ec 28 e8 27 6d ed fb 49 8d 7c 24 10 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e d5 04 00 00 41 8b 5c 24 10 31 RSP: 0018:ffff8880955f7448 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffff88807ff3e900 RCX: ffffffff857ef0ba RDX: 0000000000000002 RSI: ffffffff857de969 RDI: 0000000000000010 RBP: ffff8880955f7498 R08: ffff8880964a2280 R09: ffff8880964a2b20 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffff88807ff3e900 R14: ffff88808a83e400 R15: ffff88807ff3e93c FS: 000000000127c880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffdfc0c6c70 CR3: 00000000a0949000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: sfb_destroy+0x61/0x80 net/sched/sch_sfb.c:472 qdisc_create+0xaa6/0x1230 net/sched/sch_api.c:1203 tc_modify_qdisc+0x51b/0x1bdc net/sched/sch_api.c:1570 rtnetlink_rcv_msg+0x463/0xb00 net/core/rtnetlink.c:4747 netlink_rcv_skb+0x17d/0x460 net/netlink/af_netlink.c:2454 rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:4765 netlink_unicast_kernel net/netlink/af_netlink.c:1317 [inline] netlink_unicast+0x537/0x720 net/netlink/af_netlink.c:1343 netlink_sendmsg+0x8ae/0xd70 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:632 ___sys_sendmsg+0x803/0x920 net/socket.c:2115 __sys_sendmsg+0x105/0x1d0 net/socket.c:2153 __do_sys_sendmsg net/socket.c:2162 [inline] __se_sys_sendmsg net/socket.c:2160 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2160 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4416d9 Code: e8 9c ae 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 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 0f 83 3b 0a fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffdfc0c6c68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004416d9 RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000004 RBP: 00007ffdfc0c6ca0 R08: 0000000000000001 R09: 0000000120080522 R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff R13: 0000000000000008 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 82073fda8f6c8478 ]--- RIP: 0010:qdisc_destroy+0x2f/0x690 net/sched/sch_generic.c:948 Code: 57 41 56 41 55 41 54 49 89 fc 53 48 83 ec 28 e8 27 6d ed fb 49 8d 7c 24 10 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e d5 04 00 00 41 8b 5c 24 10 31 RSP: 0018:ffff8880955f7448 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffff88807ff3e900 RCX: ffffffff857ef0ba RDX: 0000000000000002 RSI: ffffffff857de969 RDI: 0000000000000010 RBP: ffff8880955f7498 R08: ffff8880964a2280 R09: ffff8880964a2b20 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffff88807ff3e900 R14: ffff88808a83e400 R15: ffff88807ff3e93c FS: 000000000127c880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffdfc0c6c70 CR3: 00000000a0949000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400