RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd8e2f2c6d4 R13: 00000000004c77fb R14: 00000000004dd098 R15: 0000000000000005 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: 12339 Comm: syz-executor.0 Not tainted 5.3.0-rc7+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:qdisc_put+0x25/0x90 net/sched/sch_generic.c:983 Code: 00 00 00 00 00 55 48 89 e5 41 54 49 89 fc 53 e8 61 42 bf 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 04 3c 03 7e 54 41 8b 5c 24 10 31 ff 83 e3 01 RSP: 0018:ffff8880575d7488 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffff888062547440 RCX: ffffc90005f45000 RDX: 0000000000000002 RSI: ffffffff85b3328f RDI: 0000000000000010 RBP: ffff8880575d7498 R08: ffff88805e1dc040 R09: fffffbfff11cae67 R10: fffffbfff11cae66 R11: ffffffff88e57333 R12: 0000000000000000 R13: ffff888062547440 R14: ffff8880912a8640 R15: ffff88806254747c FS: 00007fd8e2f2c700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000022dc040 CR3: 0000000055315000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: sfb_destroy+0x61/0x80 net/sched/sch_sfb.c:468 qdisc_create+0xbc6/0x1210 net/sched/sch_api.c:1285 tc_modify_qdisc+0x524/0x1c50 net/sched/sch_api.c:1652 rtnetlink_rcv_msg+0x463/0xb00 net/core/rtnetlink.c:5223 netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2477 rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:5241 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline] netlink_unicast+0x531/0x710 net/netlink/af_netlink.c:1328 netlink_sendmsg+0x8a5/0xd60 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:637 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:657 ___sys_sendmsg+0x803/0x920 net/socket.c:2311 __sys_sendmsg+0x105/0x1d0 net/socket.c:2356 __do_sys_sendmsg net/socket.c:2365 [inline] __se_sys_sendmsg net/socket.c:2363 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2363 do_syscall_64+0xfd/0x6a0 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4598e9 Code: fd b7 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 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fd8e2f2bc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fd8e2f2bc90 RCX: 00000000004598e9 RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd8e2f2c6d4 R13: 00000000004c77fb R14: 00000000004dd098 R15: 0000000000000005 Modules linked in: ---[ end trace 29081f0a39c63b85 ]--- RIP: 0010:qdisc_put+0x25/0x90 net/sched/sch_generic.c:983 Code: 00 00 00 00 00 55 48 89 e5 41 54 49 89 fc 53 e8 61 42 bf 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 04 3c 03 7e 54 41 8b 5c 24 10 31 ff 83 e3 01 RSP: 0018:ffff8880575d7488 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffff888062547440 RCX: ffffc90005f45000 RDX: 0000000000000002 RSI: ffffffff85b3328f RDI: 0000000000000010 RBP: ffff8880575d7498 R08: ffff88805e1dc040 R09: fffffbfff11cae67 R10: fffffbfff11cae66 R11: ffffffff88e57333 R12: 0000000000000000 R13: ffff888062547440 R14: ffff8880912a8640 R15: ffff88806254747c FS: 00007fd8e2f2c700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000001beb7d0 CR3: 0000000055315000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400