================================================================================ UBSAN: Undefined behaviour in ./include/net/sch_generic.h:1051:7 shift exponent 129 is too large for 32-bit type 'int' CPU: 0 PID: 12432 Comm: syz-executor.0 Not tainted 4.19.150-syzkaller #0 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+0x22c/0x33e lib/dump_stack.c:118 ubsan_epilogue+0xe/0x3a lib/ubsan.c:161 __ubsan_handle_shift_out_of_bounds.cold+0x1c4/0x250 lib/ubsan.c:422 qdisc_l2t include/net/sch_generic.h:1051 [inline] cbq_update net/sched/sch_cbq.c:567 [inline] cbq_dequeue.cold+0x189/0x18e net/sched/sch_cbq.c:814 dequeue_skb net/sched/sch_generic.c:282 [inline] qdisc_restart net/sched/sch_generic.c:385 [inline] __qdisc_run+0x1b9/0x1680 net/sched/sch_generic.c:403 __dev_xmit_skb net/core/dev.c:3500 [inline] __dev_queue_xmit+0x15ef/0x2ec0 net/core/dev.c:3807 neigh_resolve_output+0x55a/0x950 net/core/neighbour.c:1374 neigh_output include/net/neighbour.h:501 [inline] ip6_finish_output2+0x1184/0x2370 net/ipv6/ip6_output.c:120 ip6_finish_output+0x610/0xcc0 net/ipv6/ip6_output.c:154 NF_HOOK_COND include/linux/netfilter.h:278 [inline] ip6_output+0x205/0x7c0 net/ipv6/ip6_output.c:171 dst_output include/net/dst.h:455 [inline] NF_HOOK include/linux/netfilter.h:289 [inline] ip6_xmit+0xe46/0x2110 net/ipv6/ip6_output.c:275 sctp_v6_xmit+0x38e/0x720 net/sctp/ipv6.c:229 sctp_packet_transmit+0x1c3c/0x3210 net/sctp/output.c:641 sctp_packet_singleton net/sctp/outqueue.c:792 [inline] sctp_outq_flush_ctrl.constprop.0+0x6d3/0xc50 net/sctp/outqueue.c:923 sctp_outq_flush net/sctp/outqueue.c:1205 [inline] sctp_outq_uncork+0x10b/0x200 net/sctp/outqueue.c:777 sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1815 [inline] sctp_side_effects net/sctp/sm_sideeffect.c:1199 [inline] sctp_do_sm+0x520/0x4fd0 net/sctp/sm_sideeffect.c:1170 sctp_primitive_ASSOCIATE+0x98/0xc0 net/sctp/primitive.c:88 sctp_sendmsg_to_asoc+0x7b5/0x1ef0 net/sctp/socket.c:1945 sctp_sendmsg+0xeb8/0x1530 net/sctp/socket.c:2135 inet_sendmsg+0x174/0x640 net/ipv4/af_inet.c:798 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xc7/0x130 net/socket.c:632 __sys_sendto+0x21a/0x320 net/socket.c:1787 __do_sys_sendto net/socket.c:1799 [inline] __se_sys_sendto net/socket.c:1795 [inline] __x64_sys_sendto+0xdd/0x1b0 net/socket.c:1795 do_syscall_64+0xf9/0x670 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45de59 Code: 0d 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 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fdff664dc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 000000000002e8c0 RCX: 000000000045de59 RDX: 0000000000034000 RSI: 00000000200001c0 RDI: 0000000000000003 RBP: 000000000118bf78 R08: 0000000020000000 R09: 000000000000001c R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bf2c R13: 00007ffc8de93bef R14: 00007fdff664e9c0 R15: 000000000118bf2c ================================================================================ netlink: 24 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 'syz-executor.2': attribute type 1 has an invalid length. bond15 (uninitialized): Released all slaves netlink: 4 bytes leftover after parsing attributes in process `syz-executor.2'. bond11: Enslaving bridge63 as an active interface with a down link netlink: 12 bytes leftover after parsing attributes in process `syz-executor.1'. IPVS: ftp: loaded support on port[0] = 21 netlink: 'syz-executor.2': attribute type 1 has an invalid length. bond15 (uninitialized): Released all slaves netlink: 4 bytes leftover after parsing attributes in process `syz-executor.2'. bond11: Enslaving bridge64 as an active interface with a down link IPVS: ftp: loaded support on port[0] = 21 audit: type=1400 audit(1602825789.457:17): avc: denied { block_suspend } for pid=12548 comm="syz-executor.3" capability=36 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 netlink: 'syz-executor.2': attribute type 1 has an invalid length. bond15: making interface bridge66 the new active one bond15: Enslaving bridge66 as an active interface with an up link bond15 (unregistering): Releasing active interface bridge66 bond15 (unregistering): Released all slaves netlink: 'syz-executor.2': attribute type 1 has an invalid length. bond15: making interface bridge67 the new active one bond15: Enslaving bridge67 as an active interface with an up link bond15 (unregistering): Releasing active interface bridge67 bond15 (unregistering): Released all slaves nla_parse: 13 callbacks suppressed netlink: 12 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.5'. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.5'. netlink: 'syz-executor.2': attribute type 1 has an invalid length. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.1'. bond15: making interface bridge68 the new active one bond15: Enslaving bridge68 as an active interface with an up link bond15 (unregistering): Releasing active interface bridge68 bond15 (unregistering): Released all slaves netlink: 16 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 'syz-executor.2': attribute type 1 has an invalid length. bond15 (uninitialized): Released all slaves netlink: 4 bytes leftover after parsing attributes in process `syz-executor.2'. bond11: Enslaving bridge69 as an active interface with a down link netlink: 16 bytes leftover after parsing attributes in process `syz-executor.1'. EXT4-fs (loop5): mounting ext2 file system using the ext4 subsystem EXT4-fs (loop5): warning: mounting unchecked fs, running e2fsck is recommended netlink: 16 bytes leftover after parsing attributes in process `syz-executor.1'. EXT4-fs (loop5): failed to initialize system zone (-117) netlink: 'syz-executor.2': attribute type 1 has an invalid length. EXT4-fs (loop5): mount failed bond15 (uninitialized): Released all slaves netlink: 4 bytes leftover after parsing attributes in process `syz-executor.2'. bond11: Enslaving bridge71 as an active interface with a down link EXT4-fs (loop5): mounting ext2 file system using the ext4 subsystem EXT4-fs (loop5): warning: mounting unchecked fs, running e2fsck is recommended EXT4-fs (loop5): failed to initialize system zone (-117) EXT4-fs (loop5): mount failed netlink: 12 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 'syz-executor.2': attribute type 1 has an invalid length. bond15 (uninitialized): Released all slaves bond11: Enslaving bridge73 as an active interface with a down link netlink: 'syz-executor.2': attribute type 1 has an invalid length. bond15 (uninitialized): Released all slaves bond11: Enslaving bridge75 as an active interface with a down link netlink: 'syz-executor.2': attribute type 1 has an invalid length. bond15 (uninitialized): Released all slaves bond11: Enslaving bridge77 as an active interface with a down link netlink: 'syz-executor.2': attribute type 1 has an invalid length. bond15 (uninitialized): Released all slaves bond11: Enslaving bridge79 as an active interface with a down link netlink: 'syz-executor.2': attribute type 1 has an invalid length. netlink: 'syz-executor.2': attribute type 1 has an invalid length. device lo entered promiscuous mode device lo left promiscuous mode device lo entered promiscuous mode device lo left promiscuous mode netlink: 'syz-executor.2': attribute type 1 has an invalid length.