================================================================================ UBSAN: Undefined behaviour in net/sched/sch_api.c:569:10 shift exponent 92 is too large for 32-bit type 'int' CPU: 0 PID: 11377 Comm: syz-executor.2 Not tainted 4.19.148-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_calculate_pkt_len+0x370/0x570 net/sched/sch_api.c:569 qdisc_calculate_pkt_len include/net/sch_generic.h:697 [inline] __dev_xmit_skb net/core/dev.c:3443 [inline] __dev_queue_xmit+0x1372/0x2ec0 net/core/dev.c:3807 br_dev_queue_push_xmit+0x25a/0x6c0 net/bridge/br_forward.c:56 NF_HOOK include/linux/netfilter.h:289 [inline] br_forward_finish+0xb5/0x430 net/bridge/br_forward.c:69 NF_HOOK include/linux/netfilter.h:289 [inline] __br_forward+0x693/0xbb0 net/bridge/br_forward.c:113 deliver_clone net/bridge/br_forward.c:129 [inline] maybe_deliver+0x2d2/0x3c0 net/bridge/br_forward.c:184 br_flood+0x180/0x4f0 net/bridge/br_forward.c:226 br_dev_xmit+0xdd0/0x1510 net/bridge/br_device.c:103 __netdev_start_xmit include/linux/netdevice.h:4333 [inline] netdev_start_xmit include/linux/netdevice.h:4347 [inline] xmit_one net/core/dev.c:3256 [inline] dev_hard_start_xmit+0x1a8/0x960 net/core/dev.c:3272 __dev_queue_xmit+0x276a/0x2ec0 net/core/dev.c:3838 neigh_hh_output include/net/neighbour.h:491 [inline] neigh_output include/net/neighbour.h:499 [inline] ip6_finish_output2+0xe78/0x2370 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] ndisc_send_skb+0xa6b/0x1860 net/ipv6/ndisc.c:491 ndisc_send_rs+0x131/0x6a0 net/ipv6/ndisc.c:685 addrconf_rs_timer+0x2d9/0x640 net/ipv6/addrconf.c:3834 call_timer_fn+0x177/0x760 kernel/time/timer.c:1338 expire_timers+0x243/0x500 kernel/time/timer.c:1375 __run_timers kernel/time/timer.c:1703 [inline] run_timer_softirq+0x259/0x730 kernel/time/timer.c:1716 __do_softirq+0x27d/0xad2 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x22d/0x270 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:544 [inline] smp_apic_timer_interrupt+0x15f/0x5d0 arch/x86/kernel/apic/apic.c:1094 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894 RIP: 0033:0x41527a Code: 48 81 c4 80 00 00 00 4d 8d b5 c0 02 00 00 4c 89 f0 4c 89 b5 38 ff ff ff 48 83 c8 01 48 89 05 2d 01 29 01 48 8b 05 f6 6b 33 00 <49> c7 85 c8 02 00 00 70 be 74 00 49 89 85 c0 02 00 00 4c 89 70 08 RSP: 002b:00007ffde87690f0 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13 RAX: 00007efc99d6d9c0 RBX: 0000000000020000 RCX: 00000000ffffffe0 RDX: 0000000000000040 RSI: 0000000000000001 RDI: 00007efc99d4c6a0 RBP: 00007ffde87691d0 R08: 000000000074d7e0 R09: 000000000074d7e0 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffde87692d0 R13: 00007efc99d4c700 R14: 00007efc99d4c9c0 R15: 000000000118bfd4 ================================================================================ audit: type=1400 audit(1601340021.476:28): avc: denied { lock } for pid=11416 comm="syz-executor.3" path="socket:[38668]" dev="sockfs" ino=38668 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=dccp_socket permissive=1 nf_conntrack: default automatic helper assignment has been turned off for security reasons and CT-based firewall rule not found. Use the iptables CT target to attach helpers instead. binder_alloc: binder_alloc_mmap_handler: 11439 20002000-20004000 already mapped failed -16 binder_alloc: binder_alloc_mmap_handler: 11459 20002000-20004000 already mapped failed -16 binder_alloc: binder_alloc_mmap_handler: 11479 20002000-20004000 already mapped failed -16 binder_alloc: binder_alloc_mmap_handler: 11490 20002000-20004000 already mapped failed -16 nla_parse: 2 callbacks suppressed netlink: 6 bytes leftover after parsing attributes in process `syz-executor.3'. ntfs: (device loop4): parse_ntfs_boot_sector(): Sector size (256) is smaller than the device block size (512). This is not supported. Sorry. ntfs: (device loop4): ntfs_fill_super(): Unsupported NTFS filesystem. netlink: 6 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 6 bytes leftover after parsing attributes in process `syz-executor.3'. ntfs: (device loop4): parse_ntfs_boot_sector(): Sector size (256) is smaller than the device block size (512). This is not supported. Sorry. netlink: 6 bytes leftover after parsing attributes in process `syz-executor.3'. ntfs: (device loop4): ntfs_fill_super(): Unsupported NTFS filesystem. netlink: 6 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 6 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 6 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 6 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.4'. EXT4-fs: Invalid sb specification: sb=0x0000000000000000",errors=continue EXT4-fs (loop1): VFS: Can't find ext4 filesystem nf_conntrack: default automatic helper assignment has been turned off for security reasons and CT-based firewall rule not found. Use the iptables CT target to attach helpers instead. capability: warning: `syz-executor.3' uses deprecated v2 capabilities in a way that may be insecure overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off. overlayfs: maximum fs stacking depth exceeded overlayfs: filesystem on './bus' not supported as upperdir