9pnet_virtio: no channels available for device ./file0 ================================================================== BUG: KASAN: wild-memory-access on address ffe7087637e84000 Read of size 4060 by task syz-executor1/17372 CPU: 1 PID: 17372 Comm: syz-executor1 Not tainted 4.9.52-g9b2b081 #55 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801acfff9e8 ffffffff81d93149 ffe7087637e84000 0000000000000fdc 0000000000000000 ffff8801ac367720 ffe7087637e84000 ffff8801acfffa70 ffffffff8153d08f 0000000000000000 0000000000000001 ffffffff826648db Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 [] kasan_report_error mm/kasan/report.c:284 [inline] [] kasan_report.part.1+0x40f/0x500 mm/kasan/report.c:309 [] kasan_report+0x20/0x30 mm/kasan/report.c:296 [] check_memory_region_inline mm/kasan/kasan.c:308 [inline] [] check_memory_region+0x137/0x190 mm/kasan/kasan.c:315 [] kasan_check_read+0x11/0x20 mm/kasan/kasan.c:320 [] __copy_to_user arch/x86/include/asm/uaccess_64.h:182 [inline] [] sg_read_oxfer drivers/scsi/sg.c:1978 [inline] [] sg_read+0x124b/0x1400 drivers/scsi/sg.c:520 [] do_loop_readv_writev.part.17+0x141/0x1e0 fs/read_write.c:714 [] do_loop_readv_writev fs/read_write.c:880 [inline] [] do_readv_writev+0x520/0x750 fs/read_write.c:874 [] vfs_readv+0x84/0xc0 fs/read_write.c:898 [] do_readv+0xe6/0x250 fs/read_write.c:924 [] SYSC_readv fs/read_write.c:1011 [inline] [] SyS_readv+0x27/0x30 fs/read_write.c:1008 [] entry_SYSCALL_64_fastpath+0x23/0xc6 ================================================================== binder_alloc: binder_alloc_mmap_handler: 17352 2007d000-2007e000 already mapped failed -16 sg_write: data in/out 34319/34 bytes for SCSI command 0xfc-- guessing data in; program syz-executor1 not setting count and/or reply_len properly IPVS: Creating netns size=2536 id=35 device syz0 entered promiscuous mode IPVS: Creating netns size=2536 id=36 IPVS: length: 24 != 8 device gre0 entered promiscuous mode SELinux: unrecognized netlink message: protocol=4 nlmsg_type=798 sclass=netlink_tcpdiag_socket pig=17651 comm=syz-executor4 SELinux: unrecognized netlink message: protocol=4 nlmsg_type=798 sclass=netlink_tcpdiag_socket pig=17663 comm=syz-executor4 SELinux: unrecognized netlink message: protocol=6 nlmsg_type=3131 sclass=netlink_xfrm_socket pig=17675 comm=syz-executor2 SELinux: unrecognized netlink message: protocol=6 nlmsg_type=3131 sclass=netlink_xfrm_socket pig=17675 comm=syz-executor2 nla_parse: 9 callbacks suppressed netlink: 4 bytes leftover after parsing attributes in process `syz-executor0'. netlink: 4 bytes leftover after parsing attributes in process `syz-executor0'. pktgen: kernel_thread() failed for cpu 0 pktgen: Cannot create thread for cpu 0 (-4) pktgen: kernel_thread() failed for cpu 1 pktgen: Cannot create thread for cpu 1 (-4) pktgen: Initialization failed for all threads pktgen: kernel_thread() failed for cpu 0 pktgen: Cannot create thread for cpu 0 (-4) pktgen: kernel_thread() failed for cpu 1 pktgen: Cannot create thread for cpu 1 (-4) pktgen: Initialization failed for all threads 9pnet_virtio: no channels available for device ./file0 device gre0 entered promiscuous mode 9pnet_virtio: no channels available for device ./file0 program syz-executor1 is using a deprecated SCSI ioctl, please convert it to SG_IO program syz-executor1 is using a deprecated SCSI ioctl, please convert it to SG_IO netlink: 13 bytes leftover after parsing attributes in process `syz-executor2'. netlink: 13 bytes leftover after parsing attributes in process `syz-executor2'. IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready qtaguid: iface_stat: create6(lo): no inet dev IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready qtaguid: iface_stat: create6(lo): no inet dev IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready qtaguid: iface_stat: create6(lo): no inet dev netlink: 13 bytes leftover after parsing attributes in process `syz-executor7'. netlink: 13 bytes leftover after parsing attributes in process `syz-executor7'. netlink: 1 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 1 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 11 bytes leftover after parsing attributes in process `syz-executor6'. binder: 18204:18207 ioctl 2403 7fff returned -22 ALSA: seq fatal error: cannot create timer (-19) binder: 18204:18226 ioctl 2403 7fff returned -22 ALSA: seq fatal error: cannot create timer (-19) SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=18301 comm=syz-executor3 IPVS: Creating netns size=2536 id=37 binder: 18338:18344 ioctl 400454da 20517000 returned -22 IPVS: Creating netns size=2536 id=38 binder: 18338:18344 ioctl 400454da 20517000 returned -22 netlink: 8 bytes leftover after parsing attributes in process `syz-executor5'. binder: 18521:18526 ioctl 8903 20ef1ffc returned -22 tty_warn_deprecated_flags: 'syz-executor0' is using deprecated serial flags (with no effect): 00000700 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=14917 sclass=netlink_route_socket pig=18741 comm=syz-executor3 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=14917 sclass=netlink_route_socket pig=18761 comm=syz-executor3 IPVS: Creating netns size=2536 id=39 IPVS: Creating netns size=2536 id=40 9pnet_virtio: no channels available for device vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv binder: 19019:19022 ioctl 4c02 20514000 returned -22 binder: 19019:19022 ioctl c0106407 20518ff0 returned -22 binder: 19019:19022 ioctl 4c02 20514000 returned -22 binder: 19019:19027 ioctl c0106407 20518ff0 returned -22 9pnet_virtio: no channels available for device ./file0 binder: 19126:19130 ioctl c0106418 2046bfe0 returned -22 device gre0 entered promiscuous mode device syz1 left promiscuous mode blk_update_request: I/O error, dev loop0, sector 0 IPv6: Can't replace route, no match found binder: 19229:19253 ioctl 541c 20002fff returned -22 IPv6: NLM_F_CREATE should be specified when creating new route binder: 19229:19253 ioctl 40106410 20002ff0 returned -22 IPv6: Can't replace route, no match found binder: 19262:19268 ioctl 541b 20e11ffc returned -22 binder: 19229:19263 ioctl 541c 20002fff returned -22 binder: 19262:19294 ioctl 541b 20e11ffc returned -22 device lo entered promiscuous mode SELinux: unrecognized netlink message: protocol=4 nlmsg_type=32 sclass=netlink_tcpdiag_socket pig=19362 comm=syz-executor0 SELinux: unrecognized netlink message: protocol=4 nlmsg_type=32 sclass=netlink_tcpdiag_socket pig=19362 comm=syz-executor0 device lo left promiscuous mode SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=19505 comm=syz-executor0 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=19505 comm=syz-executor0 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=19505 comm=syz-executor0 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=19505 comm=syz-executor0 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=19505 comm=syz-executor0 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=19505 comm=syz-executor0 9pnet_virtio: no channels available for device ./file0 device gre0 entered promiscuous mode device gre0 left promiscuous mode 9pnet_virtio: no channels available for device ./file0 device gre0 entered promiscuous mode device gre0 left promiscuous mode FAULT_FLAG_ALLOW_RETRY missing 30 CPU: 1 PID: 19593 Comm: syz-executor4 Tainted: G B 4.9.52-g9b2b081 #55 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801cf5df9b0 ffffffff81d93149 ffff8801cf5dfc90 0000000000000000 ffff8801a9ae5f10 ffff8801cf5dfb80 ffff8801a9ae5e00 ffff8801cf5dfba8 ffffffff81660dc8 ffff8801cf5dfb00 ffffffff811c9fc7 00000001c8693067 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 [] handle_userfault+0xa48/0x1300 fs/userfaultfd.c:323 [] do_anonymous_page mm/memory.c:2747 [inline] [] handle_pte_fault mm/memory.c:3488 [inline] [] __handle_mm_fault mm/memory.c:3577 [inline] [] handle_mm_fault+0x1fd1/0x2530 mm/memory.c:3614 [] __do_page_fault+0x4eb/0xbd0 arch/x86/mm/fault.c:1397 [] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1460 [] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012 [] entry_SYSCALL_64_fastpath+0x23/0xc6 device gre0 entered promiscuous mode device gre0 left promiscuous mode device gre0 entered promiscuous mode binder: 19649:19655 ioctl 4b6a 20df7fb3 returned -22 binder: 19649:19670 ioctl 4b6a 20df7fb3 returned -22 nla_parse: 19 callbacks suppressed netlink: 8 bytes leftover after parsing attributes in process `syz-executor6'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor6'. binder_alloc: binder_alloc_mmap_handler: 19755 20000000-20400000 already mapped failed -16 IPVS: set_ctl: invalid protocol: 31912 1.136.255.255:49171 F IPVS: set_ctl: invalid protocol: 64680 1.136.255.255:61131 F netlink: 11 bytes leftover after parsing attributes in process `syz-executor4'. netlink: 11 bytes leftover after parsing attributes in process `syz-executor4'. netlink: 5 bytes leftover after parsing attributes in process `syz-executor7'. binder: 20003:20058 ioctl 8924 204ea000 returned -22 netlink: 5 bytes leftover after parsing attributes in process `syz-executor7'. IPVS: Creating netns size=2536 id=41 IPVS: Creating netns size=2536 id=42 binder: 20159:20183 ioctl 4b45 20099000 returned -22 binder: 20159:20163 ioctl 0 2052cff8 returned -22 binder: 20159:20183 ioctl 4b45 20099000 returned -22 binder: 20159:20163 ioctl 0 2052cff8 returned -22 binder: 20219:20222 ioctl 4c00 ffffffffffffffff returned -22 binder: 20219:20222 ioctl 5602 20003b34 returned -22 binder: 20219:20248 ioctl 4c00 ffffffffffffffff returned -22 binder: 20219:20255 ioctl 5602 20003b34 returned -22 tmpfs: Bad mount option q]g4G device gre0 entered promiscuous mode tmpfs: Bad mount option q]g4G tc_dump_action: action bad kind tc_dump_action: action bad kind device gre0 entered promiscuous mode TCP: request_sock_TCP: Possible SYN flooding on port 20010. Sending cookies. Check SNMP counters. netlink: 6 bytes leftover after parsing attributes in process `syz-executor2'. device syz3 entered promiscuous mode device syz7 entered promiscuous mode device syz3 left promiscuous mode device syz3 entered promiscuous mode pktgen: kernel_thread() failed for cpu 0 pktgen: Cannot create thread for cpu 0 (-4) pktgen: kernel_thread() failed for cpu 1 pktgen: Cannot create thread for cpu 1 (-4) pktgen: Initialization failed for all threads pktgen: kernel_thread() failed for cpu 0 pktgen: Cannot create thread for cpu 0 (-4) pktgen: kernel_thread() failed for cpu 1 pktgen: Cannot create thread for cpu 1 (-4) pktgen: Initialization failed for all threads netlink: 1 bytes leftover after parsing attributes in process `syz-executor6'. netlink: 1 bytes leftover after parsing attributes in process `syz-executor6'. netlink: 13 bytes leftover after parsing attributes in process `syz-executor7'. device syz2 left promiscuous mode device syz5 left promiscuous mode device syz5 entered promiscuous mode device syz5 left promiscuous mode : renamed from syz1 sock: sock_set_timeout: `syz-executor6' (pid 20757) tries to set negative timeout TCP: request_sock_TCP: Possible SYN flooding on port 20028. Sending cookies. Check SNMP counters. sock: sock_set_timeout: `syz-executor6' (pid 20737) tries to set negative timeout syz-executor7 (20750) used greatest stack depth: 24000 bytes left IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready qtaguid: iface_stat: create6(lo): no inet dev PF_BRIDGE: RTM_NEWNEIGH with invalid address PF_BRIDGE: RTM_NEWNEIGH with invalid address