===================================== [ BUG: bad unlock balance detected! ] 4.9.67-gf26d3c7 #106 Not tainted ------------------------------------- syz-executor7/23478 is trying to release lock ([ 193.700499] device gre0 entered promiscuous mode mrt_lock) at: but there are no more locks to release! other info that might help us debug this: 1 lock held by syz-executor7/23478: #0: [ 193.732441] SELinux: unrecognized netlink message: protocol=0 nlmsg_type=21818 sclass=netlink_route_socket pig=23495 comm=syz-executor0 (&p->lock){+.+.+.}, at: [] seq_read+0xdd/0x1290 fs/seq_file.c:178 stack backtrace: CPU: 1 PID: 23478 Comm: syz-executor7 Not tainted 4.9.67-gf26d3c7 #106 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=21818 sclass=netlink_route_socket pig=23495 comm=syz-executor0 ffff8801d612f8e8 ffffffff81d906e9 ffffffff849ae8f8 ffff8801d60f0000 ffffffff834dec54 ffffffff849ae8f8 ffff8801d60f0888 ffff8801d612f918 ffffffff812353f4 dffffc0000000000 ffffffff849ae8f8 00000000ffffffff Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 [] print_unlock_imbalance_bug+0x174/0x1a0 kernel/locking/lockdep.c:3398 [] __lock_release kernel/locking/lockdep.c:3540 [inline] [] lock_release+0x6f8/0xb80 kernel/locking/lockdep.c:3775 [] __raw_read_unlock include/linux/rwlock_api_smp.h:225 [inline] [] _raw_read_unlock+0x1a/0x50 kernel/locking/spinlock.c:255 [] ipmr_mfc_seq_stop+0xe4/0x140 net/ipv6/ip6mr.c:553 [] seq_read+0xa83/0x1290 fs/seq_file.c:283 [] proc_reg_read+0xef/0x170 fs/proc/inode.c:202 [] 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 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=31526 sclass=netlink_route_socket pig=23583 comm=syz-executor5 PF_BRIDGE: RTM_NEWNEIGH with invalid ifindex SELinux: unrecognized netlink message: protocol=0 nlmsg_type=31526 sclass=netlink_route_socket pig=23583 comm=syz-executor5 PF_BRIDGE: RTM_NEWNEIGH with invalid ifindex netlink: 2 bytes leftover after parsing attributes in process `syz-executor6'. device gre0 entered promiscuous mode device gre0 left promiscuous mode device gre0 entered promiscuous mode IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready qtaguid: iface_stat: create6(lo): no inet dev device lo left promiscuous mode SELinux: unrecognized netlink message: protocol=6 nlmsg_type=3131 sclass=netlink_xfrm_socket pig=23702 comm=syz-executor6 SELinux: unrecognized netlink message: protocol=6 nlmsg_type=3131 sclass=netlink_xfrm_socket pig=23709 comm=syz-executor6 device lo entered promiscuous mode qtaguid: iface_stat: create(lo): no inet dev qtaguid: iface_stat: create6(lo): no inet dev IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready qtaguid: iface_stat: create6(lo): no inet dev device lo left promiscuous mode qtaguid: iface_stat: create(lo): no inet dev 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 device gre0 entered promiscuous mode device eql entered promiscuous mode rfkill: input handler disabled rfkill: input handler enabled binder: 23972:23973 ioctl 85 20416000 returned -22 binder: 23972:23973 ioctl c018620b 20236fe8 returned -14 binder: 23972:23973 IncRefs 0 refcount change on invalid ref 2 ret -22 binder: 23972:23973 Acquire 1 refcount change on invalid ref 4 ret -22 binder: 23972:23973 Acquire 1 refcount change on invalid ref 0 ret -22 binder: 23972:23973 unknown command 0 binder: 23972:23973 ioctl c0306201 20000fd0 returned -22 binder: 23972:23990 ioctl 85 20416000 returned -22 binder: 23996:23999 not enough space to store 7 fds in buffer binder: 23972:23990 ioctl c018620b 20236fe8 returned -14 binder: 23972:23990 unknown command 0 binder: 23972:23990 ioctl c0306201 20000fd0 returned -22 binder: 23996:23999 transaction failed 29201/-22, size 72-24 line 3272 binder_alloc: binder_alloc_mmap_handler: 23996 20000000-20002000 already mapped failed -16 binder: BINDER_SET_CONTEXT_MGR already set binder: 23996:24008 ioctl 40046207 0 returned -16 binder_alloc: 23996: binder_alloc_buf, no vma binder: 23996:23999 transaction failed 29189/-3, size 72-24 line 3130 binder: 24062:24064 BC_FREE_BUFFER u0000000000000000 no match IPVS: Creating netns size=2536 id=26 binder: 24062:24064 unknown command 796288356 binder: 24062:24064 ioctl c0306201 20002fd0 returned -22 device gre0 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 binder: 24157:24166 got transaction to invalid handle binder: 24157:24166 transaction failed 29201/-22, size 0-0 line 3007 binder: 24157:24179 got transaction to invalid handle device lo entered promiscuous mode binder: 24157:24179 transaction failed 29201/-22, size 0-0 line 3007 qtaguid: iface_stat: create(lo): no inet dev qtaguid: iface_stat: create6(lo): no inet dev IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready qtaguid: iface_stat: create6(lo): no inet dev binder: undelivered TRANSACTION_ERROR: 29201 binder: undelivered TRANSACTION_ERROR: 29201 binder: 24233:24238 got transaction to invalid handle binder: 24233:24238 transaction failed 29201/-22, size 0-0 line 3007 binder: 24233:24269 got transaction to invalid handle binder: 24233:24269 transaction failed 29201/-22, size 0-0 line 3007 IPVS: Creating netns size=2536 id=27 IPv6: Can't replace route, no match found IPv6: Can't replace route, no match found binder: undelivered TRANSACTION_ERROR: 29201 binder: undelivered TRANSACTION_ERROR: 29201 SELinux: unrecognized netlink message: protocol=4 nlmsg_type=13491 sclass=netlink_tcpdiag_socket pig=24344 comm=syz-executor4 device syz6 entered promiscuous mode selinux_nlmsg_perm: 4 callbacks suppressed SELinux: unrecognized netlink message: protocol=6 nlmsg_type=39973 sclass=netlink_xfrm_socket pig=24443 comm=syz-executor2 SELinux: unrecognized netlink message: protocol=6 nlmsg_type=39973 sclass=netlink_xfrm_socket pig=24463 comm=syz-executor2 nla_parse: 18 callbacks suppressed netlink: 2 bytes leftover after parsing attributes in process `syz-executor7'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor0'. netlink: 2 bytes leftover after parsing attributes in process `syz-executor7'. handle_userfault: 2 callbacks suppressed FAULT_FLAG_ALLOW_RETRY missing 30 FAULT_FLAG_ALLOW_RETRY missing 70 CPU: 0 PID: 24667 Comm: syz-executor2 Not tainted 4.9.67-gf26d3c7 #106 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801cfa17ae0 ffffffff81d906e9 ffff8801cfa17dc0 0000000000000000 ffff8801cca22e90 ffff8801cfa17cb0 ffff8801cca22d80 ffff8801cfa17cd8 ffffffff8165e307 ffff8801d8d68000 ffff8801cfa17c30 00000001d064e067 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 [] handle_userfault+0xa37/0x1300 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+0x5c2/0xd40 arch/x86/mm/fault.c:1406 [] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1469 [] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012 FAULT_FLAG_ALLOW_RETRY missing 30 CPU: 0 PID: 24656 Comm: syz-executor2 Not tainted 4.9.67-gf26d3c7 #106 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801cace7500 ffffffff81d906e9 ffff8801cace77e0 0000000000000000 ffff8801cca22e90 ffff8801cace76d0 ffff8801cca22d80 ffff8801cace76f8 ffffffff8165e307 0000000000000000 ffff8801cace7650 00000001d064e067 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 [] handle_userfault+0xa37/0x1300 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+0x5c2/0xd40 arch/x86/mm/fault.c:1406 [] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1469 [] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012 [] process_vm_rw_pages mm/process_vm_access.c:49 [inline] [] process_vm_rw_single_vec mm/process_vm_access.c:119 [inline] [] process_vm_rw_core.isra.3+0x537/0xa70 mm/process_vm_access.c:218 [] process_vm_rw+0x1f0/0x210 mm/process_vm_access.c:285 [] SYSC_process_vm_writev mm/process_vm_access.c:307 [inline] [] SyS_process_vm_writev+0x47/0x60 mm/process_vm_access.c:302 [] entry_SYSCALL_64_fastpath+0x23/0xc6 binder: 24694:24695 ioctl 2403 ffff returned -22 binder: 24694:24695 ioctl 8004e500 20005000 returned -22 binder: undelivered death notification, 0000000000000000 binder: 24694:24695 ioctl 2403 ffff returned -22 binder: BINDER_SET_CONTEXT_MGR already set binder: 24694:24697 ioctl 40046207 0 returned -16 binder: 24694:24695 ioctl 8004e500 20005000 returned -22 netlink: 1 bytes leftover after parsing attributes in process `syz-executor1'. binder: 24694:24697 BC_CLEAR_DEATH_NOTIFICATION invalid ref 0 netlink: 1 bytes leftover after parsing attributes in process `syz-executor1'. CPU: 0 PID: 24675 Comm: syz-executor2 Not tainted 4.9.67-gf26d3c7 #106 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801d05df8b0 ffffffff81d906e9 ffff8801d05dfb90 0000000000000000 ffff8801cca22e90 ffff8801d05dfa80 ffff8801cca22d80 ffff8801d05dfaa8 ffffffff8165e307 ffffffff838981d3 ffff8801d05dfa00 00000001d064e067 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 [] handle_userfault+0xa37/0x1300 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+0x5c2/0xd40 arch/x86/mm/fault.c:1406 [] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1469 [] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012 [] entry_SYSCALL_64_fastpath+0x23/0xc6 binder: 24789 RLIMIT_NICE not set binder: release 24788:24789 transaction 357 out, still active binder: undelivered TRANSACTION_COMPLETE binder_alloc: binder_alloc_mmap_handler: 24788 20000000-20002000 already mapped failed -16 binder: BINDER_SET_CONTEXT_MGR already set binder: 24788:24792 ioctl 40046207 0 returned -16 binder_alloc: 24788: binder_alloc_buf, no vma binder: 24788:24792 transaction failed 29189/-3, size 0-0 line 3130 binder_alloc: 24788: binder_alloc_buf, no vma binder: 24788:24792 transaction failed 29189/-3, size 0-0 line 3130 binder: release 24788:24789 transaction 358 out, still active binder: release 24788:24789 transaction 357 in, still active binder: undelivered TRANSACTION_COMPLETE binder: undelivered TRANSACTION_ERROR: 29189 binder: send failed reply for transaction 358, target dead binder: send failed reply for transaction 357, target dead binder: undelivered TRANSACTION_ERROR: 29189 device lo left promiscuous mode netlink: 2 bytes leftover after parsing attributes in process `syz-executor0'. IPv6: RTM_NEWROUTE with no NLM_F_CREATE or NLM_F_REPLACE IPv6: NLM_F_CREATE should be set when creating new route IPv6: NLM_F_CREATE should be set when creating new route device gre0 entered promiscuous mode device lo entered promiscuous mode qtaguid: iface_stat: create(lo): no inet dev qtaguid: iface_stat: create6(lo): no inet dev IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready qtaguid: iface_stat: create6(lo): no inet dev device lo left promiscuous mode netlink: 1 bytes leftover after parsing attributes in process `syz-executor1'. SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=24883 comm=syz-executor1 device lo entered promiscuous mode qtaguid: iface_stat: create(lo): no inet dev 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: 3 bytes leftover after parsing attributes in process `syz-executor0'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor0'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor0'. IPVS: Creating netns size=2536 id=28 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 binder: 25140:25142 ERROR: BC_REGISTER_LOOPER called without request binder: undelivered transaction 362, process died. binder_alloc: binder_alloc_mmap_handler: 25140 20000000-20002000 already mapped failed -16 binder: BINDER_SET_CONTEXT_MGR already set binder: 25140:25153 ioctl 40046207 0 returned -16 binder: 25140:25153 ERROR: BC_REGISTER_LOOPER called without request binder_alloc: 25140: binder_alloc_buf, no vma binder: 25140:25142 transaction failed 29189/-3, size 0-0 line 3130 SELinux: unrecognized netlink message: protocol=6 nlmsg_type=0 sclass=netlink_xfrm_socket pig=25236 comm=syz-executor7 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=25236 comm=syz-executor7 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=25256 comm=syz-executor7 SELinux: unrecognized netlink message: protocol=6 nlmsg_type=0 sclass=netlink_xfrm_socket pig=25256 comm=syz-executor7 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=202 sclass=netlink_route_socket pig=25256 comm=syz-executor7 SELinux: unrecognized netlink message: protocol=6 nlmsg_type=0 sclass=netlink_xfrm_socket pig=25256 comm=syz-executor7 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=25267 comm=syz-executor7 IPVS: Creating netns size=2536 id=29 device gre0 entered promiscuous mode device gre0 left promiscuous mode device gre0 entered promiscuous mode Can not set IPV6_FL_F_REFLECT if flowlabel_consistency sysctl is enable Can not set IPV6_FL_F_REFLECT if flowlabel_consistency sysctl is enable 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 device gre0 entered promiscuous mode 9pnet_virtio: no channels available for device H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H 9pnet_virtio: no channels available for device H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H¨H FAULT_FLAG_ALLOW_RETRY missing 30 CPU: 0 PID: 25518 Comm: syz-executor6 Not tainted 4.9.67-gf26d3c7 #106 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801c7bc7850 ffffffff81d906e9 ffff8801c7bc7b30 0000000000000000 ffff8801d08dd910 ffff8801c7bc7a20 ffff8801d08dd800 ffff8801c7bc7a48 ffffffff8165e307 ffffffff838a9178 ffff8801c7bc79a0 00000001a7e2f067 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 [] handle_userfault+0xa37/0x1300 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+0x5c2/0xd40 arch/x86/mm/fault.c:1406 [] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1469 [] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012 [] do_fcntl fs/fcntl.c:284 [inline] [] SYSC_fcntl fs/fcntl.c:372 [inline] [] SyS_fcntl+0x81c/0xc70 fs/fcntl.c:357 [] entry_SYSCALL_64_fastpath+0x23/0xc6 FAULT_FLAG_ALLOW_RETRY missing 30 CPU: 0 PID: 25588 Comm: syz-executor6 Not tainted 4.9.67-gf26d3c7 #106 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801d864f850 ffffffff81d906e9 ffff8801d864fb30 0000000000000000 ffff8801cca23610 ffff8801d864fa20 ffff8801cca23500 ffff8801d864fa48 ffffffff8165e307 ffff8801c6d11800 0000000000000000 0000000000000000 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 [] handle_userfault+0xa37/0x1300 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+0x5c2/0xd40 arch/x86/mm/fault.c:1406 [] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1469 [] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012 [] do_fcntl fs/fcntl.c:284 [inline] [] SYSC_fcntl fs/fcntl.c:372 [inline] [] SyS_fcntl+0x81c/0xc70 fs/fcntl.c:357 [] entry_SYSCALL_64_fastpath+0x23/0xc6 selinux_nlmsg_perm: 3 callbacks suppressed SELinux: unrecognized netlink message: protocol=4 nlmsg_type=0 sclass=netlink_tcpdiag_socket pig=25628 comm=syz-executor7 nla_parse: 13 callbacks suppressed netlink: 8 bytes leftover after parsing attributes in process `syz-executor0'. binder: BINDER_SET_CONTEXT_MGR already set binder: 25621:25627 ioctl 40046207 0 returned -16 netlink: 8 bytes leftover after parsing attributes in process `syz-executor0'. binder_alloc: 25621: binder_alloc_buf, no vma binder: 25621:25627 transaction failed 29189/-3, size 0-0 line 3130 binder: undelivered TRANSACTION_ERROR: 29189 binder: release 25621:25627 transaction 365 out, still active binder: undelivered TRANSACTION_COMPLETE binder: send failed reply for transaction 365, target dead netlink: 5 bytes leftover after parsing attributes in process `syz-executor2'. netlink: 5 bytes leftover after parsing attributes in process `syz-executor2'. sg_write: data in/out 327644/32 bytes for SCSI command 0x4-- guessing data in; program syz-executor7 not setting count and/or reply_len properly FAULT_FLAG_ALLOW_RETRY missing 30 FAULT_FLAG_ALLOW_RETRY missing 30 CPU: 0 PID: 25786 Comm: syz-executor0 Not tainted 4.9.67-gf26d3c7 #106 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801a7147740 ffffffff81d906e9 ffff8801a7147a20 0000000000000000 ffff8801cca23010 ffff8801a7147910 ffff8801cca22f00 ffff8801a7147938 ffffffff8165e307 ffff8801a7147798 ffff8801a7147890 00000001c7520067 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 [] handle_userfault+0xa37/0x1300 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+0x5c2/0xd40 arch/x86/mm/fault.c:1406 [] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1469 [] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012 [] do_fcntl fs/fcntl.c:274 [inline] [] SYSC_fcntl fs/fcntl.c:372 [inline] [] SyS_fcntl+0x8fd/0xc70 fs/fcntl.c:357 [] entry_SYSCALL_64_fastpath+0x23/0xc6 FAULT_FLAG_ALLOW_RETRY missing 30 CPU: 0 PID: 25766 Comm: syz-executor0 Not tainted 4.9.67-gf26d3c7 #106 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801a693f630 ffffffff81d906e9 ffff8801a693f910 0000000000000000 ffff8801cca23010 ffff8801a693f800 ffff8801cca22f00 ffff8801a693f828 ffffffff8165e307 1ffff10034d27eca ffff8801a693f780 00000001c7520067 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 [] handle_userfault+0xa37/0x1300 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+0x5c2/0xd40 arch/x86/mm/fault.c:1406 [] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1469 [] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012 [] 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