9pnet_virtio: no channels available for device ./file0 keychord: invalid keycode count 0 ===================================== 9pnet_virtio: no channels available for device ./file0 [ BUG: bad unlock balance detected! ] 4.9.67-gf26d3c7 #106 Not tainted ------------------------------------- syz-executor2/19008 is trying to release lock ([ 122.618146] FAULT_FLAG_ALLOW_RETRY missing 30 CPU: 1 PID: 18977 Comm: syz-executor6 Not tainted 4.9.67-gf26d3c7 #106 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801c6a0f9a0 ffffffff81d906e9 ffff8801c6a0fc80 0000000000000000 ffff8801ce6a6590 ffff8801c6a0fb70 ffff8801ce6a6480 ffff8801c6a0fb98 ffffffff8165e307 0000000000000282 ffff8801c6a0faf0 00000001cf9f1067Call 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 [] SYSC_sigaltstack kernel/signal.c:3170 [inline] [] SyS_sigaltstack+0x6c/0x90 kernel/signal.c:3168 [] entry_SYSCALL_64_fastpath+0x23/0xc6 sock: sock_set_timeout: `syz-executor0' (pid 19051) tries to set negative timeout mrt_lock) at: but there are no more locks to release! other info that might help us debug this: 2 locks held by syz-executor2/19008: #0: (&f->f_pos_lock){+.+.+.}, at: [] __fdget_pos+0x9f/0xc0 fs/file.c:781 #1: (&p->lock){+.+.+.}, at: [] seq_read+0xdd/0x1290 fs/seq_file.c:178 stack backtrace: CPU: 0 PID: 19008 Comm: syz-executor2 Not tainted 4.9.67-gf26d3c7 #106 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801d9b1f8e8 ffffffff81d906e9 ffffffff849ae8f8 ffff8801d531c800 ffffffff834dec54 ffffffff849ae8f8 ffff8801d531d088 ffff8801d9b1f918 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 loop_reread_partitions: partition scan of loop0 () failed (rc=-13) rfkill: input handler disabled rfkill: input handler enabled rfkill: input handler disabled rfkill: input handler enabled binder: BINDER_SET_CONTEXT_MGR already set binder: 19175:19176 ioctl 40046207 0 returned -16 device gre0 entered promiscuous mode nla_parse: 7 callbacks suppressed netlink: 8 bytes leftover after parsing attributes in process `syz-executor3'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor3'. IPVS: Creating netns size=2536 id=29 netlink: 2 bytes leftover after parsing attributes in process `syz-executor5'. netlink: 2 bytes leftover after parsing attributes in process `syz-executor5'. FAULT_FLAG_ALLOW_RETRY missing 30 CPU: 0 PID: 19331 Comm: syz-executor4 Not tainted 4.9.67-gf26d3c7 #106 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801c4ddf4e0 ffffffff81d906e9 ffff8801c4ddf7c0 0000000000000000 ffff8801c9328590 ffff8801c4ddf6b0 ffff8801c9328480 ffff8801c4ddf6d8 ffffffff8165e307 ffff880102408040 ffff8801c4ddf630 00000001a4cc6067 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 [] generic_perform_write+0x1dc/0x500 mm/filemap.c:2731 [] __generic_file_write_iter+0x348/0x570 mm/filemap.c:2866 [] generic_file_write_iter+0x2d5/0x600 mm/filemap.c:2894 [] new_sync_write fs/read_write.c:499 [inline] [] __vfs_write+0x4bf/0x680 fs/read_write.c:512 [] vfs_write+0x189/0x530 fs/read_write.c:560 [] SYSC_write fs/read_write.c:607 [inline] [] SyS_write+0xd9/0x1b0 fs/read_write.c:599 [] entry_SYSCALL_64_fastpath+0x23/0xc6 FAULT_FLAG_ALLOW_RETRY missing 30 CPU: 0 PID: 19343 Comm: syz-executor4 Not tainted 4.9.67-gf26d3c7 #106 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801d4f5f4e0 ffffffff81d906e9 ffff8801d4f5f7c0 0000000000000000 ffff8801ce6a7010 ffff8801d4f5f6b0 ffff8801ce6a6f00 ffff8801d4f5f6d8 ffffffff8165e307 0000000000000046 ffff8801d4f5f630 00000001a7f1e067 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 [] generic_perform_write+0x1dc/0x500 mm/filemap.c:2731 [] __generic_file_write_iter+0x348/0x570 mm/filemap.c:2866 [] generic_file_write_iter+0x2d5/0x600 mm/filemap.c:2894 [] new_sync_write fs/read_write.c:499 [inline] [] __vfs_write+0x4bf/0x680 fs/read_write.c:512 [] vfs_write+0x189/0x530 fs/read_write.c:560 [] SYSC_write fs/read_write.c:607 [inline] [] SyS_write+0xd9/0x1b0 fs/read_write.c:599 [] entry_SYSCALL_64_fastpath+0x23/0xc6 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: 19400:19404 ERROR: BC_REGISTER_LOOPER called without request netlink: 8 bytes leftover after parsing attributes in process `syz-executor3'. device lo entered promiscuous mode netlink: 8 bytes leftover after parsing attributes in process `syz-executor3'. binder: 19400:19414 BC_DEAD_BINDER_DONE 0000000000000000 not found binder: 19400:19414 got reply transaction with no transaction stack binder: 19400:19414 transaction failed 29201/-71, size 48-16 line 2923 binder: 19400:19404 ERROR: BC_REGISTER_LOOPER called without request binder: 19400:19414 BC_DEAD_BINDER_DONE 0000000000000000 not found binder: 19400:19414 got reply transaction with no transaction stack binder: 19400:19414 transaction failed 29201/-71, size 48-16 line 2923 device gre0 entered promiscuous mode IPv6: ADDRCONF(NETDEV_UP): gre0: link is not ready 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 gre0 entered promiscuous mode IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready qtaguid: iface_stat: create6(lo): no inet dev FAULT_FLAG_ALLOW_RETRY missing 30 FAULT_FLAG_ALLOW_RETRY missing 20 CPU: 1 PID: 19622 Comm: syz-executor3 Not tainted 4.9.67-gf26d3c7 #106 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801cdb672d8 ffffffff81d906e9 ffff8801cdb675b8 0000000000000000 ffff8801c9329910 ffff8801cdb674a8 ffff8801c9329800 ffff8801cdb674d0 ffffffff8165e307 0000000000000000 ffff8801cdb67428 00000001ccd68067 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 [] faultin_page mm/gup.c:386 [inline] [] __get_user_pages+0x39a/0x1010 mm/gup.c:585 [] __get_user_pages_locked mm/gup.c:797 [inline] [] __get_user_pages_unlocked mm/gup.c:872 [inline] [] get_user_pages_unlocked+0x1d3/0x370 mm/gup.c:900 [] get_user_pages_fast+0x11e/0x320 arch/x86/mm/gup.c:440 [] get_futex_key+0x20a/0x1050 kernel/futex.c:545 [] futex_requeue+0x240/0x15c0 kernel/futex.c:1746 [] do_futex+0x48f/0x15c0 kernel/futex.c:3242 [] SYSC_futex kernel/futex.c:3280 [inline] [] SyS_futex+0x226/0x2d0 kernel/futex.c:3248 [] entry_SYSCALL_64_fastpath+0x23/0xc6 binder: 19648:19665 BC_ACQUIRE_DONE uffffffffffffffff no match binder: 19648:19665 Acquire 1 refcount change on invalid ref 3 ret -22 binder: 19648:19665 BC_CLEAR_DEATH_NOTIFICATION invalid ref 0 binder: 19648:19665 BC_INCREFS_DONE uffffffffffffffff no match binder: 19648:19665 BC_INCREFS_DONE uffffffffffffffff no match binder_alloc: binder_alloc_mmap_handler: 19648 20000000-20002000 already mapped failed -16 binder: BINDER_SET_CONTEXT_MGR already set binder: 19648:19678 ioctl 40046207 0 returned -16 binder_alloc: 19648: binder_alloc_buf, no vma binder: 19648:19690 transaction failed 29189/-3, size 0-0 line 3130 binder: 19648:19665 BC_ACQUIRE_DONE uffffffffffffffff no match binder: 19648:19665 Acquire 1 refcount change on invalid ref 3 ret -22 binder: 19648:19665 BC_CLEAR_DEATH_NOTIFICATION invalid ref 0 binder: 19648:19665 BC_INCREFS_DONE uffffffffffffffff no match binder: 19648:19665 BC_INCREFS_DONE uffffffffffffffff no match binder: release 19648:19653 transaction 203 out, still active binder: undelivered TRANSACTION_COMPLETE binder: release 19648:19665 transaction 203 in, still active binder: send failed reply for transaction 203, target dead CPU: 0 PID: 19625 Comm: syz-executor3 Not tainted 4.9.67-gf26d3c7 #106 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801a1ed7930 ffffffff81d906e9 ffff8801a1ed7c10 0000000000000000 ffff8801c9329910 ffff8801a1ed7b00 ffff8801c9329800 ffff8801a1ed7b28 ffffffff8165e307 ffff8801a1ed7ac8 ffff8801a1ed7a80 00000001ccd68067 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 netlink: 11 bytes leftover after parsing attributes in process `syz-executor3'. netlink: 11 bytes leftover after parsing attributes in process `syz-executor3'. device gre0 entered promiscuous mode binder: 19942:19943 ioctl c0306201 20009fd0 returned -11 binder: 19942:19943 DecRefs 0 refcount change on invalid ref 4 ret -22 binder: 19942:19943 unknown command 0 binder: 19942:19943 ioctl c0306201 20001fd0 returned -22 binder: 19942:19948 DecRefs 0 refcount change on invalid ref 4 ret -22 binder: 19942:19948 unknown command 0 binder: 19942:19948 ioctl c0306201 20001fd0 returned -22 binder: BINDER_SET_CONTEXT_MGR already set binder: 19942:19948 ioctl 40046207 0 returned -16 binder_alloc: 19942: binder_alloc_buf, no vma binder: 19942:19943 transaction failed 29189/-3, size 0-0 line 3130 binder: undelivered TRANSACTION_ERROR: 29189 binder: undelivered transaction 206, process died. netlink: 2 bytes leftover after parsing attributes in process `syz-executor4'. SELinux: unrecognized netlink message: protocol=0 nlmsg_type=13 sclass=netlink_route_socket pig=20005 comm=syz-executor4 netlink: 2 bytes leftover after parsing attributes in process `syz-executor4'. SELinux: unrecognized netlink message: protocol=0 nlmsg_type=13 sclass=netlink_route_socket pig=20005 comm=syz-executor4 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=31526 sclass=netlink_route_socket pig=20089 comm=syz-executor1 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=31526 sclass=netlink_route_socket pig=20112 comm=syz-executor1 binder: 20224:20225 ERROR: BC_REGISTER_LOOPER called without request IPv6: NLM_F_REPLACE set, but no existing node found! binder: BINDER_SET_CONTEXT_MGR already set binder: 20224:20235 ioctl 40046207 0 returned -16 binder: 20224:20225 ERROR: BC_REGISTER_LOOPER called without request binder_alloc: 20224: binder_alloc_buf, no vma binder: 20224:20225 transaction failed 29189/-3, size 0-0 line 3130 binder: undelivered TRANSACTION_ERROR: 29189 binder: undelivered TRANSACTION_COMPLETE IPv6: NLM_F_REPLACE set, but no existing node found! 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 nla_parse: 3 callbacks suppressed netlink: 1 bytes leftover after parsing attributes in process `syz-executor7'. IPVS: Creating netns size=2536 id=30 sd 0:0:1:0: [sg0] tag#419 FAILED Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK device lo entered promiscuous mode sd 0:0:1:0: [sg0] tag#419 CDB: opcode=0xff (vendor) sd 0:0:1:0: [sg0] tag#419 CDB[00]: ff ff ff ff 00 00 00 00 00 00 00 00 00 00 00 00 sd 0:0:1:0: [sg0] tag#419 CDB[10]: 00 00 00 00 10 27 00 00 00 00 00 00 00 00 00 00 sd 0:0:1:0: [sg0] tag#419 CDB[20]: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 sd 0:0:1:0: [sg0] tag#419 CDB[30]: 00 00 00 00 00 00 00 00 00 00 00 00 sd 0:0:1:0: [sg0] tag#710 FAILED Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK sd 0:0:1:0: [sg0] tag#710 CDB: opcode=0xff (vendor) device lo left promiscuous mode sd 0:0:1:0: [sg0] tag#710 CDB[00]: ff ff ff ff 00 00 00 00 00 00 00 00 00 00 00 00 FAULT_FLAG_ALLOW_RETRY missing 30 CPU: 0 PID: 20422 Comm: syz-executor5 Not tainted 4.9.67-gf26d3c7 #106 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801a2bcf840 ffffffff81d906e9 ffff8801a2bcfb20 0000000000000000 ffff8801ce6a7d90 ffff8801a2bcfa10 ffff8801ce6a7c80 ffff8801a2bcfa38 ffffffff8165e307 0000000000000000 ffff8801a2bcf990 00000001c4f66067 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 [] SYSC_fsetxattr fs/xattr.c:504 [inline] [] SyS_fsetxattr+0x130/0x190 fs/xattr.c:493 [] entry_SYSCALL_64_fastpath+0x23/0xc6 FAULT_FLAG_ALLOW_RETRY missing 30 CPU: 0 PID: 20415 Comm: syz-executor5 Not tainted 4.9.67-gf26d3c7 #106 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801c7577740 ffffffff81d906e9 ffff8801c7577a20 0000000000000000 ffff8801ce6a7d90 ffff8801c7577910 ffff8801ce6a7c80 ffff8801c7577938 ffffffff8165e307 ffff8801c7577798 ffff8801c7577890 00000001c4f66067 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: 20405 Comm: syz-executor5 Not tainted 4.9.67-gf26d3c7 #106 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801cd85f630 ffffffff81d906e9 ffff8801cd85f910 0000000000000000 ffff8801ce6a7d90 ffff8801cd85f800 ffff8801ce6a7c80 ffff8801cd85f828 ffffffff8165e307 1ffff10039b0beca ffff8801cd85f780 00000001c4f66067 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 [] vfs_writev+0x87/0xc0 fs/read_write.c:911 [] do_writev+0xe6/0x250 fs/read_write.c:944 [] SYSC_writev fs/read_write.c:1017 [inline] [] SyS_writev+0x27/0x30 fs/read_write.c:1014 [] entry_SYSCALL_64_fastpath+0x23/0xc6 FAULT_FLAG_ALLOW_RETRY missing 30 CPU: 0 PID: 20422 Comm: syz-executor5 Not tainted 4.9.67-gf26d3c7 #106 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801a2bcf840 ffffffff81d906e9 ffff8801a2bcfb20 0000000000000000 ffff8801c9329f10 ffff8801a2bcfa10 ffff8801c9329e00 ffff8801a2bcfa38 ffffffff8165e307 ffffffff838a9178 ffff8801a2bcf990 00000001c9749067 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 [] SYSC_fsetxattr fs/xattr.c:504 [inline] [] SyS_fsetxattr+0x130/0x190 fs/xattr.c:493 [] entry_SYSCALL_64_fastpath+0x23/0xc6 FAULT_FLAG_ALLOW_RETRY missing 30 CPU: 0 PID: 20405 Comm: syz-executor5 Not tainted 4.9.67-gf26d3c7 #106 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801cd85f740 ffffffff81d906e9 ffff8801cd85fa20 0000000000000000 ffff8801c9329f10 ffff8801cd85f910 ffff8801c9329e00 ffff8801cd85f938 ffffffff8165e307 ffff8801cd85f798 ffff8801cd85f890 00000001c9749067 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: 20415 Comm: syz-executor5 Not tainted 4.9.67-gf26d3c7 #106 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ffff8801c7577630 ffffffff81d906e9 ffff8801c7577910 0000000000000000 ffff8801c9329f10 ffff8801c7577800 ffff8801c9329e00 ffff8801c7577828 ffffffff8165e307 ffffed00355d791a ffff8801c7577780 00000001c9749067 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 [] vfs_writev+0x87/0xc0 fs/read_write.c:911 [] do_writev+0xe6/0x250 fs/read_write.c:944 [] SYSC_writev fs/read_write.c:1017 [inline] [] SyS_writev+0x27/0x30 fs/read_write.c:1014 [] entry_SYSCALL_64_fastpath+0x23/0xc6 sd 0:0:1:0: [sg0] tag#710 CDB[10]: 00 00 00 00 10 27 00 00 00 00 00 00 00 00 00 00 sd 0:0:1:0: [sg0] tag#710 CDB[20]: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 sd 0:0:1:0: [sg0] tag#710 CDB[30]: 00 00 00 00 00 00 00 00 00 00 00 00 netlink: 6 bytes leftover after parsing attributes in process `syz-executor7'. netlink: 6 bytes leftover after parsing attributes in process `syz-executor7'. netlink: 2 bytes leftover after parsing attributes in process `syz-executor3'. netlink: 2 bytes leftover after parsing attributes in process `syz-executor3'. binder: 20595:20597 ioctl 40286608 5 returned -22 binder: 20595:20597 ioctl 40046205 3 returned -22 binder: 20595:20597 ioctl 40046205 3 returned -22 binder: 20595:20597 ERROR: BC_REGISTER_LOOPER called without request netlink: 3 bytes leftover after parsing attributes in process `syz-executor0'. binder: 20595:20597 ioctl c0306201 204edfd0 returned -11 binder: 20595:20619 Acquire 1 refcount change on invalid ref 1 ret -22 binder: 20595:20619 ioctl c0306201 2000dfd0 returned -11 binder: 20595:20619 ioctl 40046205 1000 returned -22 binder: 20595:20619 DecRefs 0 refcount change on invalid ref 1 ret -22 binder: 20595:20619 BC_INCREFS_DONE u0000000000000000 no match binder: 20595:20619 ioctl c0306201 2000efd0 returned -11 device lo entered promiscuous mode device lo left promiscuous mode binder: 20595:20629 ioctl 40046205 3 returned -22 binder: 20595:20619 ioctl 40286608 5 returned -22 binder: 20595:20629 ioctl 40046205 3 returned -22 binder: 20595:20619 ERROR: BC_REGISTER_LOOPER called without request binder: 20595:20619 Acquire 1 refcount change on invalid ref 1 ret -22 device lo entered promiscuous mode netlink: 3 bytes leftover after parsing attributes in process `syz-executor0'. binder: 20595:20619 ioctl 40046205 1000 returned -22 binder: 20595:20629 DecRefs 0 refcount change on invalid ref 1 ret -22 binder: 20595:20629 BC_INCREFS_DONE u0000000000000000 no match binder: 20595:20629 ioctl c0306201 2000efd0 returned -11 device lo left promiscuous mode