binder: 31388:31412 ioctl c0286404 207e2fd8 returned -22
keychord: unsupported version 40
==================================================================
BUG: Double free or freeing an invalid pointer
Unexpected shadow byte: 0xFB
CPU: 0 PID: 31416 Comm: syz-executor7 Not tainted 4.9.39-ga1e4c795 #8
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff88016e65fb78 ffffffff81eacd59 ffff8801dac01b40 ffff8801d175d740
 ffff8801d175d750 ffffffff82b495eb 0000000000000282 ffff88016e65fba0
 ffffffff81546bfc 00000000fffffffb ffff8801dac01b40 ffff8801d175d740
Call Trace:
 [<ffffffff81eacd59>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81eacd59>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81546bfc>] kasan_object_err+0x1c/0x70 mm/kasan/report.c:160
 [<ffffffff81547404>] kasan_report_double_free+0x44/0x60 mm/kasan/report.c:181
 [<ffffffff815467ed>] kasan_slab_free+0x9d/0xc0 mm/kasan/kasan.c:562
 [<ffffffff815427f0>] slab_free_hook mm/slub.c:1355 [inline]
 [<ffffffff815427f0>] slab_free_freelist_hook mm/slub.c:1377 [inline]
 [<ffffffff815427f0>] slab_free mm/slub.c:2958 [inline]
 [<ffffffff815427f0>] kfree+0xf0/0x2f0 mm/slub.c:3878
 [<ffffffff82b495eb>] keychord_write+0x61b/0x810 drivers/input/misc/keychord.c:319
 [<ffffffff81572d6b>] __vfs_write+0xfb/0x660 fs/read_write.c:510
 [<ffffffff81576df0>] vfs_write+0x170/0x4e0 fs/read_write.c:560
 [<ffffffff8157a724>] SYSC_write fs/read_write.c:607 [inline]
 [<ffffffff8157a724>] SyS_write+0xd4/0x1a0 fs/read_write.c:599
 [<ffffffff83965985>] entry_SYSCALL_64_fastpath+0x23/0xc6
Object at ffff8801d175d740, in cache kmalloc-16 size: 16
Allocated:
PID = 31416
 save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:57
 save_stack+0x43/0xd0 mm/kasan/kasan.c:495
 set_track mm/kasan/kasan.c:507 [inline]
 kasan_kmalloc+0xad/0xe0 mm/kasan/kasan.c:598
 __kmalloc+0x128/0x320 mm/slub.c:3741
 kmalloc include/linux/slab.h:495 [inline]
 kzalloc include/linux/slab.h:636 [inline]
 keychord_write+0x6d/0x810 drivers/input/misc/keychord.c:243
 __vfs_write+0xfb/0x660 fs/read_write.c:510
 vfs_write+0x170/0x4e0 fs/read_write.c:560
 SYSC_write fs/read_write.c:607 [inline]
 SyS_write+0xd4/0x1a0 fs/read_write.c:599
 entry_SYSCALL_64_fastpath+0x23/0xc6
Freed:
PID = 31417
 save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:57
 save_stack+0x43/0xd0 mm/kasan/kasan.c:495
 set_track mm/kasan/kasan.c:507 [inline]
 kasan_slab_free+0x73/0xc0 mm/kasan/kasan.c:571
 slab_free_hook mm/slub.c:1355 [inline]
 slab_free_freelist_hook mm/slub.c:1377 [inline]
 slab_free mm/slub.c:2958 [inline]
 kfree+0xf0/0x2f0 mm/slub.c:3878
 keychord_write+0x150/0x810 drivers/input/misc/keychord.c:261
 __vfs_write+0xfb/0x660 fs/read_write.c:510
 vfs_write+0x170/0x4e0 fs/read_write.c:560
 SYSC_write fs/read_write.c:607 [inline]
 SyS_write+0xd4/0x1a0 fs/read_write.c:599
 entry_SYSCALL_64_fastpath+0x23/0xc6
==================================================================
keychord: unsupported version 40
xs_tcp_setup_socket: connect returned unhandled error -113
xprt_adjust_timeout: rq_timeout = 0!
xs_tcp_setup_socket: connect returned unhandled error -113
xprt_adjust_timeout: rq_timeout = 0!
binder: 31506:31508 ioctl c0286404 207e2fd8 returned -22
netlink: 10 bytes leftover after parsing attributes in process `syz-executor6'.
binder: 31506:31508 ioctl c0286404 207e2fd8 returned -22
netlink: 10 bytes leftover after parsing attributes in process `syz-executor6'.
binder: 32379:32380 ioctl c0286404 207e2fd8 returned -22
binder: 32379:32426 ioctl c0286404 207e2fd8 returned -22
netlink: 1 bytes leftover after parsing attributes in process `syz-executor3'.
netlink: 1 bytes leftover after parsing attributes in process `syz-executor3'.
binder: 1107:1110 ioctl c0bc5351 202fd000 returned -22
binder: 1107:1110 ioctl c0bc5351 202fd000 returned -22
device lo left 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