syzbot has found a reproducer for the following crash on:
HEAD commit: d34f9519 usb-fuzzer: main usb gadget fuzzer driver
git tree: https://github.com/google/kasan/tree/usb-fuzzer
console output: https://syzkaller.appspot.com/x/log.txt?x=13431e7b200000
kernel config: https://syzkaller.appspot.com/x/.config?x=c73d1bb5aeaeae20
dashboard link: https://syzkaller.appspot.com/bug?extid=1d1597a5aa3679c65b9f
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12534fdd200000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=147c9247200000
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+1d1597a5aa3679c65b9f@xxxxxxxxxxxxxxxxxxxxxxxxx
rsi_91x: rsi_load_firmware: REGOUT read failed
rsi_91x: rsi_hal_device_init: Failed to load TA instructions
rsi_91x: rsi_probe: Failed in device init
------------[ cut here ]------------
ODEBUG: free active (active state 0) object type: timer_list hint:
bl_cmd_timeout+0x0/0x50 drivers/net/wireless/rsi/rsi_91x_hal.c:577
WARNING: CPU: 0 PID: 563 at lib/debugobjects.c:325
debug_print_object+0x162/0x250 lib/debugobjects.c:325
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 563 Comm: kworker/0:2 Not tainted 5.1.0-rc5-319617-gd34f951 #4
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Workqueue: usb_hub_wq hub_event
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0xe8/0x16e lib/dump_stack.c:113
panic+0x29d/0x5f2 kernel/panic.c:214
__warn.cold+0x20/0x48 kernel/panic.c:571
report_bug+0x262/0x2a0 lib/bug.c:186
fixup_bug arch/x86/kernel/traps.c:179 [inline]
fixup_bug arch/x86/kernel/traps.c:174 [inline]
do_error_trap+0x130/0x1f0 arch/x86/kernel/traps.c:272
do_invalid_op+0x37/0x40 arch/x86/kernel/traps.c:291
invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:973
RIP: 0010:debug_print_object+0x162/0x250 lib/debugobjects.c:325
Code: dd c0 a8 b3 8e 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 bf 00 00 00 48
8b 14 dd c0 a8 b3 8e 48 c7 c7 40 9d b3 8e e8 8e c3 d2 fd <0f> 0b 83 05 f9
0f 5a 10 01 48 83 c4 20 5b 5d 41 5c 41 5d c3 48 89
RSP: 0018:ffff88809e1ef110 EFLAGS: 00010086
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff815b1d22 RDI: ffffed1013c3de14
RBP: 0000000000000001 R08: ffff88809e1cb100 R09: ffffed1015a03edb
R10: ffffed1015a03eda R11: ffff8880ad01f6d7 R12: ffffffff917e77c0
R13: ffffffff8161e740 R14: ffffffff96d3ea28 R15: ffff8880a5a75f60
__debug_check_no_obj_freed lib/debugobjects.c:785 [inline]
debug_check_no_obj_freed+0x2a3/0x42e lib/debugobjects.c:817
slab_free_hook mm/slub.c:1426 [inline]
slab_free_freelist_hook+0xfb/0x140 mm/slub.c:1456
slab_free mm/slub.c:3003 [inline]
kfree+0xce/0x280 mm/slub.c:3958
rsi_probe+0xdf3/0x140d drivers/net/wireless/rsi/rsi_91x_sdio.c:1178
usb_probe_interface+0x31d/0x820 drivers/usb/core/driver.c:361
really_probe+0x2da/0xb10 drivers/base/dd.c:509
driver_probe_device+0x21d/0x350 drivers/base/dd.c:671
__device_attach_driver+0x1d8/0x290 drivers/base/dd.c:778
bus_for_each_drv+0x163/0x1e0 drivers/base/bus.c:454
__device_attach+0x223/0x3a0 drivers/base/dd.c:844
bus_probe_device+0x1f1/0x2a0 drivers/base/bus.c:514
device_add+0xad2/0x16e0 drivers/base/core.c:2106
usb_set_configuration+0xdf7/0x1740 drivers/usb/core/message.c:2021
generic_probe+0xa2/0xda drivers/usb/core/generic.c:210
usb_probe_device+0xc0/0x150 drivers/usb/core/driver.c:266
really_probe+0x2da/0xb10 drivers/base/dd.c:509
driver_probe_device+0x21d/0x350 drivers/base/dd.c:671
__device_attach_driver+0x1d8/0x290 drivers/base/dd.c:778
bus_for_each_drv+0x163/0x1e0 drivers/base/bus.c:454
__device_attach+0x223/0x3a0 drivers/base/dd.c:844
bus_probe_device+0x1f1/0x2a0 drivers/base/bus.c:514
device_add+0xad2/0x16e0 drivers/base/core.c:2106
usb_new_device.cold+0x537/0xccf drivers/usb/core/hub.c:2534
hub_port_connect drivers/usb/core/hub.c:5089 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5204 [inline]
port_event drivers/usb/core/hub.c:5350 [inline]
hub_event+0x1398/0x3b00 drivers/usb/core/hub.c:5432
process_one_work+0x90f/0x1580 kernel/workqueue.c:2269
worker_thread+0x9b/0xe20 kernel/workqueue.c:2415
kthread+0x313/0x420 kernel/kthread.c:253
ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
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