Hi,
We would like to report the following bug which has been found by our modified version of syzkaller.
======================================================
description: KASAN: use-after-free Read in spi_unregister_controller
affected file: drivers/spi/spi.c
kernel version: 5.15.0-rc6
kernel commit: 64222515138e43da1fcf288f0289ef1020427b87
git tree: upstream
kernel config: attached
crash reproducer: attached
======================================================
Crash log:
We would like to report the following bug which has been found by our modified version of syzkaller.
======================================================
description: KASAN: use-after-free Read in spi_unregister_controller
affected file: drivers/spi/spi.c
kernel version: 5.15.0-rc6
kernel commit: 64222515138e43da1fcf288f0289ef1020427b87
git tree: upstream
kernel config: attached
crash reproducer: attached
======================================================
Crash log:
WARNING: held lock freed!
5.15.0-rc6+ #1 Not tainted
-------------------------
kworker/0:0/5 is freeing memory ffff88801659c000-ffff88801659cfff, with a lock still held there!
ffff88801659c668 (&ctlr->add_lock){+.+.}-{3:3}, at: spi_unregister_controller+0x3e/0x260 drivers/spi/spi.c:2964
8 locks held by kworker/0:0/5:
#0: ffff888041bc7d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:633 [inline]
#0: ffff888041bc7d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:661 [inline]
#0: ffff888041bc7d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x5aa/0xe60 kernel/workqueue.c:2268
#1: ffffc9000036fdc8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:633 [inline]
#1: ffffc9000036fdc8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:661 [inline]
#1: ffffc9000036fdc8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x5aa/0xe60 kernel/workqueue.c:2268
#2: ffff88807ea7ea20 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline]
#2: ffff88807ea7ea20 (&dev->mutex){....}-{3:3}, at: hub_event+0x172/0x3030 drivers/usb/core/hub.c:5662
#3: ffff88800f618220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline]
#3: ffff88800f618220 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0xb3/0xd0 drivers/usb/core/hub.c:2216
#4: ffff8880283fd1a8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline]
#4: ffff8880283fd1a8 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1032 [inline]
#4: ffff8880283fd1a8 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal drivers/base/dd.c:1233 [inline]
#4: ffff8880283fd1a8 (&dev->mutex){....}-{3:3}, at: device_release_driver+0x22/0x40 drivers/base/dd.c:1259
#5: ffff888011c32d38 (&dev->vb_queue_lock){+.+.}-{3:3}, at: msi2500_disconnect+0x50/0x100 drivers/media/usb/msi2500/msi2500.c:571
#6: ffff888011c32ca8 (&dev->v4l2_lock){+.+.}-{3:3}, at: msi2500_disconnect+0x5a/0x100 drivers/media/usb/msi2500/msi2500.c:572
#7: ffff88801659c668 (&ctlr->add_lock){+.+.}-{3:3}, at: spi_unregister_controller+0x3e/0x260 drivers/spi/spi.c:2964
stack backtrace:
CPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 5.15.0-rc6+ #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014
Workqueue: usb_hub_wq hub_event
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd6/0x142 lib/dump_stack.c:106
dump_stack+0x15/0x17 lib/dump_stack.c:113
print_freed_lock_bug kernel/locking/lockdep.c:6376 [inline]
debug_check_no_locks_freed.cold+0x83/0x88 kernel/locking/lockdep.c:6409
slab_free_hook mm/slub.c:1672 [inline]
slab_free_freelist_hook+0x7d/0x1e0 mm/slub.c:1726
slab_free mm/slub.c:3492 [inline]
kfree+0xeb/0x540 mm/slub.c:4552
spi_controller_release+0x16/0x20 drivers/spi/spi.c:2401
device_release+0x68/0x130 drivers/base/core.c:2232
kobject_cleanup lib/kobject.c:705 [inline]
kobject_release lib/kobject.c:736 [inline]
kref_put include/linux/kref.h:65 [inline]
kobject_put+0x189/0x370 lib/kobject.c:753
put_device+0x20/0x30 drivers/base/core.c:3503
spi_unregister_controller+0x234/0x260 drivers/spi/spi.c:2986
msi2500_disconnect+0xa2/0x100 drivers/media/usb/msi2500/msi2500.c:577
usb_unbind_interface+0x12e/0x500 drivers/usb/core/driver.c:458
__device_release_driver+0x419/0x420 drivers/base/dd.c:1205
device_release_driver_internal drivers/base/dd.c:1236 [inline]
device_release_driver+0x2c/0x40 drivers/base/dd.c:1259
bus_remove_device+0x1ec/0x2e0 drivers/base/bus.c:529
device_del+0x338/0x7b0 drivers/base/core.c:3583
usb_disable_device+0x225/0x4c0 drivers/usb/core/message.c:1419
usb_disconnect.cold+0x161/0x491 drivers/usb/core/hub.c:2225
hub_port_connect drivers/usb/core/hub.c:5199 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5488 [inline]
port_event drivers/usb/core/hub.c:5634 [inline]
hub_event+0x1816/0x3030 drivers/usb/core/hub.c:5716
process_one_work+0x6d6/0xe60 kernel/workqueue.c:2297
worker_thread+0x3af/0x900 kernel/workqueue.c:2444
kthread+0x27a/0x2c0 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
==================================================================
BUG: KASAN: use-after-free in instrument_atomic_read include/linux/instrumented.h:71 [inline]
BUG: KASAN: use-after-free in atomic_long_read include/linux/atomic/atomic-instrumented.h:1183 [inline]
BUG: KASAN: use-after-free in __mutex_unlock_slowpath+0xa4/0x430 kernel/locking/mutex.c:860
Read of size 8 at addr ffff88801659c600 by task kworker/0:0/5
CPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 5.15.0-rc6+ #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014
Workqueue: usb_hub_wq hub_event
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd6/0x142 lib/dump_stack.c:106
print_address_description.constprop.0.cold+0x6f/0x314 mm/kasan/report.c:256
__kasan_report mm/kasan/report.c:442 [inline]
kasan_report.cold+0x82/0xdb mm/kasan/report.c:459
check_region_inline mm/kasan/generic.c:183 [inline]
kasan_check_range+0x148/0x190 mm/kasan/generic.c:189
__kasan_check_read+0x11/0x20 mm/kasan/shadow.c:31
instrument_atomic_read include/linux/instrumented.h:71 [inline]
atomic_long_read include/linux/atomic/atomic-instrumented.h:1183 [inline]
__mutex_unlock_slowpath+0xa4/0x430 kernel/locking/mutex.c:860
mutex_unlock+0xd/0x10 kernel/locking/mutex.c:536
spi_unregister_controller+0x1d4/0x260 drivers/spi/spi.c:2995
msi2500_disconnect+0xa2/0x100 drivers/media/usb/msi2500/msi2500.c:577
usb_unbind_interface+0x12e/0x500 drivers/usb/core/driver.c:458
__device_release_driver+0x419/0x420 drivers/base/dd.c:1205
device_release_driver_internal drivers/base/dd.c:1236 [inline]
device_release_driver+0x2c/0x40 drivers/base/dd.c:1259
bus_remove_device+0x1ec/0x2e0 drivers/base/bus.c:529
device_del+0x338/0x7b0 drivers/base/core.c:3583
usb_disable_device+0x225/0x4c0 drivers/usb/core/message.c:1419
usb_disconnect.cold+0x161/0x491 drivers/usb/core/hub.c:2225
hub_port_connect drivers/usb/core/hub.c:5199 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5488 [inline]
port_event drivers/usb/core/hub.c:5634 [inline]
hub_event+0x1816/0x3030 drivers/usb/core/hub.c:5716
process_one_work+0x6d6/0xe60 kernel/workqueue.c:2297
worker_thread+0x3af/0x900 kernel/workqueue.c:2444
kthread+0x27a/0x2c0 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Allocated by task 5:
kasan_save_stack+0x23/0x50 mm/kasan/common.c:38
kasan_set_track mm/kasan/common.c:46 [inline]
set_alloc_info mm/kasan/common.c:434 [inline]
____kasan_kmalloc mm/kasan/common.c:513 [inline]
____kasan_kmalloc mm/kasan/common.c:472 [inline]
__kasan_kmalloc+0xa9/0xe0 mm/kasan/common.c:522
kasan_kmalloc include/linux/kasan.h:264 [inline]
__kmalloc+0x1b2/0x330 mm/slub.c:4400
kmalloc include/linux/slab.h:596 [inline]
kzalloc include/linux/slab.h:721 [inline]
__spi_alloc_controller+0x3b/0x1d0 drivers/spi/spi.c:2545
spi_alloc_master include/linux/spi/spi.h:730 [inline]
msi2500_probe+0x3d7/0x640 drivers/media/usb/msi2500/msi2500.c:1223
usb_probe_interface+0x219/0x4f0 drivers/usb/core/driver.c:396
call_driver_probe drivers/base/dd.c:517 [inline]
really_probe+0x1a7/0x730 drivers/base/dd.c:596
__driver_probe_device+0x226/0x2e0 drivers/base/dd.c:751
driver_probe_device+0x51/0x180 drivers/base/dd.c:781
__device_attach_driver+0x14f/0x1f0 drivers/base/dd.c:898
bus_for_each_drv+0x12e/0x190 drivers/base/bus.c:427
__device_attach+0x1d5/0x390 drivers/base/dd.c:969
device_initial_probe+0x1b/0x30 drivers/base/dd.c:1016
bus_probe_device+0x14f/0x170 drivers/base/bus.c:487
device_add+0x920/0x1370 drivers/base/core.c:3396
usb_set_configuration+0xd1b/0x1060 drivers/usb/core/message.c:2170
usb_generic_driver_probe+0xa2/0xe0 drivers/usb/core/generic.c:238
usb_probe_device+0xa9/0x200 drivers/usb/core/driver.c:293
call_driver_probe drivers/base/dd.c:517 [inline]
really_probe+0x1a7/0x730 drivers/base/dd.c:596
__driver_probe_device+0x226/0x2e0 drivers/base/dd.c:751
driver_probe_device+0x51/0x180 drivers/base/dd.c:781
__device_attach_driver+0x14f/0x1f0 drivers/base/dd.c:898
bus_for_each_drv+0x12e/0x190 drivers/base/bus.c:427
__device_attach+0x1d5/0x390 drivers/base/dd.c:969
device_initial_probe+0x1b/0x30 drivers/base/dd.c:1016
bus_probe_device+0x14f/0x170 drivers/base/bus.c:487
device_add+0x920/0x1370 drivers/base/core.c:3396
usb_new_device.cold+0x1b0/0x905 drivers/usb/core/hub.c:2563
hub_port_connect drivers/usb/core/hub.c:5348 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5488 [inline]
port_event drivers/usb/core/hub.c:5634 [inline]
hub_event+0x1d50/0x3030 drivers/usb/core/hub.c:5716
process_one_work+0x6d6/0xe60 kernel/workqueue.c:2297
worker_thread+0x3af/0x900 kernel/workqueue.c:2444
kthread+0x27a/0x2c0 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Freed by task 5:
kasan_save_stack+0x23/0x50 mm/kasan/common.c:38
kasan_set_track+0x20/0x30 mm/kasan/common.c:46
kasan_set_free_info+0x24/0x40 mm/kasan/generic.c:360
____kasan_slab_free mm/kasan/common.c:366 [inline]
____kasan_slab_free mm/kasan/common.c:328 [inline]
__kasan_slab_free+0x101/0x140 mm/kasan/common.c:374
kasan_slab_free include/linux/kasan.h:230 [inline]
slab_free_hook mm/slub.c:1700 [inline]
slab_free_freelist_hook+0x95/0x1e0 mm/slub.c:1726
slab_free mm/slub.c:3492 [inline]
kfree+0xeb/0x540 mm/slub.c:4552
spi_controller_release+0x16/0x20 drivers/spi/spi.c:2401
device_release+0x68/0x130 drivers/base/core.c:2232
kobject_cleanup lib/kobject.c:705 [inline]
kobject_release lib/kobject.c:736 [inline]
kref_put include/linux/kref.h:65 [inline]
kobject_put+0x189/0x370 lib/kobject.c:753
put_device+0x20/0x30 drivers/base/core.c:3503
spi_unregister_controller+0x234/0x260 drivers/spi/spi.c:2986
msi2500_disconnect+0xa2/0x100 drivers/media/usb/msi2500/msi2500.c:577
usb_unbind_interface+0x12e/0x500 drivers/usb/core/driver.c:458
__device_release_driver+0x419/0x420 drivers/base/dd.c:1205
device_release_driver_internal drivers/base/dd.c:1236 [inline]
device_release_driver+0x2c/0x40 drivers/base/dd.c:1259
bus_remove_device+0x1ec/0x2e0 drivers/base/bus.c:529
device_del+0x338/0x7b0 drivers/base/core.c:3583
usb_disable_device+0x225/0x4c0 drivers/usb/core/message.c:1419
usb_disconnect.cold+0x161/0x491 drivers/usb/core/hub.c:2225
hub_port_connect drivers/usb/core/hub.c:5199 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5488 [inline]
port_event drivers/usb/core/hub.c:5634 [inline]
hub_event+0x1816/0x3030 drivers/usb/core/hub.c:5716
process_one_work+0x6d6/0xe60 kernel/workqueue.c:2297
worker_thread+0x3af/0x900 kernel/workqueue.c:2444
kthread+0x27a/0x2c0 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
The buggy address belongs to the object at ffff88801659c000
which belongs to the cache kmalloc-4k of size 4096
The buggy address is located 1536 bytes inside of
4096-byte region [ffff88801659c000, ffff88801659d000)
The buggy address belongs to the page:
page:ffffea0000596600 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x16598
head:ffffea0000596600 order:3 compound_mapcount:0 compound_pincount:0
flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000010200 0000000000000000 0000000300000001 ffff88800c842140
raw: 0000000000000000 0000000000040004 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd2040(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1, ts 16693266737, free_ts 16667681738
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook+0x10f/0x150 mm/page_alloc.c:2418
prep_new_page mm/page_alloc.c:2424 [inline]
get_page_from_freelist+0x82b/0x1fd0 mm/page_alloc.c:4153
__alloc_pages+0x1a5/0x470 mm/page_alloc.c:5375
alloc_pages+0xe3/0x250 mm/mempolicy.c:2191
alloc_slab_page mm/slub.c:1770 [inline]
allocate_slab mm/slub.c:1907 [inline]
new_slab+0x32e/0x4b0 mm/slub.c:1970
___slab_alloc+0x950/0x1050 mm/slub.c:3001
__slab_alloc.constprop.0+0x53/0xa0 mm/slub.c:3088
slab_alloc_node mm/slub.c:3179 [inline]
slab_alloc mm/slub.c:3221 [inline]
__kmalloc+0x319/0x330 mm/slub.c:4396
kmalloc include/linux/slab.h:596 [inline]
tomoyo_realpath_from_path+0x86/0x3c0 security/tomoyo/realpath.c:254
tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
tomoyo_path_number_perm+0x19c/0x4a0 security/tomoyo/file.c:723
tomoyo_path_mkdir+0x91/0xc0 security/tomoyo/tomoyo.c:166
security_path_mkdir+0x88/0xd0 security/security.c:1140
do_mkdirat+0x13a/0x2b0 fs/namei.c:3907
__do_sys_mkdir fs/namei.c:3931 [inline]
__se_sys_mkdir fs/namei.c:3929 [inline]
__x64_sys_mkdir+0x97/0xc0 fs/namei.c:3929
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
page last free stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1338 [inline]
free_pcp_prepare+0x1e2/0x4c0 mm/page_alloc.c:1389
free_unref_page_prepare mm/page_alloc.c:3315 [inline]
free_unref_page+0x1c/0x3d0 mm/page_alloc.c:3394
free_the_page mm/page_alloc.c:705 [inline]
__free_pages+0x111/0x140 mm/page_alloc.c:5448
__free_slab+0x194/0x340 mm/slub.c:1995
free_slab mm/slub.c:2010 [inline]
discard_slab+0x3c/0x70 mm/slub.c:2016
__unfreeze_partials+0x340/0x360 mm/slub.c:2502
put_cpu_partial+0x171/0x240 mm/slub.c:2582
__slab_free+0x203/0x350 mm/slub.c:3361
do_slab_free mm/slub.c:3480 [inline]
___cache_free+0x33e/0x350 mm/slub.c:3499
qlink_free mm/kasan/quarantine.c:146 [inline]
qlist_free_all+0x5e/0xd0 mm/kasan/quarantine.c:165
kasan_quarantine_reduce+0x180/0x200 mm/kasan/quarantine.c:272
__kasan_slab_alloc+0x9d/0xb0 mm/kasan/common.c:444
kasan_slab_alloc include/linux/kasan.h:254 [inline]
slab_post_alloc_hook mm/slab.h:519 [inline]
slab_alloc_node mm/slub.c:3213 [inline]
slab_alloc mm/slub.c:3221 [inline]
kmem_cache_alloc+0x21b/0x3a0 mm/slub.c:3226
getname_flags.part.0+0x3c/0x310 fs/namei.c:138
getname_flags include/linux/audit.h:319 [inline]
getname+0x5f/0x90 fs/namei.c:217
do_sys_openat2+0xf6/0x3d0 fs/open.c:1194
Memory state around the buggy address:
ffff88801659c500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88801659c580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88801659c600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff88801659c680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88801659c700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
5.15.0-rc6+ #1 Not tainted
-------------------------
kworker/0:0/5 is freeing memory ffff88801659c000-ffff88801659cfff, with a lock still held there!
ffff88801659c668 (&ctlr->add_lock){+.+.}-{3:3}, at: spi_unregister_controller+0x3e/0x260 drivers/spi/spi.c:2964
8 locks held by kworker/0:0/5:
#0: ffff888041bc7d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:633 [inline]
#0: ffff888041bc7d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:661 [inline]
#0: ffff888041bc7d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x5aa/0xe60 kernel/workqueue.c:2268
#1: ffffc9000036fdc8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:633 [inline]
#1: ffffc9000036fdc8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:661 [inline]
#1: ffffc9000036fdc8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x5aa/0xe60 kernel/workqueue.c:2268
#2: ffff88807ea7ea20 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline]
#2: ffff88807ea7ea20 (&dev->mutex){....}-{3:3}, at: hub_event+0x172/0x3030 drivers/usb/core/hub.c:5662
#3: ffff88800f618220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline]
#3: ffff88800f618220 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0xb3/0xd0 drivers/usb/core/hub.c:2216
#4: ffff8880283fd1a8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline]
#4: ffff8880283fd1a8 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1032 [inline]
#4: ffff8880283fd1a8 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal drivers/base/dd.c:1233 [inline]
#4: ffff8880283fd1a8 (&dev->mutex){....}-{3:3}, at: device_release_driver+0x22/0x40 drivers/base/dd.c:1259
#5: ffff888011c32d38 (&dev->vb_queue_lock){+.+.}-{3:3}, at: msi2500_disconnect+0x50/0x100 drivers/media/usb/msi2500/msi2500.c:571
#6: ffff888011c32ca8 (&dev->v4l2_lock){+.+.}-{3:3}, at: msi2500_disconnect+0x5a/0x100 drivers/media/usb/msi2500/msi2500.c:572
#7: ffff88801659c668 (&ctlr->add_lock){+.+.}-{3:3}, at: spi_unregister_controller+0x3e/0x260 drivers/spi/spi.c:2964
stack backtrace:
CPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 5.15.0-rc6+ #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014
Workqueue: usb_hub_wq hub_event
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd6/0x142 lib/dump_stack.c:106
dump_stack+0x15/0x17 lib/dump_stack.c:113
print_freed_lock_bug kernel/locking/lockdep.c:6376 [inline]
debug_check_no_locks_freed.cold+0x83/0x88 kernel/locking/lockdep.c:6409
slab_free_hook mm/slub.c:1672 [inline]
slab_free_freelist_hook+0x7d/0x1e0 mm/slub.c:1726
slab_free mm/slub.c:3492 [inline]
kfree+0xeb/0x540 mm/slub.c:4552
spi_controller_release+0x16/0x20 drivers/spi/spi.c:2401
device_release+0x68/0x130 drivers/base/core.c:2232
kobject_cleanup lib/kobject.c:705 [inline]
kobject_release lib/kobject.c:736 [inline]
kref_put include/linux/kref.h:65 [inline]
kobject_put+0x189/0x370 lib/kobject.c:753
put_device+0x20/0x30 drivers/base/core.c:3503
spi_unregister_controller+0x234/0x260 drivers/spi/spi.c:2986
msi2500_disconnect+0xa2/0x100 drivers/media/usb/msi2500/msi2500.c:577
usb_unbind_interface+0x12e/0x500 drivers/usb/core/driver.c:458
__device_release_driver+0x419/0x420 drivers/base/dd.c:1205
device_release_driver_internal drivers/base/dd.c:1236 [inline]
device_release_driver+0x2c/0x40 drivers/base/dd.c:1259
bus_remove_device+0x1ec/0x2e0 drivers/base/bus.c:529
device_del+0x338/0x7b0 drivers/base/core.c:3583
usb_disable_device+0x225/0x4c0 drivers/usb/core/message.c:1419
usb_disconnect.cold+0x161/0x491 drivers/usb/core/hub.c:2225
hub_port_connect drivers/usb/core/hub.c:5199 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5488 [inline]
port_event drivers/usb/core/hub.c:5634 [inline]
hub_event+0x1816/0x3030 drivers/usb/core/hub.c:5716
process_one_work+0x6d6/0xe60 kernel/workqueue.c:2297
worker_thread+0x3af/0x900 kernel/workqueue.c:2444
kthread+0x27a/0x2c0 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
==================================================================
BUG: KASAN: use-after-free in instrument_atomic_read include/linux/instrumented.h:71 [inline]
BUG: KASAN: use-after-free in atomic_long_read include/linux/atomic/atomic-instrumented.h:1183 [inline]
BUG: KASAN: use-after-free in __mutex_unlock_slowpath+0xa4/0x430 kernel/locking/mutex.c:860
Read of size 8 at addr ffff88801659c600 by task kworker/0:0/5
CPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 5.15.0-rc6+ #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014
Workqueue: usb_hub_wq hub_event
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd6/0x142 lib/dump_stack.c:106
print_address_description.constprop.0.cold+0x6f/0x314 mm/kasan/report.c:256
__kasan_report mm/kasan/report.c:442 [inline]
kasan_report.cold+0x82/0xdb mm/kasan/report.c:459
check_region_inline mm/kasan/generic.c:183 [inline]
kasan_check_range+0x148/0x190 mm/kasan/generic.c:189
__kasan_check_read+0x11/0x20 mm/kasan/shadow.c:31
instrument_atomic_read include/linux/instrumented.h:71 [inline]
atomic_long_read include/linux/atomic/atomic-instrumented.h:1183 [inline]
__mutex_unlock_slowpath+0xa4/0x430 kernel/locking/mutex.c:860
mutex_unlock+0xd/0x10 kernel/locking/mutex.c:536
spi_unregister_controller+0x1d4/0x260 drivers/spi/spi.c:2995
msi2500_disconnect+0xa2/0x100 drivers/media/usb/msi2500/msi2500.c:577
usb_unbind_interface+0x12e/0x500 drivers/usb/core/driver.c:458
__device_release_driver+0x419/0x420 drivers/base/dd.c:1205
device_release_driver_internal drivers/base/dd.c:1236 [inline]
device_release_driver+0x2c/0x40 drivers/base/dd.c:1259
bus_remove_device+0x1ec/0x2e0 drivers/base/bus.c:529
device_del+0x338/0x7b0 drivers/base/core.c:3583
usb_disable_device+0x225/0x4c0 drivers/usb/core/message.c:1419
usb_disconnect.cold+0x161/0x491 drivers/usb/core/hub.c:2225
hub_port_connect drivers/usb/core/hub.c:5199 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5488 [inline]
port_event drivers/usb/core/hub.c:5634 [inline]
hub_event+0x1816/0x3030 drivers/usb/core/hub.c:5716
process_one_work+0x6d6/0xe60 kernel/workqueue.c:2297
worker_thread+0x3af/0x900 kernel/workqueue.c:2444
kthread+0x27a/0x2c0 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Allocated by task 5:
kasan_save_stack+0x23/0x50 mm/kasan/common.c:38
kasan_set_track mm/kasan/common.c:46 [inline]
set_alloc_info mm/kasan/common.c:434 [inline]
____kasan_kmalloc mm/kasan/common.c:513 [inline]
____kasan_kmalloc mm/kasan/common.c:472 [inline]
__kasan_kmalloc+0xa9/0xe0 mm/kasan/common.c:522
kasan_kmalloc include/linux/kasan.h:264 [inline]
__kmalloc+0x1b2/0x330 mm/slub.c:4400
kmalloc include/linux/slab.h:596 [inline]
kzalloc include/linux/slab.h:721 [inline]
__spi_alloc_controller+0x3b/0x1d0 drivers/spi/spi.c:2545
spi_alloc_master include/linux/spi/spi.h:730 [inline]
msi2500_probe+0x3d7/0x640 drivers/media/usb/msi2500/msi2500.c:1223
usb_probe_interface+0x219/0x4f0 drivers/usb/core/driver.c:396
call_driver_probe drivers/base/dd.c:517 [inline]
really_probe+0x1a7/0x730 drivers/base/dd.c:596
__driver_probe_device+0x226/0x2e0 drivers/base/dd.c:751
driver_probe_device+0x51/0x180 drivers/base/dd.c:781
__device_attach_driver+0x14f/0x1f0 drivers/base/dd.c:898
bus_for_each_drv+0x12e/0x190 drivers/base/bus.c:427
__device_attach+0x1d5/0x390 drivers/base/dd.c:969
device_initial_probe+0x1b/0x30 drivers/base/dd.c:1016
bus_probe_device+0x14f/0x170 drivers/base/bus.c:487
device_add+0x920/0x1370 drivers/base/core.c:3396
usb_set_configuration+0xd1b/0x1060 drivers/usb/core/message.c:2170
usb_generic_driver_probe+0xa2/0xe0 drivers/usb/core/generic.c:238
usb_probe_device+0xa9/0x200 drivers/usb/core/driver.c:293
call_driver_probe drivers/base/dd.c:517 [inline]
really_probe+0x1a7/0x730 drivers/base/dd.c:596
__driver_probe_device+0x226/0x2e0 drivers/base/dd.c:751
driver_probe_device+0x51/0x180 drivers/base/dd.c:781
__device_attach_driver+0x14f/0x1f0 drivers/base/dd.c:898
bus_for_each_drv+0x12e/0x190 drivers/base/bus.c:427
__device_attach+0x1d5/0x390 drivers/base/dd.c:969
device_initial_probe+0x1b/0x30 drivers/base/dd.c:1016
bus_probe_device+0x14f/0x170 drivers/base/bus.c:487
device_add+0x920/0x1370 drivers/base/core.c:3396
usb_new_device.cold+0x1b0/0x905 drivers/usb/core/hub.c:2563
hub_port_connect drivers/usb/core/hub.c:5348 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5488 [inline]
port_event drivers/usb/core/hub.c:5634 [inline]
hub_event+0x1d50/0x3030 drivers/usb/core/hub.c:5716
process_one_work+0x6d6/0xe60 kernel/workqueue.c:2297
worker_thread+0x3af/0x900 kernel/workqueue.c:2444
kthread+0x27a/0x2c0 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Freed by task 5:
kasan_save_stack+0x23/0x50 mm/kasan/common.c:38
kasan_set_track+0x20/0x30 mm/kasan/common.c:46
kasan_set_free_info+0x24/0x40 mm/kasan/generic.c:360
____kasan_slab_free mm/kasan/common.c:366 [inline]
____kasan_slab_free mm/kasan/common.c:328 [inline]
__kasan_slab_free+0x101/0x140 mm/kasan/common.c:374
kasan_slab_free include/linux/kasan.h:230 [inline]
slab_free_hook mm/slub.c:1700 [inline]
slab_free_freelist_hook+0x95/0x1e0 mm/slub.c:1726
slab_free mm/slub.c:3492 [inline]
kfree+0xeb/0x540 mm/slub.c:4552
spi_controller_release+0x16/0x20 drivers/spi/spi.c:2401
device_release+0x68/0x130 drivers/base/core.c:2232
kobject_cleanup lib/kobject.c:705 [inline]
kobject_release lib/kobject.c:736 [inline]
kref_put include/linux/kref.h:65 [inline]
kobject_put+0x189/0x370 lib/kobject.c:753
put_device+0x20/0x30 drivers/base/core.c:3503
spi_unregister_controller+0x234/0x260 drivers/spi/spi.c:2986
msi2500_disconnect+0xa2/0x100 drivers/media/usb/msi2500/msi2500.c:577
usb_unbind_interface+0x12e/0x500 drivers/usb/core/driver.c:458
__device_release_driver+0x419/0x420 drivers/base/dd.c:1205
device_release_driver_internal drivers/base/dd.c:1236 [inline]
device_release_driver+0x2c/0x40 drivers/base/dd.c:1259
bus_remove_device+0x1ec/0x2e0 drivers/base/bus.c:529
device_del+0x338/0x7b0 drivers/base/core.c:3583
usb_disable_device+0x225/0x4c0 drivers/usb/core/message.c:1419
usb_disconnect.cold+0x161/0x491 drivers/usb/core/hub.c:2225
hub_port_connect drivers/usb/core/hub.c:5199 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5488 [inline]
port_event drivers/usb/core/hub.c:5634 [inline]
hub_event+0x1816/0x3030 drivers/usb/core/hub.c:5716
process_one_work+0x6d6/0xe60 kernel/workqueue.c:2297
worker_thread+0x3af/0x900 kernel/workqueue.c:2444
kthread+0x27a/0x2c0 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
The buggy address belongs to the object at ffff88801659c000
which belongs to the cache kmalloc-4k of size 4096
The buggy address is located 1536 bytes inside of
4096-byte region [ffff88801659c000, ffff88801659d000)
The buggy address belongs to the page:
page:ffffea0000596600 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x16598
head:ffffea0000596600 order:3 compound_mapcount:0 compound_pincount:0
flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000010200 0000000000000000 0000000300000001 ffff88800c842140
raw: 0000000000000000 0000000000040004 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd2040(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1, ts 16693266737, free_ts 16667681738
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook+0x10f/0x150 mm/page_alloc.c:2418
prep_new_page mm/page_alloc.c:2424 [inline]
get_page_from_freelist+0x82b/0x1fd0 mm/page_alloc.c:4153
__alloc_pages+0x1a5/0x470 mm/page_alloc.c:5375
alloc_pages+0xe3/0x250 mm/mempolicy.c:2191
alloc_slab_page mm/slub.c:1770 [inline]
allocate_slab mm/slub.c:1907 [inline]
new_slab+0x32e/0x4b0 mm/slub.c:1970
___slab_alloc+0x950/0x1050 mm/slub.c:3001
__slab_alloc.constprop.0+0x53/0xa0 mm/slub.c:3088
slab_alloc_node mm/slub.c:3179 [inline]
slab_alloc mm/slub.c:3221 [inline]
__kmalloc+0x319/0x330 mm/slub.c:4396
kmalloc include/linux/slab.h:596 [inline]
tomoyo_realpath_from_path+0x86/0x3c0 security/tomoyo/realpath.c:254
tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
tomoyo_path_number_perm+0x19c/0x4a0 security/tomoyo/file.c:723
tomoyo_path_mkdir+0x91/0xc0 security/tomoyo/tomoyo.c:166
security_path_mkdir+0x88/0xd0 security/security.c:1140
do_mkdirat+0x13a/0x2b0 fs/namei.c:3907
__do_sys_mkdir fs/namei.c:3931 [inline]
__se_sys_mkdir fs/namei.c:3929 [inline]
__x64_sys_mkdir+0x97/0xc0 fs/namei.c:3929
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
page last free stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1338 [inline]
free_pcp_prepare+0x1e2/0x4c0 mm/page_alloc.c:1389
free_unref_page_prepare mm/page_alloc.c:3315 [inline]
free_unref_page+0x1c/0x3d0 mm/page_alloc.c:3394
free_the_page mm/page_alloc.c:705 [inline]
__free_pages+0x111/0x140 mm/page_alloc.c:5448
__free_slab+0x194/0x340 mm/slub.c:1995
free_slab mm/slub.c:2010 [inline]
discard_slab+0x3c/0x70 mm/slub.c:2016
__unfreeze_partials+0x340/0x360 mm/slub.c:2502
put_cpu_partial+0x171/0x240 mm/slub.c:2582
__slab_free+0x203/0x350 mm/slub.c:3361
do_slab_free mm/slub.c:3480 [inline]
___cache_free+0x33e/0x350 mm/slub.c:3499
qlink_free mm/kasan/quarantine.c:146 [inline]
qlist_free_all+0x5e/0xd0 mm/kasan/quarantine.c:165
kasan_quarantine_reduce+0x180/0x200 mm/kasan/quarantine.c:272
__kasan_slab_alloc+0x9d/0xb0 mm/kasan/common.c:444
kasan_slab_alloc include/linux/kasan.h:254 [inline]
slab_post_alloc_hook mm/slab.h:519 [inline]
slab_alloc_node mm/slub.c:3213 [inline]
slab_alloc mm/slub.c:3221 [inline]
kmem_cache_alloc+0x21b/0x3a0 mm/slub.c:3226
getname_flags.part.0+0x3c/0x310 fs/namei.c:138
getname_flags include/linux/audit.h:319 [inline]
getname+0x5f/0x90 fs/namei.c:217
do_sys_openat2+0xf6/0x3d0 fs/open.c:1194
Memory state around the buggy address:
ffff88801659c500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88801659c580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88801659c600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff88801659c680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88801659c700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
======================================================
Wishing you a nice day!
Best regards,
Ditto
Best regards,
Ditto
Attachment:
fuzz_config
Description: Binary data
Attachment:
repro.cprog
Description: Binary data
Attachment:
repro.prog
Description: Binary data
