syzbot


KASAN: use-after-free Read in worker_thread

Status: upstream: reported C repro on 2022/10/16 06:28
Bug presence: origin:downstream
Labels: missing-backport
[Documentation on labels]
Reported-by: syzbot+fba752ecc3518c5219a0@syzkaller.appspotmail.com
First crash: 529d, last: 25d
Cause bisection: introduced by (bisect log) [merge commit]:
commit 8fd5b33ea5530f89372a9130d47ac81dab24bda5
Author: Greg Kroah-Hartman <gregkh@google.com>
Date: Fri Aug 19 09:19:46 2022 +0000

  Merge 5.15.61 into android13-5.15-lts

Crash: KASAN: use-after-free Read in worker_thread (log)
Repro: C syz .config
  
Fix bisection: failed (error log, bisect log)
  
Bug presence (3)
Date Name Commit Repro Result
2023/09/13 android13-5.15-lts (ToT) ea586874d2f9 C [report] KASAN: use-after-free Read in worker_thread
2023/09/13 lts (merge base) aff03380bda4 C Didn't crash
2023/09/13 upstream (ToT) 3669558bdf35 C Didn't crash
Similar bugs (6)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream KASAN: use-after-free Read in worker_thread (2) net syz 6 2323d 2332d 5/26 fixed on 2018/04/06 16:37
upstream KASAN: use-after-free Read in worker_thread 2 2387d 2344d 0/26 closed as invalid on 2017/10/27 09:33
android-6-1 KASAN: use-after-free Read in worker_thread missing-backport origin:lts C error 12 10d 288d 0/2 upstream: reported C repro on 2023/06/14 05:51
upstream general protection fault in worker_thread kernel 1 544d 540d 0/26 auto-obsoleted due to no activity on 2022/12/30 10:32
upstream KMSAN: uninit-value in worker_thread (3) ext4 2 909d 992d 0/26 auto-closed as invalid on 2021/12/30 14:37
upstream general protection fault in worker_thread (2) io-uring syz 1 281d 277d 0/26 auto-obsoleted due to no activity on 2023/09/29 13:47
Last patch testing requests (20)
Created Duration User Patch Repo Result
2024/03/03 01:20 11m retest repro android13-5.15-lts report log
2024/02/15 21:27 15m retest repro android13-5.15-lts report log
2024/02/15 21:27 8m retest repro android13-5.15-lts report log
2024/02/01 20:28 9m retest repro android13-5.15-lts report log
2024/02/01 20:28 9m retest repro android13-5.15-lts report log
2024/02/01 20:28 13m retest repro android13-5.15-lts report log
2024/02/01 20:28 10m retest repro android13-5.15-lts report log
2024/02/01 20:28 5m retest repro android13-5.15-lts report log
2024/01/18 19:49 19m retest repro android13-5.15-lts report log
2024/01/18 19:49 32m retest repro android13-5.15-lts report log
2023/04/12 08:16 26m tudor.ambarus@linaro.org android13-5.15-lts report log
2022/12/15 03:30 13m jun.nie@linaro.org patch https://android.googlesource.com/kernel/common 83399dcc1f2502c report log
2022/12/14 09:44 11m jun.nie@linaro.org https://android.googlesource.com/kernel/common 83399dcc1f2502c report log
2022/11/28 15:38 17m jun.nie@linaro.org https://android.googlesource.com/kernel/common 374bf3fc1f53c OK log
2022/11/28 09:20 19m jun.nie@linaro.org https://android.googlesource.com/kernel/common 0b7f5d7a4d2a OK log
2022/11/28 01:18 16m jun.nie@linaro.org https://android.googlesource.com/kernel/common 70f70d54f06b OK log
2022/11/26 13:59 16m jun.nie@linaro.org https://android.googlesource.com/kernel/common 6d8e185bf9de OK log
2022/11/26 02:45 5m jun.nie@linaro.org https://android.googlesource.com/kernel/common a24f05f7ced7 error OK
2022/11/25 08:23 16m jun.nie@linaro.org https://android.googlesource.com/kernel/common 7217df81279835a7a OK log
2022/11/24 03:20 15m jun.nie@linaro.org upstream report log
Fix bisection attempts (2)
Created Duration User Patch Repo Result
2023/03/20 11:44 0m bisect fix android13-5.15-lts error job log (0)
2023/02/18 10:55 32m bisect fix android13-5.15-lts job log (0) log

Sample crash report:
==================================================================
BUG: KASAN: use-after-free in worker_thread+0xaaa/0x12a0 kernel/workqueue.c:2462
Read of size 8 at addr ffff8881057b8c60 by task kworker/1:7/324

CPU: 1 PID: 324 Comm: kworker/1:7 Not tainted 5.15.143-syzkaller-01112-g92ec34b6c034 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Workqueue:  0x0 (mm_percpu_wq)
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x151/0x1b7 lib/dump_stack.c:106
 print_address_description+0x87/0x3b0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:427 [inline]
 kasan_report+0x179/0x1c0 mm/kasan/report.c:444
 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report_generic.c:309
 worker_thread+0xaaa/0x12a0 kernel/workqueue.c:2462
 kthread+0x421/0x510 kernel/kthread.c:337
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
 </TASK>

Allocated by task 39:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:45 [inline]
 set_alloc_info mm/kasan/common.c:433 [inline]
 ____kasan_kmalloc+0xdb/0x110 mm/kasan/common.c:512
 __kasan_kmalloc+0x9/0x10 mm/kasan/common.c:521
 kasan_kmalloc include/linux/kasan.h:227 [inline]
 __kmalloc+0x13a/0x270 mm/slub.c:4427
 __kmalloc_node include/linux/slab.h:469 [inline]
 kmalloc_node include/linux/slab.h:626 [inline]
 kvmalloc_node+0x1f0/0x4d0 mm/util.c:628
 kvmalloc include/linux/mm.h:851 [inline]
 kvzalloc include/linux/mm.h:859 [inline]
 alloc_netdev_mqs+0x8c/0xc90 net/core/dev.c:10852
 alloc_etherdev_mqs+0x33/0x40 net/ethernet/eth.c:393
 usbnet_probe+0x1ff/0x2830 drivers/net/usb/usbnet.c:1694
 usb_probe_interface+0x5b6/0xa90 drivers/usb/core/driver.c:396
 really_probe+0x28d/0x970 drivers/base/dd.c:595
 __driver_probe_device+0x1a0/0x310 drivers/base/dd.c:755
 driver_probe_device+0x54/0x3d0 drivers/base/dd.c:785
 __device_attach_driver+0x2c5/0x470 drivers/base/dd.c:907
 bus_for_each_drv+0x183/0x200 drivers/base/bus.c:427
 __device_attach+0x312/0x510 drivers/base/dd.c:979
 device_initial_probe+0x1a/0x20 drivers/base/dd.c:1028
 bus_probe_device+0xbe/0x1e0 drivers/base/bus.c:487
 device_add+0xb60/0xf10 drivers/base/core.c:3404
 usb_set_configuration+0x190f/0x1e80 drivers/usb/core/message.c:2165
 usb_generic_driver_probe+0x8b/0x150 drivers/usb/core/generic.c:238
 usb_probe_device+0x144/0x260 drivers/usb/core/driver.c:293
 really_probe+0x28d/0x970 drivers/base/dd.c:595
 __driver_probe_device+0x1a0/0x310 drivers/base/dd.c:755
 driver_probe_device+0x54/0x3d0 drivers/base/dd.c:785
 __device_attach_driver+0x2c5/0x470 drivers/base/dd.c:907
 bus_for_each_drv+0x183/0x200 drivers/base/bus.c:427
 __device_attach+0x312/0x510 drivers/base/dd.c:979
 device_initial_probe+0x1a/0x20 drivers/base/dd.c:1028
 bus_probe_device+0xbe/0x1e0 drivers/base/bus.c:487
 device_add+0xb60/0xf10 drivers/base/core.c:3404
 usb_new_device+0x1034/0x1bf0 drivers/usb/core/hub.c:2582
 hub_port_connect drivers/usb/core/hub.c:5495 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5635 [inline]
 port_event drivers/usb/core/hub.c:5785 [inline]
 hub_event+0x2def/0x4770 drivers/usb/core/hub.c:5867
 process_one_work+0x6bb/0xc10 kernel/workqueue.c:2317
 process_scheduled_works kernel/workqueue.c:2380 [inline]
 worker_thread+0xe02/0x12a0 kernel/workqueue.c:2466
 kthread+0x421/0x510 kernel/kthread.c:337
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298

Freed by task 39:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:45
 kasan_set_free_info+0x23/0x40 mm/kasan/generic.c:370
 ____kasan_slab_free+0x126/0x160 mm/kasan/common.c:365
 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:373
 kasan_slab_free include/linux/kasan.h:193 [inline]
 slab_free_hook mm/slub.c:1723 [inline]
 slab_free_freelist_hook+0xbd/0x190 mm/slub.c:1749
 slab_free mm/slub.c:3519 [inline]
 kfree+0xc8/0x220 mm/slub.c:4579
 kvfree+0x35/0x40 mm/util.c:664
 netdev_freemem+0x3f/0x60 net/core/dev.c:10806
 netdev_release+0x7f/0xb0 net/core/net-sysfs.c:1903
 device_release+0x95/0x1c0
 kobject_cleanup lib/kobject.c:713 [inline]
 kobject_release lib/kobject.c:744 [inline]
 kref_put include/linux/kref.h:65 [inline]
 kobject_put+0x178/0x260 lib/kobject.c:761
 put_device+0x1f/0x30 drivers/base/core.c:3512
 free_netdev+0x34f/0x440 net/core/dev.c:10992
 usbnet_disconnect+0x245/0x390 drivers/net/usb/usbnet.c:1633
 usb_unbind_interface+0x1fa/0x8c0 drivers/usb/core/driver.c:458
 __device_release_driver drivers/base/dd.c:1229 [inline]
 device_release_driver_internal+0x50b/0x7d0 drivers/base/dd.c:1262
 device_release_driver+0x19/0x20 drivers/base/dd.c:1285
 bus_remove_device+0x2f8/0x360 drivers/base/bus.c:529
 device_del+0x663/0xe90 drivers/base/core.c:3592
 usb_disable_device+0x380/0x720 drivers/usb/core/message.c:1414
 usb_disconnect+0x32a/0x890 drivers/usb/core/hub.c:2240
 hub_port_connect drivers/usb/core/hub.c:5334 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5635 [inline]
 port_event drivers/usb/core/hub.c:5785 [inline]
 hub_event+0x1d42/0x4770 drivers/usb/core/hub.c:5867
 process_one_work+0x6bb/0xc10 kernel/workqueue.c:2317
 process_scheduled_works kernel/workqueue.c:2380 [inline]
 worker_thread+0xe02/0x12a0 kernel/workqueue.c:2466
 kthread+0x421/0x510 kernel/kthread.c:337
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298

Last potentially related work creation:
 kasan_save_stack+0x3b/0x60 mm/kasan/common.c:38
 __kasan_record_aux_stack+0xd3/0xf0 mm/kasan/generic.c:348
 kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:358
 insert_work+0x56/0x320 kernel/workqueue.c:1373
 __queue_work+0x92a/0xcd0 kernel/workqueue.c:1539
 queue_work_on+0x105/0x170 kernel/workqueue.c:1566
 usbnet_link_change+0xeb/0x100
 usbnet_probe+0x1dd3/0x2830 drivers/net/usb/usbnet.c:1841
 usb_probe_interface+0x5b6/0xa90 drivers/usb/core/driver.c:396
 really_probe+0x28d/0x970 drivers/base/dd.c:595
 __driver_probe_device+0x1a0/0x310 drivers/base/dd.c:755
 driver_probe_device+0x54/0x3d0 drivers/base/dd.c:785
 __device_attach_driver+0x2c5/0x470 drivers/base/dd.c:907
 bus_for_each_drv+0x183/0x200 drivers/base/bus.c:427
 __device_attach+0x312/0x510 drivers/base/dd.c:979
 device_initial_probe+0x1a/0x20 drivers/base/dd.c:1028
 bus_probe_device+0xbe/0x1e0 drivers/base/bus.c:487
 device_add+0xb60/0xf10 drivers/base/core.c:3404
 usb_set_configuration+0x190f/0x1e80 drivers/usb/core/message.c:2165
 usb_generic_driver_probe+0x8b/0x150 drivers/usb/core/generic.c:238
 usb_probe_device+0x144/0x260 drivers/usb/core/driver.c:293
 really_probe+0x28d/0x970 drivers/base/dd.c:595
 __driver_probe_device+0x1a0/0x310 drivers/base/dd.c:755
 driver_probe_device+0x54/0x3d0 drivers/base/dd.c:785
 __device_attach_driver+0x2c5/0x470 drivers/base/dd.c:907
 bus_for_each_drv+0x183/0x200 drivers/base/bus.c:427
 __device_attach+0x312/0x510 drivers/base/dd.c:979
 device_initial_probe+0x1a/0x20 drivers/base/dd.c:1028
 bus_probe_device+0xbe/0x1e0 drivers/base/bus.c:487
 device_add+0xb60/0xf10 drivers/base/core.c:3404
 usb_new_device+0x1034/0x1bf0 drivers/usb/core/hub.c:2582
 hub_port_connect drivers/usb/core/hub.c:5495 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5635 [inline]
 port_event drivers/usb/core/hub.c:5785 [inline]
 hub_event+0x2def/0x4770 drivers/usb/core/hub.c:5867
 process_one_work+0x6bb/0xc10 kernel/workqueue.c:2317
 process_scheduled_works kernel/workqueue.c:2380 [inline]
 worker_thread+0xe02/0x12a0 kernel/workqueue.c:2466
 kthread+0x421/0x510 kernel/kthread.c:337
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298

The buggy address belongs to the object at ffff8881057b8000
 which belongs to the cache kmalloc-4k of size 4096
The buggy address is located 3168 bytes inside of
 4096-byte region [ffff8881057b8000, ffff8881057b9000)
The buggy address belongs to the page:
page:ffffea000415ee00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1057b8
head:ffffea000415ee00 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x4000000000010200(slab|head|zone=1)
raw: 4000000000010200 0000000000000000 0000000300000001 ffff888100043380
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 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 332, ts 82178983650, free_ts 81280790874
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook+0x1a3/0x1b0 mm/page_alloc.c:2604
 prep_new_page+0x1b/0x110 mm/page_alloc.c:2610
 get_page_from_freelist+0x3550/0x35d0 mm/page_alloc.c:4484
 __alloc_pages+0x27e/0x8f0 mm/page_alloc.c:5776
 allocate_slab mm/slub.c:1932 [inline]
 new_slab+0x9a/0x4e0 mm/slub.c:1995
 ___slab_alloc+0x39e/0x830 mm/slub.c:3028
 __slab_alloc+0x4a/0x90 mm/slub.c:3115
 slab_alloc_node mm/slub.c:3206 [inline]
 slab_alloc mm/slub.c:3248 [inline]
 kmem_cache_alloc_trace+0x142/0x210 mm/slub.c:3265
 kmalloc include/linux/slab.h:603 [inline]
 kzalloc include/linux/slab.h:733 [inline]
 uevent_show+0x160/0x310 drivers/base/core.c:2398
 dev_attr_show+0x56/0xd0 drivers/base/core.c:2105
 sysfs_kf_seq_show+0x265/0x3e0 fs/sysfs/file.c:61
 kernfs_seq_show+0x119/0x160 fs/kernfs/file.c:168
 seq_read_iter+0x430/0xd00 fs/seq_file.c:230
 kernfs_fop_read_iter+0x145/0x470 fs/kernfs/file.c:241
 call_read_iter include/linux/fs.h:2196 [inline]
 new_sync_read fs/read_write.c:404 [inline]
 vfs_read+0xa7e/0xd40 fs/read_write.c:485
 ksys_read+0x199/0x2c0 fs/read_write.c:623
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:26 [inline]
 free_pages_prepare mm/page_alloc.c:1471 [inline]
 free_pcp_prepare mm/page_alloc.c:1543 [inline]
 free_unref_page_prepare+0x7c8/0x7d0 mm/page_alloc.c:3533
 free_unref_page+0xe8/0x750 mm/page_alloc.c:3615
 free_the_page mm/page_alloc.c:804 [inline]
 __free_pages+0x61/0xf0 mm/page_alloc.c:5852
 __free_slab+0xec/0x1d0 mm/slub.c:2020
 free_slab mm/slub.c:2035 [inline]
 discard_slab mm/slub.c:2041 [inline]
 __unfreeze_partials+0x165/0x1a0 mm/slub.c:2527
 put_cpu_partial+0xc4/0x120 mm/slub.c:2607
 __slab_free+0x1c8/0x290 mm/slub.c:3388
 do_slab_free mm/slub.c:3507 [inline]
 ___cache_free+0x109/0x120 mm/slub.c:3526
 qlink_free+0x4d/0x90 mm/kasan/quarantine.c:157
 qlist_free_all+0x44/0xb0 mm/kasan/quarantine.c:176
 kasan_quarantine_reduce+0x15a/0x180 mm/kasan/quarantine.c:283
 __kasan_slab_alloc+0x2f/0xe0 mm/kasan/common.c:443
 kasan_slab_alloc include/linux/kasan.h:217 [inline]
 slab_post_alloc_hook+0x53/0x2c0 mm/slab.h:550
 slab_alloc_node mm/slub.c:3240 [inline]
 slab_alloc mm/slub.c:3248 [inline]
 kmem_cache_alloc+0xf5/0x200 mm/slub.c:3253
 getname_flags+0xba/0x520 fs/namei.c:138
 user_path_at_empty+0x2d/0x1a0 fs/namei.c:2852

Memory state around the buggy address:
 ffff8881057b8b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8881057b8b80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8881057b8c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                       ^
 ffff8881057b8c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8881057b8d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================

Crashes (22):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/01/04 19:45 android13-5.15-lts 92ec34b6c034 28c42cff .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 KASAN: use-after-free Read in worker_thread
2023/12/09 23:35 android13-5.15-lts b1355f1607d5 28b24332 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 KASAN: use-after-free Read in worker_thread
2023/10/28 06:42 android13-5.15-lts 61cfd264993d 3c418d72 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 KASAN: use-after-free Read in worker_thread
2023/10/02 04:37 android13-5.15-lts ea586874d2f9 8e26a358 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 KASAN: use-after-free Read in worker_thread
2023/09/24 03:37 android13-5.15-lts ea586874d2f9 0b6a67ac .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 KASAN: use-after-free Read in worker_thread
2023/06/14 05:35 android13-5.15-lts 19c0ed55a470 d2ee9228 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 KASAN: use-after-free Read in worker_thread
2023/05/22 01:02 android13-5.15-lts 19c0ed55a470 4bce1a3e .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 KASAN: use-after-free Read in worker_thread
2023/05/07 16:28 android13-5.15-lts 19c0ed55a470 90c93c40 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 KASAN: use-after-free Read in worker_thread
2022/11/23 14:01 android13-5.15-lts 4ec71a9ec769 52fdf57a .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 KASAN: use-after-free Read in worker_thread
2022/10/24 14:46 android13-5.15-lts 7f2e600bf63a faae2fda .config strace log report syz C [disk image] [vmlinux] ci2-android-5-15 KASAN: use-after-free Read in worker_thread
2022/10/21 12:18 android13-5.15-lts 7f2e600bf63a 63e790dd .config strace log report syz C [disk image] [vmlinux] ci2-android-5-15 KASAN: use-after-free Read in worker_thread
2022/10/16 06:27 android13-5.15-lts 44b8b2ac1d96 67cb024c .config strace log report syz C [disk image] [vmlinux] ci2-android-5-15 KASAN: use-after-free Read in worker_thread
2023/10/01 02:44 android13-5.15-lts ea586874d2f9 8e26a358 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 KASAN: use-after-free Read in worker_thread
2023/07/14 04:43 android13-5.15-lts 879959450ec7 d624500f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 KASAN: use-after-free Read in worker_thread
2023/07/11 09:15 android13-5.15-lts 879959450ec7 f8780940 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 KASAN: use-after-free Read in worker_thread
2023/06/27 09:40 android13-5.15-lts 36c485619a95 4cd5bb25 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 KASAN: use-after-free Read in worker_thread
2023/05/21 18:48 android13-5.15-lts 19c0ed55a470 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 KASAN: use-after-free Read in worker_thread
2023/05/07 15:24 android13-5.15-lts 19c0ed55a470 90c93c40 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 KASAN: use-after-free Read in worker_thread
2023/05/06 17:14 android13-5.15-lts 19c0ed55a470 90c93c40 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 KASAN: use-after-free Read in worker_thread
2023/04/21 01:11 android13-5.15-lts 7364b7abbafb 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 KASAN: use-after-free Read in worker_thread
2023/01/19 10:16 android13-5.15-lts c73b4619ad86 66fca3ae .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 KASAN: use-after-free Read in worker_thread
2022/12/15 00:05 android13-5.15-lts c73b4619ad86 b18f0a64 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 KASAN: use-after-free Read in worker_thread
* Struck through repros no longer work on HEAD.