KASAN: slab-use-after-free Read in disable_device

Status: upstream: reported C repro on 2026/08/17 02:58
Subsystems: kernel
Labels: prio:high actionable
[Documentation on labels]
Reported-by: syzbot+4393dfdddf166f2de2b0@syzkaller.appspotmail.com
First crash: 63d, last: 10m
▶ ▼ ✨ AI Jobs (3)
ID Workflow Result Correct Bug Created Started Finished Revision
cf815674 patching 💥 KASAN: slab-use-after-free Read in disable_device 2026/09/13 16:50 2026/09/13 16:50 2026/09/13 17:08 70a60e12
ae15561f moderation Actionable: ✅ ❓ KASAN: slab-use-after-free Read in disable_device 2026/08/17 02:15 2026/08/17 02:15 2026/08/17 02:57 746171ee
3d0cefb4 assessment-security DenialOfService: ✅ Exploitable: ✅ FilesystemTrigger: ❌ NetworkTrigger: ❌ PeripheralTrigger: ✅ RemoteTrigger: ❌ Unprivileged: ❌ UserNamespace: ❌ VMGuestTrigger: ❌ VMHostTrigger: ❌ ❓ KASAN: slab-use-after-free Read in disable_device 2026/08/14 00:12 2026/08/14 00:12 2026/08/14 00:17 0165196a
▶ ▼ Discussions (5)
Title Replies (including bot) Last reply
[PATCH v3] kobject: fix uevent socket use-after-free on net namespace delete 4 (4) 2026/09/18 09:43
Re: [PATCH v2] kobject: fix uevent socket use-after-free on net namespace delete 1 (1) 2026/09/17 17:40
[PATCH] kobject: fix uevent socket use-after-free on net namespace delete 3 (3) 2026/09/17 17:08
[syzbot] [kernel?] KASAN: slab-use-after-free Read in disable_device 0 (4) 2026/09/17 16:48
Re: [PATCH] kobject: fix uevent socket use-after-free on net namespace delete 3 (3) 2026/09/17 15:21
▶ ▼ Last patch testing requests (2)
Created Duration User Patch Repo Result
2026/09/17 16:48 13m adarshdas950@gmail.com patch upstream OK job log log
2026/09/17 16:29 13m adarshdas950@gmail.com upstream report job log log

Sample crash report:
smbdirect: ib_dev[rxe10] removed
======================
==================================================================
BUG: KASAN: slab-use-after-free in kobject_uevent_net_broadcast lib/kobject_uevent.c:415 [inline]
BUG: KASAN: slab-use-after-free in kobject_uevent_env+0x1383/0x18b0 lib/kobject_uevent.c:611
Read of size 8 at addr ffff8880386e9fd0 by task kworker/u33:4/75

CPU: 3 UID: 0 PID: 75 Comm: kworker/u33:4 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Workqueue: ib-unreg-wq ib_unregister_work
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:378 [inline]
 print_report+0x13d/0x4b0 mm/kasan/report.c:482
 kasan_report+0xdf/0x1c0 mm/kasan/report.c:595
 kobject_uevent_net_broadcast lib/kobject_uevent.c:415 [inline]
 kobject_uevent_env+0x1383/0x18b0 lib/kobject_uevent.c:611
 device_del+0x605/0x9b0 drivers/base/core.c:3983
 remove_one_compat_dev drivers/infiniband/core/device.c:1036 [inline]
 remove_compat_devs drivers/infiniband/core/device.c:1047 [inline]
 disable_device+0x1ea/0x280 drivers/infiniband/core/device.c:1339
 __ib_unregister_device+0x2b4/0x480 drivers/infiniband/core/device.c:1571
 ib_unregister_work+0x19/0x30 drivers/infiniband/core/device.c:1683
 process_one_work+0xac7/0x1b10 kernel/workqueue.c:3396
 process_scheduled_works kernel/workqueue.c:3479 [inline]
 worker_thread+0x5ef/0xe50 kernel/workqueue.c:3560
 kthread+0x373/0x450 kernel/kthread.c:436
 ret_from_fork+0x730/0xd60 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>

Allocated by task 6226:
 kasan_save_stack+0x30/0x50 mm/kasan/common.c:57
 kasan_save_track+0x14/0x30 mm/kasan/common.c:78
 poison_kmalloc_redzone mm/kasan/common.c:398 [inline]
 __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:415
 kasan_kmalloc include/linux/kasan.h:263 [inline]
 __kmalloc_cache_noprof+0x2f8/0x6d0 mm/slub.c:5563
 _kmalloc_noprof include/linux/slab.h:991 [inline]
 _kzalloc_noprof include/linux/slab.h:1312 [inline]
 uevent_net_init+0xd3/0x330 lib/kobject_uevent.c:782
 ops_init+0x1e2/0x5f0 net/core/net_namespace.c:137
 setup_net+0x118/0x3a0 net/core/net_namespace.c:443
 copy_net_ns+0x345/0x7a0 net/core/net_namespace.c:582
 create_new_namespaces+0x3ea/0xac0 kernel/nsproxy.c:132
 unshare_nsproxy_namespaces+0xf2/0x220 kernel/nsproxy.c:234
 ksys_unshare+0x4a2/0xa70 kernel/fork.c:3292
 __do_sys_unshare kernel/fork.c:3356 [inline]
 __se_sys_unshare kernel/fork.c:3354 [inline]
 __x64_sys_unshare+0x31/0x40 kernel/fork.c:3354
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x123/0x790 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 5751:
 kasan_save_stack+0x30/0x50 mm/kasan/common.c:57
 kasan_save_track+0x14/0x30 mm/kasan/common.c:78
 kasan_save_free_info+0x3b/0x70 mm/kasan/generic.c:584
 poison_slab_object mm/kasan/common.c:253 [inline]
 __kasan_slab_free+0x5f/0x80 mm/kasan/common.c:285
 kasan_slab_free include/linux/kasan.h:235 [inline]
 slab_free_hook mm/slub.c:2748 [inline]
 slab_free mm/slub.c:6508 [inline]
 kfree+0x22b/0x6d0 mm/slub.c:6801
 ops_exit_list net/core/net_namespace.c:200 [inline]
 ops_undo_list+0x2ee/0xab0 net/core/net_namespace.c:253
 cleanup_net+0x499/0x920 net/core/net_namespace.c:706
 process_one_work+0xac7/0x1b10 kernel/workqueue.c:3396
 process_scheduled_works kernel/workqueue.c:3479 [inline]
 worker_thread+0x5ef/0xe50 kernel/workqueue.c:3560
 kthread+0x373/0x450 kernel/kthread.c:436
 ret_from_fork+0x730/0xd60 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

The buggy address belongs to the object at ffff8880386e9fc0
 which belongs to the cache kmalloc-32 of size 32
The buggy address is located 16 bytes inside of
 freed 32-byte region [ffff8880386e9fc0, ffff8880386e9fe0)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880386e9980 pfn:0x386e9
flags: 0xfff00000000200(workingset|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000200 ffff88801c042780 ffffea0000d14c90 ffffea0000dfb110
raw: ffff8880386e9980 000000000040003e 00000000f5000000 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0xd2800(GFP_NOWAIT|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 4516, tgid 4516 (kworker/u33:10), ts 10789616045
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook+0xfd/0x120 mm/page_alloc.c:1871
 prep_new_page mm/page_alloc.c:1879 [inline]
 get_page_from_freelist+0x110d/0x35d0 mm/page_alloc.c:3943
 __alloc_frozen_pages_noprof+0x2eb/0x3300 mm/page_alloc.c:5436
 alloc_slab_page mm/slub.c:3347 [inline]
 allocate_slab mm/slub.c:3462 [inline]
 new_slab+0xa9/0x6e0 mm/slub.c:3513
 refill_objects+0xe3/0x410 mm/slub.c:7417
 refill_sheaf mm/slub.c:2885 [inline]
 __pcs_replace_empty_main+0x35e/0x650 mm/slub.c:4774
 alloc_from_pcs mm/slub.c:4850 [inline]
 slab_alloc_node mm/slub.c:4984 [inline]
 __kmalloc_cache_noprof+0x4f4/0x6d0 mm/slub.c:5559
 _kmalloc_noprof include/linux/slab.h:991 [inline]
 slab_free_hook mm/slub.c:2700 [inline]
 slab_free mm/slub.c:6508 [inline]
 kmem_cache_free+0x40f/0x6c0 mm/slub.c:6635
 __cleanup_sighand kernel/fork.c:1723 [inline]
 __cleanup_sighand+0x6a/0xa0 kernel/fork.c:1715
 __exit_signal kernel/exit.c:222 [inline]
 release_task+0xcb8/0x1b80 kernel/exit.c:272
 exit_notify kernel/exit.c:812 [inline]
 do_exit+0x13ba/0x2ae0 kernel/exit.c:1023
 call_usermodehelper_exec_async+0x35d/0x4b0 kernel/umh.c:120
 ret_from_fork+0x730/0xd60 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
page_owner free stack trace missing

Memory state around the buggy address:
 ffff8880386e9e80: 00 00 00 00 fc fc fc fc fa fb fb fb fc fc fc fc
 ffff8880386e9f00: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
>ffff8880386e9f80: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
                                                 ^
 ffff8880386ea000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8880386ea080: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
==================================================================

Crashes (105):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/09/13 15:53 git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 2f0c1cf72f46 70a60e12 .config console log report C ci-qemu-upstream KASAN: slab-use-after-free Read in disable_device
2026/10/04 20:57 upstream 6addb4f38557 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root KASAN: slab-use-after-free Read in disable_device
2026/09/30 15:22 upstream 551c722f4080 892a21ec .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root KASAN: slab-use-after-free Read in disable_device
2026/09/10 04:13 upstream 50d05c7c76c9 4e8b1cc6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root KASAN: slab-use-after-free Read in disable_device
2026/10/01 14:09 upstream 551c722f4080 38f7f0d1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root KASAN: slab-use-after-free Read in disable_device
2026/09/28 01:26 upstream d266640c6c76 a3c7249d .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root KASAN: slab-use-after-free Read in disable_device
2026/09/24 03:12 upstream 62f4c998b297 0a1606bc .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream KASAN: slab-use-after-free Read in disable_device
2026/09/13 12:39 upstream 50d05c7c76c9 70a60e12 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 KASAN: slab-use-after-free Read in disable_device
2026/08/24 11:18 upstream 0a0d1d55dad5 b55bd4c3 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 KASAN: slab-use-after-free Read in disable_device
2026/10/14 07:04 bpf ff47652a4b66 7321cd29 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce KASAN: slab-use-after-free Read in disable_device
2026/10/11 23:37 bpf ff47652a4b66 4f92358f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce KASAN: slab-use-after-free Read in disable_device
2026/10/10 00:20 bpf ff47652a4b66 a8add9cd .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce KASAN: slab-use-after-free Read in disable_device
2026/10/08 21:18 bpf ff47652a4b66 4f6a9fcf .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce KASAN: slab-use-after-free Read in disable_device
2026/10/06 19:45 bpf ff47652a4b66 f7710056 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce KASAN: slab-use-after-free Read in disable_device
2026/10/06 01:49 bpf ff47652a4b66 1995e6c7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce KASAN: slab-use-after-free Read in disable_device
2026/10/04 12:15 net 6dc989ea46b9 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce KASAN: slab-use-after-free Read in disable_device
2026/10/03 12:28 bpf ff47652a4b66 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce KASAN: slab-use-after-free Read in disable_device
2026/10/03 09:35 bpf ff47652a4b66 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce KASAN: slab-use-after-free Read in disable_device
2026/10/02 19:53 net 71a77ab76e74 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce KASAN: slab-use-after-free Read in disable_device
2026/10/01 08:24 bpf 564b7e8e09ec 38f7f0d1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce KASAN: slab-use-after-free Read in disable_device
2026/09/29 10:20 bpf 564b7e8e09ec 7bf4ea23 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce KASAN: slab-use-after-free Read in disable_device
2026/09/28 19:27 bpf ab39974240a0 a3c7249d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce KASAN: slab-use-after-free Read in disable_device
2026/09/27 05:55 bpf ab39974240a0 a3c7249d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce KASAN: slab-use-after-free Read in disable_device
2026/09/24 16:43 bpf 8110ba097778 3c3cdf19 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce KASAN: slab-use-after-free Read in disable_device
2026/09/23 21:17 net 9c572a83037a 0a1606bc .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce KASAN: slab-use-after-free Read in disable_device
2026/09/23 07:08 bpf a9e86dd9de4f abce1216 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce KASAN: slab-use-after-free Read in disable_device
2026/09/22 14:37 bpf 0b6e06f9501a e12281bd .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce KASAN: slab-use-after-free Read in disable_device
2026/09/21 14:16 bpf a11212910cf0 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce KASAN: slab-use-after-free Read in disable_device
2026/09/21 10:42 bpf a11212910cf0 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce KASAN: slab-use-after-free Read in disable_device
2026/09/21 09:07 bpf a11212910cf0 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce KASAN: slab-use-after-free Read in disable_device
2026/09/21 08:30 bpf a11212910cf0 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce KASAN: slab-use-after-free Read in disable_device
2026/09/20 17:23 bpf a11212910cf0 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce KASAN: slab-use-after-free Read in disable_device
2026/09/20 14:57 bpf a11212910cf0 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce KASAN: slab-use-after-free Read in disable_device
2026/09/19 21:25 bpf e3b6cb020e2f 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce KASAN: slab-use-after-free Read in disable_device
2026/09/19 15:14 bpf e3b6cb020e2f 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce KASAN: slab-use-after-free Read in disable_device
2026/09/18 04:46 bpf 70504de0bb62 8d7d05f1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce KASAN: slab-use-after-free Read in disable_device
2026/10/14 17:02 bpf-next 763187dbbf83 7321cd29 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce KASAN: slab-use-after-free Read in disable_device
2026/10/14 01:05 bpf-next 763187dbbf83 7321cd29 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce KASAN: slab-use-after-free Read in disable_device
2026/10/13 06:09 bpf-next 0d5e3fc78a6f 745a967f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce KASAN: slab-use-after-free Read in disable_device
2026/10/11 04:22 bpf-next 6335e6719fd3 4f92358f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce KASAN: slab-use-after-free Read in disable_device
2026/10/10 17:49 bpf-next 6335e6719fd3 4f92358f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce KASAN: slab-use-after-free Read in disable_device
2026/10/09 11:08 bpf-next e1d84a37cba9 b2734a59 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce KASAN: slab-use-after-free Read in disable_device
2026/10/09 04:33 net-next 3f65f6ff8594 b2734a59 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce KASAN: slab-use-after-free Read in disable_device
2026/10/08 04:18 bpf-next e1d84a37cba9 6520ecdb .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce KASAN: slab-use-after-free Read in disable_device
2026/10/07 22:22 net-next 45ad84d2800e 6520ecdb .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce KASAN: slab-use-after-free Read in disable_device
2026/10/04 19:48 bpf-next 99dc1ba54242 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce KASAN: slab-use-after-free Read in disable_device
2026/09/27 10:29 net-next 014d795c7383 a3c7249d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce KASAN: slab-use-after-free Read in disable_device
2026/09/24 07:12 bpf-next 91f8613d95ad 0a1606bc .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce KASAN: slab-use-after-free Read in disable_device
2026/09/22 06:18 bpf-next 79dc258c9392 e12281bd .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce KASAN: slab-use-after-free Read in disable_device
2026/09/21 04:12 bpf-next b99f71407ce5 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce KASAN: slab-use-after-free Read in disable_device
2026/09/20 16:20 bpf-next b99f71407ce5 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce KASAN: slab-use-after-free Read in disable_device
2026/09/20 00:56 bpf-next b99f71407ce5 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce KASAN: slab-use-after-free Read in disable_device
2026/09/19 19:49 bpf-next 011a2968cf49 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-bpf-next-kasan-gce KASAN: slab-use-after-free Read in disable_device
2026/09/19 07:43 net-next e3bfd25626b4 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce KASAN: slab-use-after-free Read in disable_device
2026/09/18 13:00 net-next 26ee8cd69d46 8d7d05f1 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce KASAN: slab-use-after-free Read in disable_device
2026/08/29 11:15 net-next 1b78070aaef6 2f52988a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce KASAN: slab-use-after-free Read in disable_device
2026/10/04 10:16 linux-next f0406245cb98 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce KASAN: slab-use-after-free Read in disable_device
2026/10/02 22:18 linux-next 9f24d789f03b 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root KASAN: slab-use-after-free Read in disable_device
2026/09/26 11:38 linux-next f5f84daefcd9 a3c7249d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root KASAN: slab-use-after-free Read in disable_device
2026/08/24 21:10 linux-next 4b18edbd8e70 23caa175 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce KASAN: slab-use-after-free Read in disable_device
2026/08/12 13:46 linux-next 5e6de6a2b522 7ae4acc7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root KASAN: slab-use-after-free Read in disable_device
* Struck through repros no longer work on HEAD.