KASAN: use-after-free Write in steam_input_close (2)

Status: auto-obsoleted due to no activity on 2025/12/14 10:06
Reported-by: syzbot+0f7aedb61332cc19f63d@syzkaller.appspotmail.com
First crash: 313d, last: 313d
▶ ▼ Similar bugs (7)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-6-1 KASAN: use-after-free Write in steam_input_close 22 1 669d 669d 0/2 auto-obsoleted due to no activity on 2024/12/23 19:41
android-5-10 KASAN: use-after-free Write in steam_input_close 22 C 23 4d20h 655d 0/2 upstream: reported C repro on 2024/10/08 20:27
android-5-15 KASAN: use-after-free Write in steam_input_close origin:lts 22 C error 3 389d 686d 0/2 upstream: reported C repro on 2024/09/08 05:16
android-54 KASAN: use-after-free Write in steam_input_close 22 1 505d 505d 0/2 auto-obsoleted due to no activity on 2025/06/05 22:19
android-6-1 KASAN: use-after-free Write in steam_input_close (3) 22 2 106d 106d 0/2 auto-obsoleted due to no activity on 2026/07/09 12:53
upstream KASAN: slab-use-after-free Read in steam_input_close input usb 19 2 502d 518d 0/29 auto-obsoleted due to no activity on 2025/06/08 06:57
linux-6.1 KASAN: use-after-free Read in steam_input_close 19 1 709d 709d 0/3 auto-obsoleted due to no activity on 2024/11/23 18:34

Sample crash report:
==================================================================
BUG: KASAN: use-after-free in instrument_atomic_read_write include/linux/instrumented.h:102 [inline]
BUG: KASAN: use-after-free in atomic_long_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:1779 [inline]
BUG: KASAN: use-after-free in __mutex_trylock_fast kernel/locking/mutex.c:176 [inline]
BUG: KASAN: use-after-free in mutex_lock+0x80/0x1a0 kernel/locking/mutex.c:295
Write of size 8 at addr ffff8881082c9450 by task udevd/1155

CPU: 1 PID: 1155 Comm: udevd Tainted: G        W          syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Call Trace:
 <TASK>
 __dump_stack+0x21/0x24 lib/dump_stack.c:88
 dump_stack_lvl+0xee/0x150 lib/dump_stack.c:106
 print_address_description+0x71/0x1e0 mm/kasan/report.c:316
 print_report+0x4a/0x60 mm/kasan/report.c:418
 kasan_report+0x122/0x150 mm/kasan/report.c:522
 check_region_inline mm/kasan/generic.c:-1 [inline]
 kasan_check_range+0x280/0x290 mm/kasan/generic.c:189
 __kasan_check_write+0x14/0x20 mm/kasan/shadow.c:37
 instrument_atomic_read_write include/linux/instrumented.h:102 [inline]
 atomic_long_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:1779 [inline]
 __mutex_trylock_fast kernel/locking/mutex.c:176 [inline]
 mutex_lock+0x80/0x1a0 kernel/locking/mutex.c:295
 steam_input_close+0x90/0x170 drivers/hid/hid-steam.c:308
 input_close_device+0x2b0/0x360 drivers/input/input.c:708
 evdev_close_device drivers/input/evdev.c:414 [inline]
 evdev_release+0x797/0x820 drivers/input/evdev.c:456
 __fput+0x1fc/0x8f0 fs/file_table.c:320
 ____fput+0x15/0x20 fs/file_table.c:348
 task_work_run+0x1db/0x240 kernel/task_work.c:203
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0x9b/0xb0 kernel/entry/common.c:177
 exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:303
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:87
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7ff49dca7407
Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff
RSP: 002b:00007fffdfd94fe0 EFLAGS: 00000202 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 00007ff49e361880 RCX: 00007ff49dca7407
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000008
RBP: 00007ff49e3616e8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000002
R13: 00007fffdfd9515c R14: 00007fffdfd95150 R15: 0000562c58c98f50
 </TASK>

Allocated by task 1461:
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:52
 kasan_save_alloc_info+0x25/0x30 mm/kasan/generic.c:505
 ____kasan_kmalloc mm/kasan/common.c:379 [inline]
 __kasan_kmalloc+0x95/0xb0 mm/kasan/common.c:388
 kasan_kmalloc include/linux/kasan.h:212 [inline]
 __do_kmalloc_node mm/slab_common.c:938 [inline]
 __kmalloc_node_track_caller+0xb1/0x1e0 mm/slab_common.c:958
 alloc_dr drivers/base/devres.c:116 [inline]
 devm_kmalloc+0x55/0x160 drivers/base/devres.c:833
 devm_kzalloc include/linux/device.h:211 [inline]
 steam_probe+0x11b/0xb50 drivers/hid/hid-steam.c:741
 hid_device_probe+0x268/0x390 drivers/hid/hid-core.c:2635
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x2cb/0x960 drivers/base/dd.c:639
 __driver_probe_device+0x198/0x280 drivers/base/dd.c:808
 driver_probe_device+0x54/0x3e0 drivers/base/dd.c:838
 __device_attach_driver+0x2e9/0x4a0 drivers/base/dd.c:966
 bus_for_each_drv+0x183/0x210 drivers/base/bus.c:429
 __device_attach+0x2a2/0x400 drivers/base/dd.c:1038
 device_initial_probe+0x1a/0x20 drivers/base/dd.c:1087
 bus_probe_device+0xc0/0x1f0 drivers/base/bus.c:489
 device_add+0xb4d/0xef0 drivers/base/core.c:3698
 hid_add_device+0x38f/0x540 drivers/hid/hid-core.c:2787
 usbhid_probe+0xbb6/0xfa0 drivers/hid/usbhid/hid-core.c:1427
 usb_probe_interface+0x610/0xaf0 drivers/usb/core/driver.c:397
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x2cb/0x960 drivers/base/dd.c:639
 __driver_probe_device+0x198/0x280 drivers/base/dd.c:808
 driver_probe_device+0x54/0x3e0 drivers/base/dd.c:838
 __device_attach_driver+0x2e9/0x4a0 drivers/base/dd.c:966
 bus_for_each_drv+0x183/0x210 drivers/base/bus.c:429
 __device_attach+0x2a2/0x400 drivers/base/dd.c:1038
 device_initial_probe+0x1a/0x20 drivers/base/dd.c:1087
 bus_probe_device+0xc0/0x1f0 drivers/base/bus.c:489
 device_add+0xb4d/0xef0 drivers/base/core.c:3698
 usb_set_configuration+0x19c2/0x1f10 drivers/usb/core/message.c:2165
 usb_generic_driver_probe+0x91/0x150 drivers/usb/core/generic.c:238
 usb_probe_device+0x159/0x270 drivers/usb/core/driver.c:294
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x2cb/0x960 drivers/base/dd.c:639
 __driver_probe_device+0x198/0x280 drivers/base/dd.c:808
 driver_probe_device+0x54/0x3e0 drivers/base/dd.c:838
 __device_attach_driver+0x2e9/0x4a0 drivers/base/dd.c:966
 bus_for_each_drv+0x183/0x210 drivers/base/bus.c:429
 __device_attach+0x2a2/0x400 drivers/base/dd.c:1038
 device_initial_probe+0x1a/0x20 drivers/base/dd.c:1087
 bus_probe_device+0xc0/0x1f0 drivers/base/bus.c:489
 device_add+0xb4d/0xef0 drivers/base/core.c:3698
 usb_new_device+0xa70/0x1520 drivers/usb/core/hub.c:2684
 hub_port_connect drivers/usb/core/hub.c:5594 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5734 [inline]
 port_event drivers/usb/core/hub.c:5898 [inline]
 hub_event+0x2850/0x4350 drivers/usb/core/hub.c:5980
 process_one_work+0x71f/0xc40 kernel/workqueue.c:2302
 worker_thread+0xa29/0x11f0 kernel/workqueue.c:2449
 kthread+0x281/0x320 kernel/kthread.c:386
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295

Freed by task 1461:
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:52
 kasan_save_free_info+0x31/0x50 mm/kasan/generic.c:516
 ____kasan_slab_free+0x132/0x180 mm/kasan/common.c:241
 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:249
 kasan_slab_free include/linux/kasan.h:178 [inline]
 slab_free_hook mm/slub.c:1745 [inline]
 slab_free_freelist_hook+0xc2/0x190 mm/slub.c:1771
 slab_free mm/slub.c:3686 [inline]
 __kmem_cache_free+0xb7/0x1b0 mm/slub.c:3702
 kfree+0x6f/0xf0 mm/slab_common.c:990
 release_nodes+0xf9/0x230 drivers/base/devres.c:503
 devres_release_all+0x149/0x1b0 drivers/base/devres.c:532
 device_unbind_cleanup drivers/base/dd.c:530 [inline]
 __device_release_driver drivers/base/dd.c:1288 [inline]
 device_release_driver_internal+0x581/0x820 drivers/base/dd.c:1309
 device_release_driver+0x19/0x20 drivers/base/dd.c:1332
 bus_remove_device+0x2ee/0x350 drivers/base/bus.c:531
 device_del+0x6a4/0xeb0 drivers/base/core.c:3886
 hid_remove_device drivers/hid/hid-core.c:2835 [inline]
 hid_destroy_device+0x6a/0x110 drivers/hid/hid-core.c:2854
 usbhid_disconnect+0x9f/0xc0 drivers/hid/usbhid/hid-core.c:1454
 usb_unbind_interface+0x223/0x8d0 drivers/usb/core/driver.c:459
 device_remove drivers/base/dd.c:550 [inline]
 __device_release_driver drivers/base/dd.c:1283 [inline]
 device_release_driver_internal+0x508/0x820 drivers/base/dd.c:1309
 device_release_driver+0x19/0x20 drivers/base/dd.c:1332
 bus_remove_device+0x2ee/0x350 drivers/base/bus.c:531
 device_del+0x6a4/0xeb0 drivers/base/core.c:3886
 usb_disable_device+0x3a8/0x750 drivers/usb/core/message.c:1414
 usb_disconnect+0x31e/0x860 drivers/usb/core/hub.c:2339
 hub_port_connect drivers/usb/core/hub.c:5433 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5734 [inline]
 port_event drivers/usb/core/hub.c:5898 [inline]
 hub_event+0x1a78/0x4350 drivers/usb/core/hub.c:5980
 process_one_work+0x71f/0xc40 kernel/workqueue.c:2302
 worker_thread+0xa29/0x11f0 kernel/workqueue.c:2449
 kthread+0x281/0x320 kernel/kthread.c:386
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295

The buggy address belongs to the object at ffff8881082c9400
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 80 bytes inside of
 512-byte region [ffff8881082c9400, ffff8881082c9600)

The buggy address belongs to the physical page:
page:ffffea000420b200 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1082c8
head:ffffea000420b200 order:2 compound_mapcount:0 compound_pincount:0
flags: 0x4000000000010200(slab|head|zone=1)
raw: 4000000000010200 dead000000000100 dead000000000122 ffff888100042f00
raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1, tgid 1 (swapper/0), ts 1981583985, free_ts 1980035000
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook+0x1f5/0x210 mm/page_alloc.c:2643
 prep_new_page+0x1c/0x110 mm/page_alloc.c:2650
 get_page_from_freelist+0x2c7b/0x2cf0 mm/page_alloc.c:4554
 __alloc_pages+0x1c3/0x450 mm/page_alloc.c:5868
 alloc_slab_page+0x6e/0xf0 include/linux/gfp.h:-1
 allocate_slab mm/slub.c:1962 [inline]
 new_slab+0x98/0x3d0 mm/slub.c:2015
 ___slab_alloc+0x6f6/0xb50 mm/slub.c:3203
 __slab_alloc+0x5e/0xa0 mm/slub.c:3302
 slab_alloc_node mm/slub.c:3387 [inline]
 __kmem_cache_alloc_node+0x203/0x2c0 mm/slub.c:3462
 kmalloc_node_trace+0x26/0xb0 mm/slab_common.c:1041
 kmalloc_node include/linux/slab.h:585 [inline]
 kzalloc_node include/linux/slab.h:710 [inline]
 alloc_desc+0x65/0x810 kernel/irq/irqdesc.c:396
 alloc_descs kernel/irq/irqdesc.c:500 [inline]
 __irq_alloc_descs+0x2c9/0x4e0 kernel/irq/irqdesc.c:823
 irq_domain_alloc_descs kernel/irq/irqdomain.c:-1 [inline]
 irq_domain_alloc_irqs_locked+0x81/0xae0 kernel/irq/irqdomain.c:1495
 __irq_domain_alloc_irqs+0x6b/0xb0 kernel/irq/irqdomain.c:1567
 __msi_domain_alloc_irqs+0x55f/0x1250 kernel/irq/msi.c:883
 msi_domain_alloc_irqs_descs_locked+0x113/0x170 kernel/irq/msi.c:942
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:26 [inline]
 free_pages_prepare mm/page_alloc.c:1551 [inline]
 free_pcp_prepare mm/page_alloc.c:1625 [inline]
 free_unref_page_prepare+0x742/0x750 mm/page_alloc.c:3589
 free_unref_page+0x8f/0x530 mm/page_alloc.c:3687
 free_the_page mm/page_alloc.c:836 [inline]
 __free_pages+0x67/0x100 mm/page_alloc.c:5957
 free_pages+0x82/0x90 mm/page_alloc.c:5968
 __stack_depot_save+0x457/0x480 lib/stackdepot.c:506
 kasan_save_stack mm/kasan/common.c:46 [inline]
 kasan_set_track+0x60/0x70 mm/kasan/common.c:52
 kasan_save_alloc_info+0x25/0x30 mm/kasan/generic.c:505
 ____kasan_kmalloc mm/kasan/common.c:379 [inline]
 __kasan_kmalloc+0x95/0xb0 mm/kasan/common.c:388
 kasan_kmalloc include/linux/kasan.h:212 [inline]
 __do_kmalloc_node mm/slab_common.c:938 [inline]
 __kmalloc_node_track_caller+0xb1/0x1e0 mm/slab_common.c:958
 alloc_dr drivers/base/devres.c:116 [inline]
 __devres_alloc_node+0x4d/0x110 drivers/base/devres.c:164
 devm_device_add_group+0x38/0xc0 drivers/base/core.c:2807
 msi_sysfs_create_group kernel/irq/msi.c:360 [inline]
 msi_setup_device_data+0x8e/0x120 kernel/irq/msi.c:209
 pci_setup_msi_context drivers/pci/msi/msi.c:357 [inline]
 __pci_enable_msix_range+0x157/0x15b0 drivers/pci/msi/msi.c:947
 pci_alloc_irq_vectors_affinity+0x10c/0x2b0 drivers/pci/msi/msi.c:1027
 vp_request_msix_vectors drivers/virtio/virtio_pci_common.c:133 [inline]
 vp_find_vqs_msix+0x438/0xfb0 drivers/virtio/virtio_pci_common.c:309
 vp_find_vqs+0x5d/0x4f0 drivers/virtio/virtio_pci_common.c:407

Memory state around the buggy address:
 ffff8881082c9300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8881082c9380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff8881082c9400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                 ^
 ffff8881082c9480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8881082c9500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
hid 0003:28DE:1102.001F: No HID_FEATURE_REPORT submitted -  nothing to read
hid 0003:28DE:1102.001F: No HID_FEATURE_REPORT submitted -  nothing to read
hid 0003:28DE:1102.001F: No HID_FEATURE_REPORT submitted -  nothing to read

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/09/15 09:56 android14-6.1 876f660de856 e2beed91 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 KASAN: use-after-free Write in steam_input_close
* Struck through repros no longer work on HEAD.