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KASAN: use-after-free Write in steam_input_open

Status: upstream: reported C repro on 2024/09/08 02:35
Bug presence: origin:lts
[Documentation on labels]
Reported-by: syzbot+73d7bd81116b4ca4f785@syzkaller.appspotmail.com
First crash: 20d, last: 1d21h
▶ ▼ Bug presence (2)
Date Name Commit Repro Result
2024/09/08 lts (merge base) b925f60c6ee7 C [report] KASAN: use-after-free Write in steam_input_close
2024/09/08 upstream (ToT) d1f2d51b711a C Didn't crash
▶ ▼ Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-6-1 KASAN: use-after-free Write in steam_input_open origin:lts C 8 1d18h 3d09h 0/2 upstream: reported C repro on 2024/09/25 04:26
android-5-10 KASAN: use-after-free Write in steam_input_open C 6 4d16h 25d 0/2 upstream: reported C repro on 2024/09/03 09:12

Sample crash report:
==================================================================
BUG: KASAN: use-after-free in instrument_atomic_read_write include/linux/instrumented.h:101 [inline]
BUG: KASAN: use-after-free in atomic_long_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:1667 [inline]
BUG: KASAN: use-after-free in __mutex_trylock_fast kernel/locking/mutex.c:169 [inline]
BUG: KASAN: use-after-free in mutex_lock+0xa9/0x1e0 kernel/locking/mutex.c:288
Write of size 8 at addr ffff88810ed82050 by task udevd/308

CPU: 0 PID: 308 Comm: udevd Not tainted 5.15.157-syzkaller-00897-g53be7c8abe11 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x151/0x1c0 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
 kasan_check_range+0x293/0x2a0 mm/kasan/generic.c:189
 __kasan_check_write+0x14/0x20 mm/kasan/shadow.c:37
 instrument_atomic_read_write include/linux/instrumented.h:101 [inline]
 atomic_long_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:1667 [inline]
 __mutex_trylock_fast kernel/locking/mutex.c:169 [inline]
 mutex_lock+0xa9/0x1e0 kernel/locking/mutex.c:288
 steam_input_open+0x91/0x1a0 drivers/hid/hid-steam.c:297
 input_open_device+0x1a5/0x310 drivers/input/input.c:640
 evdev_open_device drivers/input/evdev.c:404 [inline]
 evdev_open+0x3df/0x620 drivers/input/evdev.c:491
 chrdev_open+0x4f7/0x620 fs/char_dev.c:414
 do_dentry_open+0x81c/0xfd0 fs/open.c:828
 vfs_open+0x73/0x80 fs/open.c:958
 do_open fs/namei.c:3608 [inline]
 path_openat+0x26f0/0x2f40 fs/namei.c:3742
 do_filp_open+0x21c/0x460 fs/namei.c:3769
 do_sys_openat2+0x13f/0x830 fs/open.c:1234
 do_sys_open fs/open.c:1250 [inline]
 __do_sys_openat fs/open.c:1266 [inline]
 __se_sys_openat fs/open.c:1261 [inline]
 __x64_sys_openat+0x243/0x290 fs/open.c:1261
 x64_sys_call+0x6bf/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:258
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f2d6cdb39a4
Code: 24 20 48 8d 44 24 30 48 89 44 24 28 64 8b 04 25 18 00 00 00 85 c0 75 2c 44 89 e2 48 89 ee bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 76 60 48 8b 15 55 a4 0d 00 f7 d8 64 89 02 48 83
RSP: 002b:00007ffcbc2881d0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f2d6cdb39a4
RDX: 0000000000080000 RSI: 000055e7409e2150 RDI: 00000000ffffff9c
RBP: 000055e7409e2150 R08: 000055e7409c8f28 R09: fffffffffffffe98
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000080000
R13: 00007ffcbc288398 R14: 0000000000000000 R15: 000055e73ef0eed5
 </TASK>

Allocated by task 20:
 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_track_caller+0x139/0x260 mm/slub.c:4950
 alloc_dr drivers/base/devres.c:116 [inline]
 devm_kmalloc+0x4f/0x160 drivers/base/devres.c:823
 devm_kzalloc include/linux/device.h:209 [inline]
 steam_probe+0x11d/0xa80 drivers/hid/hid-steam.c:741
 hid_device_probe+0x261/0x390 drivers/hid/hid-core.c:2302
 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:3419
 hid_add_device+0x39c/0x4e0 drivers/hid/hid-core.c:2452
 usbhid_probe+0xb0e/0xea0 drivers/hid/usbhid/hid-core.c:1424
 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:3419
 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:3419
 usb_new_device+0x1038/0x1c00 drivers/usb/core/hub.c:2599
 hub_port_connect drivers/usb/core/hub.c:5512 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5652 [inline]
 port_event drivers/usb/core/hub.c:5802 [inline]
 hub_event+0x2def/0x4770 drivers/usb/core/hub.c:5884
 process_one_work+0x6bb/0xc10 kernel/workqueue.c:2325
 worker_thread+0xad5/0x12a0 kernel/workqueue.c:2472
 kthread+0x421/0x510 kernel/kthread.c:337
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:300

Freed by task 20:
 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
 release_nodes+0xf1/0x230 drivers/base/devres.c:501
 devres_release_all+0x148/0x1a0 drivers/base/devres.c:530
 __device_release_driver drivers/base/dd.c:1231 [inline]
 device_release_driver_internal+0x51a/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:3607
 hid_remove_device drivers/hid/hid-core.c:2500 [inline]
 hid_destroy_device+0x68/0x110 drivers/hid/hid-core.c:2519
 usbhid_disconnect+0x9e/0xc0 drivers/hid/usbhid/hid-core.c:1451
 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:3607
 usb_disable_device+0x380/0x720 drivers/usb/core/message.c:1414
 usb_disconnect+0x32a/0x890 drivers/usb/core/hub.c:2249
 hub_port_connect drivers/usb/core/hub.c:5351 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5652 [inline]
 port_event drivers/usb/core/hub.c:5802 [inline]
 hub_event+0x1d42/0x4770 drivers/usb/core/hub.c:5884
 process_one_work+0x6bb/0xc10 kernel/workqueue.c:2325
 process_scheduled_works kernel/workqueue.c:2388 [inline]
 worker_thread+0xe02/0x12a0 kernel/workqueue.c:2474
 kthread+0x421/0x510 kernel/kthread.c:337
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:300

The buggy address belongs to the object at ffff88810ed82000
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 80 bytes inside of
 512-byte region [ffff88810ed82000, ffff88810ed82200)
The buggy address belongs to the page:
page:ffffea00043b6000 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10ed80
head:ffffea00043b6000 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 102, ts 3563507000, free_ts 0
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook+0x1a3/0x1b0 mm/page_alloc.c:2605
 prep_new_page+0x1b/0x110 mm/page_alloc.c:2611
 get_page_from_freelist+0x3550/0x35d0 mm/page_alloc.c:4485
 __alloc_pages+0x27e/0x8f0 mm/page_alloc.c:5779
 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]
 __kmalloc_track_caller+0x16c/0x260 mm/slub.c:4945
 kmalloc_reserve net/core/skbuff.c:357 [inline]
 __alloc_skb+0x10c/0x550 net/core/skbuff.c:428
 alloc_skb include/linux/skbuff.h:1183 [inline]
 alloc_skb_with_frags+0xa6/0x680 net/core/skbuff.c:6159
 sock_alloc_send_pskb+0x915/0xa50 net/core/sock.c:2536
 unix_dgram_sendmsg+0x6fd/0x2090 net/unix/af_unix.c:1810
 sock_sendmsg_nosec net/socket.c:704 [inline]
 __sock_sendmsg net/socket.c:716 [inline]
 sock_write_iter+0x39b/0x530 net/socket.c:1079
 call_write_iter include/linux/fs.h:2204 [inline]
 new_sync_write fs/read_write.c:507 [inline]
 vfs_write+0xd5d/0x1110 fs/read_write.c:594
 ksys_write+0x199/0x2c0 fs/read_write.c:647
 __do_sys_write fs/read_write.c:659 [inline]
 __se_sys_write fs/read_write.c:656 [inline]
 __x64_sys_write+0x7b/0x90 fs/read_write.c:656
page_owner free stack trace missing

Memory state around the buggy address:
 ffff88810ed81f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88810ed81f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88810ed82000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                 ^
 ffff88810ed82080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88810ed82100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
hid 0003:28DE:1102.051B: No HID_FEATURE_REPORT submitted -  nothing to read
hid 0003:28DE:1102.051B: No HID_FEATURE_REPORT submitted -  nothing to read
hid 0003:28DE:1102.051B: No HID_FEATURE_REPORT submitted -  nothing to read
hid 0003:28DE:1102.051B: No HID_FEATURE_REPORT submitted -  nothing to read
hid 0003:28DE:1102.051B: No HID_FEATURE_REPORT submitted -  nothing to read

Crashes (21):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/09/09 01:00 android13-5.15-lts 53be7c8abe11 9750182a .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 KASAN: use-after-free Write in steam_input_open
2024/09/08 14:53 android13-5.15-lts 53be7c8abe11 9750182a .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 KASAN: use-after-free Write in steam_input_open
2024/09/08 02:25 android13-5.15-lts 53be7c8abe11 9750182a .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-15 KASAN: use-after-free Write in steam_input_open
2024/09/08 11:08 android13-5.15-lts 53be7c8abe11 9750182a .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-15 KASAN: use-after-free Write in steam_input_open
2024/09/26 16:55 android13-5.15-lts b92c0d35d015 9314348a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 KASAN: use-after-free Write in steam_input_open
2024/09/25 21:29 android13-5.15-lts b92c0d35d015 0d19f247 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 KASAN: use-after-free Write in steam_input_open
2024/09/19 19:26 android13-5.15-lts b92c0d35d015 6f888b75 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 KASAN: use-after-free Write in steam_input_open
2024/09/19 19:25 android13-5.15-lts b92c0d35d015 6f888b75 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 KASAN: use-after-free Write in steam_input_open
2024/09/16 15:31 android13-5.15-lts b92c0d35d015 c673ca06 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 KASAN: use-after-free Write in steam_input_open
2024/09/13 15:34 android13-5.15-lts e6fb3b0fa87f b58f933c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 KASAN: use-after-free Write in steam_input_open
2024/09/13 02:29 android13-5.15-lts e6fb3b0fa87f 73e8a465 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 KASAN: use-after-free Write in steam_input_open
2024/09/10 19:21 android13-5.15-lts 99ada58989e6 86aa7bd7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 KASAN: use-after-free Write in steam_input_open
2024/09/10 09:37 android13-5.15-lts 99ada58989e6 784df80e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 KASAN: use-after-free Write in steam_input_open
2024/09/10 06:10 android13-5.15-lts c53388f01037 784df80e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 KASAN: use-after-free Write in steam_input_open
2024/09/07 22:07 android13-5.15-lts 53be7c8abe11 9750182a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 KASAN: use-after-free Write in steam_input_open
2024/09/07 22:05 android13-5.15-lts 53be7c8abe11 9750182a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 KASAN: use-after-free Write in steam_input_open
2024/09/07 20:02 android13-5.15-lts 53be7c8abe11 9750182a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 KASAN: use-after-free Write in steam_input_open
2024/09/22 19:12 android13-5.15-lts b92c0d35d015 6f888b75 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 KASAN: slab-out-of-bounds Read in steam_input_open
2024/09/11 08:04 android13-5.15-lts 99ada58989e6 8ab55d0e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 UBSAN: array-index-out-of-bounds in steam_input_open
2024/09/09 16:49 android13-5.15-lts c53388f01037 073f8be2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 general protection fault in steam_input_open
2024/09/09 16:49 android13-5.15-lts c53388f01037 073f8be2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 general protection fault in steam_input_open
* Struck through repros no longer work on HEAD.