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KASAN: use-after-free Write in steam_input_open

Status: upstream: reported C repro on 2024/09/03 09:12
Reported-by: syzbot+d6a6ba46361f19622c24@syzkaller.appspotmail.com
First crash: 276d, last: 4d06h
Fix bisection: the issue occurs on the latest tested release (bisect log)
  
▶ ▼ Similar bugs (6)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-54 KASAN: use-after-free Write in steam_input_open C 29 30d 102d 0/2 upstream: reported C repro on 2025/02/24 11:20
android-5-15 KASAN: use-after-free Write in steam_input_open origin:lts C 46 7d01h 271d 0/2 upstream: reported C repro on 2024/09/08 02:35
android-6-1 KASAN: use-after-free Write in steam_input_open origin:lts C 44 11d 254d 0/2 upstream: reported C repro on 2024/09/25 04:26
linux-6.1 KASAN: use-after-free Read in steam_input_open origin:lts-only C done 5 75d 92d 0/3 upstream: reported C repro on 2025/03/06 15:18
upstream KASAN: slab-use-after-free Read in steam_input_open usb input C done 5 90d 104d 27/28 upstream: reported C repro on 2025/02/22 17:01
linux-5.15 KASAN: use-after-free Read in steam_input_open origin:lts-only C error 12 4d03h 92d 0/3 upstream: reported C repro on 2025/03/06 06:53
▶ ▼ Last patch testing requests (10)
Created Duration User Patch Repo Result
2025/06/02 10:53 7m retest repro android13-5.10-lts report log
2025/06/02 10:53 9m retest repro android13-5.10-lts report log
2025/06/02 10:53 6m retest repro android13-5.10-lts report log
2025/06/02 10:53 24m retest repro android13-5.10-lts OK log
2025/06/02 10:53 1h29m retest repro android13-5.10-lts report log
2025/04/03 07:00 10m retest repro android13-5.10-lts report log
2025/03/27 00:14 9m retest repro android13-5.10-lts report log
2025/01/23 01:32 15m retest repro android13-5.10-lts report log
2025/01/03 21:58 8m retest repro android13-5.10-lts report log
2024/10/09 22:55 15m retest repro android13-5.10-lts report log

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 atomic64_try_cmpxchg_acquire include/asm-generic/atomic-instrumented.h:1515 [inline]
BUG: KASAN: use-after-free in atomic_long_try_cmpxchg_acquire include/asm-generic/atomic-long.h:443 [inline]
BUG: KASAN: use-after-free in __mutex_trylock_fast kernel/locking/mutex.c:173 [inline]
BUG: KASAN: use-after-free in mutex_lock+0x7f/0xe0 kernel/locking/mutex.c:298
Write of size 8 at addr ffff888110687040 by task udevd/295

CPU: 0 PID: 295 Comm: udevd Not tainted 5.10.237-syzkaller-00309-g7e2543346ff7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
 __dump_stack+0x21/0x24 lib/dump_stack.c:77
 dump_stack_lvl+0x169/0x1d8 lib/dump_stack.c:118
 print_address_description+0x7f/0x2c0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:435 [inline]
 kasan_report+0xe2/0x130 mm/kasan/report.c:452
 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:101 [inline]
 atomic64_try_cmpxchg_acquire include/asm-generic/atomic-instrumented.h:1515 [inline]
 atomic_long_try_cmpxchg_acquire include/asm-generic/atomic-long.h:443 [inline]
 __mutex_trylock_fast kernel/locking/mutex.c:173 [inline]
 mutex_lock+0x7f/0xe0 kernel/locking/mutex.c:298
 steam_input_open+0x91/0x160 drivers/hid/hid-steam.c:297
 input_open_device+0x14c/0x2a0 drivers/input/input.c:635
 evdev_open_device drivers/input/evdev.c:400 [inline]
 evdev_open+0x4d2/0x5e0 drivers/input/evdev.c:487
 chrdev_open+0x597/0x670 fs/char_dev.c:414
 do_dentry_open+0x793/0x1090 fs/open.c:819
 vfs_open+0x73/0x80 fs/open.c:942
 do_open fs/namei.c:3391 [inline]
 path_openat+0x27ad/0x3160 fs/namei.c:3509
 do_filp_open+0x1b3/0x3e0 fs/namei.c:3536
 do_sys_openat2+0x14c/0x6d0 fs/open.c:1217
 do_sys_open fs/open.c:1233 [inline]
 __do_sys_openat fs/open.c:1249 [inline]
 __se_sys_openat fs/open.c:1244 [inline]
 __x64_sys_openat+0x136/0x160 fs/open.c:1244
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f6d95d119a4
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:00007ffdc471e300 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f6d95d119a4
RDX: 0000000000080000 RSI: 000055e01e9b60b0 RDI: 00000000ffffff9c
RBP: 000055e01e9b60b0 R08: 000055e01e9b3b28 R09: 00007f6d95decb30
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000080000
R13: 00007ffdc471e4c8 R14: 0000000000000000 R15: 000055e015288ed5

Allocated by task 0:
(stack is not available)

Freed by task 15:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track+0x4a/0x70 mm/kasan/common.c:45
 kasan_set_free_info+0x23/0x40 mm/kasan/generic.c:370
 ____kasan_slab_free+0x125/0x160 mm/kasan/common.c:362
 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:370
 kasan_slab_free include/linux/kasan.h:220 [inline]
 slab_free_hook mm/slub.c:1595 [inline]
 slab_free_freelist_hook+0xc5/0x190 mm/slub.c:1621
 slab_free mm/slub.c:3203 [inline]
 kfree+0xc0/0x270 mm/slub.c:4191
 release_nodes+0x753/0x7d0 drivers/base/devres.c:524
 devres_release_all+0x7c/0xa0 drivers/base/devres.c:545
 __device_release_driver drivers/base/dd.c:1190 [inline]
 device_release_driver_internal+0x4cb/0x750 drivers/base/dd.c:1221
 device_release_driver+0x19/0x20 drivers/base/dd.c:1244
 bus_remove_device+0x2dd/0x340 drivers/base/bus.c:535
 device_del+0x696/0xed0 drivers/base/core.c:3452
 hid_remove_device drivers/hid/hid-core.c:2503 [inline]
 hid_destroy_device+0x6a/0x110 drivers/hid/hid-core.c:2522
 usbhid_disconnect+0x9f/0xc0 drivers/hid/usbhid/hid-core.c:1445
 usb_unbind_interface+0x212/0x8c0 drivers/usb/core/driver.c:459
 __device_release_driver drivers/base/dd.c:-1 [inline]
 device_release_driver_internal+0x4bc/0x750 drivers/base/dd.c:1221
 device_release_driver+0x19/0x20 drivers/base/dd.c:1244
 bus_remove_device+0x2dd/0x340 drivers/base/bus.c:535
 device_del+0x696/0xed0 drivers/base/core.c:3452
 usb_disable_device+0x3a8/0x750 drivers/usb/core/message.c:1411
 usb_disconnect+0x31e/0x850 drivers/usb/core/hub.c:2282
 hub_port_connect drivers/usb/core/hub.c:5308 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5609 [inline]
 port_event drivers/usb/core/hub.c:5759 [inline]
 hub_event+0x1912/0x4120 drivers/usb/core/hub.c:5841
 process_one_work+0x6e1/0xba0 kernel/workqueue.c:2301
 worker_thread+0xa6a/0x13b0 kernel/workqueue.c:2447
 kthread+0x346/0x3d0 kernel/kthread.c:313
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298

The buggy address belongs to the object at ffff888110687000
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 64 bytes inside of
 512-byte region [ffff888110687000, ffff888110687200)
The buggy address belongs to the page:
page:ffffea000441a100 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x110684
head:ffffea000441a100 order:2 compound_mapcount:0 compound_pincount:0
flags: 0x4000000000010200(slab|head)
raw: 4000000000010200 ffffea0004403e00 0000000300000003 ffff888100043080
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 108, ts 4765880222, free_ts 0
 set_page_owner include/linux/page_owner.h:35 [inline]
 post_alloc_hook mm/page_alloc.c:2456 [inline]
 prep_new_page+0x179/0x180 mm/page_alloc.c:2462
 get_page_from_freelist+0x2235/0x23d0 mm/page_alloc.c:4254
 __alloc_pages_nodemask+0x268/0x5f0 mm/page_alloc.c:5349
 alloc_slab_page mm/slub.c:-1 [inline]
 allocate_slab mm/slub.c:1808 [inline]
 new_slab+0x84/0x3f0 mm/slub.c:1869
 new_slab_objects mm/slub.c:2627 [inline]
 ___slab_alloc+0x2a6/0x450 mm/slub.c:2791
 __slab_alloc+0x63/0xa0 mm/slub.c:2831
 slab_alloc_node mm/slub.c:2913 [inline]
 slab_alloc mm/slub.c:2955 [inline]
 __kmalloc_track_caller+0x1ef/0x320 mm/slub.c:4536
 __kmalloc_reserve net/core/skbuff.c:144 [inline]
 __alloc_skb+0xdc/0x520 net/core/skbuff.c:212
 alloc_skb include/linux/skbuff.h:1126 [inline]
 alloc_skb_with_frags+0xa2/0x560 net/core/skbuff.c:5993
 sock_alloc_send_pskb+0x853/0x980 net/core/sock.c:2388
 unix_dgram_sendmsg+0x5f4/0x17d0 net/unix/af_unix.c:1725
 sock_sendmsg_nosec net/socket.c:652 [inline]
 __sock_sendmsg net/socket.c:664 [inline]
 sock_write_iter+0x29c/0x380 net/socket.c:1018
 call_write_iter include/linux/fs.h:2058 [inline]
 new_sync_write fs/read_write.c:518 [inline]
 vfs_write+0x725/0xd60 fs/read_write.c:605
 ksys_write+0x140/0x240 fs/read_write.c:658
 __do_sys_write fs/read_write.c:670 [inline]
 __se_sys_write fs/read_write.c:667 [inline]
 __x64_sys_write+0x7b/0x90 fs/read_write.c:667
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
page_owner free stack trace missing

Memory state around the buggy address:
 ffff888110686f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff888110686f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff888110687000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                           ^
 ffff888110687080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888110687100: 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
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
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
hid 0003:28DE:1102.001F: No HID_FEATURE_REPORT submitted -  nothing to read
hid 0003:28DE:1102.0059: No HID_FEATURE_REPORT submitted -  nothing to read
hid 0003:28DE:1102.0059: No HID_FEATURE_REPORT submitted -  nothing to read
hid 0003:28DE:1102.0059: No HID_FEATURE_REPORT submitted -  nothing to read
hid 0003:28DE:1102.0059: No HID_FEATURE_REPORT submitted -  nothing to read
hid 0003:28DE:1102.0059: No HID_FEATURE_REPORT submitted -  nothing to read

Crashes (29):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/05/16 07:32 android13-5.10-lts 7e2543346ff7 cfde8269 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 KASAN: use-after-free Write in steam_input_open
2025/05/16 07:10 android13-5.10-lts 7e2543346ff7 cfde8269 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 KASAN: use-after-free Write in steam_input_open
2025/05/16 06:21 android13-5.10-lts 7e2543346ff7 cfde8269 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 KASAN: use-after-free Write in steam_input_open
2025/05/14 00:46 android13-5.10-lts 7e2543346ff7 7344edeb .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 KASAN: use-after-free Write in steam_input_open
2025/05/13 22:49 android13-5.10-lts 7e2543346ff7 7344edeb .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 KASAN: use-after-free Write in steam_input_open
2025/05/13 22:28 android13-5.10-lts 7e2543346ff7 7344edeb .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 KASAN: use-after-free Write in steam_input_open
2025/05/13 02:24 android13-5.10-lts 7e2543346ff7 f6671af7 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 KASAN: use-after-free Write in steam_input_open
2025/05/12 13:22 android13-5.10-lts 7e2543346ff7 77908e5f .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 KASAN: use-after-free Write in steam_input_open
2025/05/12 09:53 android13-5.10-lts 7e2543346ff7 77908e5f .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 KASAN: use-after-free Write in steam_input_open
2025/05/12 09:33 android13-5.10-lts 7e2543346ff7 77908e5f .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 KASAN: use-after-free Write in steam_input_open
2025/05/12 08:45 android13-5.10-lts 7e2543346ff7 77908e5f .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 KASAN: use-after-free Write in steam_input_open
2025/05/01 15:13 android13-5.10-lts ab07aeb2c93d 51b137cd .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 KASAN: use-after-free Write in steam_input_open
2025/04/26 11:46 android13-5.10-lts ba8b8b193394 c6b4fb39 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 KASAN: use-after-free Write in steam_input_open
2025/01/08 19:00 android13-5.10-lts 49e8ba0a684f f3558dbf .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 KASAN: use-after-free Write in steam_input_open
2024/09/03 09:05 android13-5.10-lts 1c5354a314ea 8045124c .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 KASAN: use-after-free Write in steam_input_open
2025/04/27 17:44 android13-5.10-lts ba8b8b193394 c6b4fb39 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci2-android-5-10 KASAN: use-after-free Write in steam_input_open
2025/05/19 09:16 android13-5.10-lts 7e2543346ff7 f41472b0 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 KASAN: use-after-free Write in steam_input_open
2025/04/26 20:27 android13-5.10-lts ba8b8b193394 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 KASAN: use-after-free Write in steam_input_open
2025/04/26 19:15 android13-5.10-lts ba8b8b193394 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 KASAN: use-after-free Write in steam_input_open
2025/04/26 11:23 android13-5.10-lts ba8b8b193394 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 KASAN: use-after-free Write in steam_input_open
2025/03/12 18:54 android13-5.10-lts 3f5f2283d684 ee70e6db .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 KASAN: use-after-free Write in steam_input_open
2025/03/08 23:19 android13-5.10-lts 3f5f2283d684 7e3bd60d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 KASAN: use-after-free Write in steam_input_open
2025/03/06 08:40 android13-5.10-lts 3f5f2283d684 831e3629 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 KASAN: use-after-free Write in steam_input_open
2025/03/06 00:16 android13-5.10-lts 3f5f2283d684 831e3629 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 KASAN: use-after-free Write in steam_input_open
2024/09/23 21:32 android13-5.10-lts 8d23314f588a 89298aad .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 KASAN: use-after-free Write in steam_input_open
2024/09/17 12:08 android13-5.10-lts 8d23314f588a c673ca06 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 KASAN: use-after-free Write in steam_input_open
2024/09/07 18:39 android13-5.10-lts 1c5354a314ea 9750182a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 KASAN: use-after-free Write in steam_input_open
2024/09/07 18:30 android13-5.10-lts 1c5354a314ea 9750182a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 KASAN: use-after-free Write in steam_input_open
2024/09/03 01:34 android13-5.10-lts 1c5354a314ea 8045124c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 KASAN: use-after-free Write in steam_input_open
* Struck through repros no longer work on HEAD.