From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f79.google.com (mail-io1-f79.google.com [209.85.166.79]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 35FAC2CCDB for ; Sat, 22 Feb 2025 17:01:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.79 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740243686; cv=none; b=FEjR8p66eY0aDjn0oAzuclaqnSTcR1gpG84gsr5fOpOF7g2Ss0xNgPKK75F05RFNZ5247y+5euVzLZ8YBOsT9YgAqx0YF2bCcQ9OxIvUIakOEJMx6RYUt8ArL2cZ9Fz+GHsOdSnUd+7xAerEL1fRaDkJ7LKMJ/pBM4XuoRmG67w= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740243686; c=relaxed/simple; bh=Hz5QQWeKVCb46G5uNSrS0i3d2lqWW6su2XwVgII93nM=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; 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List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:12cd:b0:3d0:4eaa:e480 with SMTP id e9e14a558f8ab-3d2cae4f39bmr79860755ab.3.1740243683303; Sat, 22 Feb 2025 09:01:23 -0800 (PST) Date: Sat, 22 Feb 2025 09:01:23 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <67ba02e3.050a0220.14d86d.065b.GAE@google.com> Subject: [syzbot] [input?] [usb?] KASAN: slab-use-after-free Read in steam_input_open From: syzbot To: bentiss@kernel.org, jikos@kernel.org, jkosina@suse.com, linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, syzkaller-bugs@googlegroups.com, vi@endrift.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 0a86e49acfbb dt-bindings: usb: samsung,exynos-dwc3 Add exy.. git tree: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing console output: https://syzkaller.appspot.com/x/log.txt?x=172e5ae4580000 kernel config: https://syzkaller.appspot.com/x/.config?x=f429368eda610a89 dashboard link: https://syzkaller.appspot.com/bug?extid=0154da2d403396b2bd59 compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=162ca7f8580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17c02ba4580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/f73104f0e203/disk-0a86e49a.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/fba41561bd74/vmlinux-0a86e49a.xz kernel image: https://storage.googleapis.com/syzbot-assets/a82f1679cfc5/bzImage-0a86e49a.xz The issue was bisected to: commit 79504249d7e27cad4a3eeb9afc6386e418728ce0 Author: Vicki Pfau Date: Wed Feb 5 03:55:27 2025 +0000 HID: hid-steam: Move hidraw input (un)registering to work bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=12f69fdf980000 final oops: https://syzkaller.appspot.com/x/report.txt?x=11f69fdf980000 console output: https://syzkaller.appspot.com/x/log.txt?x=16f69fdf980000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+0154da2d403396b2bd59@syzkaller.appspotmail.com Fixes: 79504249d7e2 ("HID: hid-steam: Move hidraw input (un)registering to work") ================================================================== BUG: KASAN: slab-use-after-free in steam_input_open+0x14d/0x160 drivers/hid/hid-steam.c:604 Read of size 8 at addr ffff88810df35930 by task udevd/2958 CPU: 0 UID: 0 PID: 2958 Comm: udevd Not tainted 6.14.0-rc3-syzkaller-00036-g0a86e49acfbb #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:378 [inline] print_report+0xc3/0x620 mm/kasan/report.c:489 kasan_report+0xd9/0x110 mm/kasan/report.c:602 steam_input_open+0x14d/0x160 drivers/hid/hid-steam.c:604 input_open_device+0x230/0x390 drivers/input/input.c:600 evdev_open_device drivers/input/evdev.c:391 [inline] evdev_open+0x52d/0x690 drivers/input/evdev.c:478 chrdev_open+0x237/0x6a0 fs/char_dev.c:414 do_dentry_open+0x6cb/0x1390 fs/open.c:956 vfs_open+0x82/0x3f0 fs/open.c:1086 do_open fs/namei.c:3830 [inline] path_openat+0x1e88/0x2d80 fs/namei.c:3989 do_filp_open+0x20c/0x470 fs/namei.c:4016 do_sys_openat2+0x17a/0x1e0 fs/open.c:1428 do_sys_open fs/open.c:1443 [inline] __do_sys_openat fs/open.c:1459 [inline] __se_sys_openat fs/open.c:1454 [inline] __x64_sys_openat+0x175/0x210 fs/open.c:1454 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f48428969a4 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:00007ffcc9566fe0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f48428969a4 RDX: 0000000000080000 RSI: 00005564b5753fd0 RDI: 00000000ffffff9c RBP: 00005564b5753fd0 R08: 00005564b5708ed8 R09: 00007f4842971b10 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000080000 R13: 00007ffcc95671a8 R14: 0000000000000000 R15: 00005564ab4c5ed5 Allocated by task 2986: kasan_save_stack+0x33/0x60 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:377 [inline] __kasan_kmalloc+0x8f/0xa0 mm/kasan/common.c:394 kasan_kmalloc include/linux/kasan.h:260 [inline] __do_kmalloc_node mm/slub.c:4294 [inline] __kmalloc_node_track_caller_noprof+0x20b/0x4c0 mm/slub.c:4313 alloc_dr drivers/base/devres.c:119 [inline] devm_kmalloc+0xa5/0x260 drivers/base/devres.c:843 devm_kzalloc include/linux/device.h:328 [inline] steam_probe+0x132/0x1060 drivers/hid/hid-steam.c:1241 __hid_device_probe drivers/hid/hid-core.c:2713 [inline] hid_device_probe+0x349/0x700 drivers/hid/hid-core.c:2750 call_driver_probe drivers/base/dd.c:579 [inline] really_probe+0x23e/0xa90 drivers/base/dd.c:658 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:800 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:830 __device_attach_driver+0x1df/0x310 drivers/base/dd.c:958 bus_for_each_drv+0x157/0x1e0 drivers/base/bus.c:462 __device_attach+0x1e8/0x4b0 drivers/base/dd.c:1030 bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:537 device_add+0x114b/0x1a70 drivers/base/core.c:3665 hid_add_device+0x374/0xa60 drivers/hid/hid-core.c:2896 usbhid_probe+0xd32/0x1400 drivers/hid/usbhid/hid-core.c:1431 usb_probe_interface+0x300/0x9c0 drivers/usb/core/driver.c:396 call_driver_probe drivers/base/dd.c:579 [inline] really_probe+0x23e/0xa90 drivers/base/dd.c:658 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:800 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:830 __device_attach_driver+0x1df/0x310 drivers/base/dd.c:958 bus_for_each_drv+0x157/0x1e0 drivers/base/bus.c:462 __device_attach+0x1e8/0x4b0 drivers/base/dd.c:1030 bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:537 device_add+0x114b/0x1a70 drivers/base/core.c:3665 usb_set_configuration+0x10cb/0x1c50 drivers/usb/core/message.c:2210 usb_generic_driver_probe+0xb1/0x110 drivers/usb/core/generic.c:250 usb_probe_device+0xec/0x3e0 drivers/usb/core/driver.c:291 call_driver_probe drivers/base/dd.c:579 [inline] really_probe+0x23e/0xa90 drivers/base/dd.c:658 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:800 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:830 __device_attach_driver+0x1df/0x310 drivers/base/dd.c:958 bus_for_each_drv+0x157/0x1e0 drivers/base/bus.c:462 __device_attach+0x1e8/0x4b0 drivers/base/dd.c:1030 bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:537 device_add+0x114b/0x1a70 drivers/base/core.c:3665 usb_new_device+0xd09/0x1a20 drivers/usb/core/hub.c:2663 hub_port_connect drivers/usb/core/hub.c:5533 [inline] hub_port_connect_change drivers/usb/core/hub.c:5673 [inline] port_event drivers/usb/core/hub.c:5833 [inline] hub_event+0x2e58/0x4f40 drivers/usb/core/hub.c:5915 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3236 process_scheduled_works kernel/workqueue.c:3317 [inline] worker_thread+0x6c8/0xf00 kernel/workqueue.c:3398 kthread+0x3af/0x750 kernel/kthread.c:464 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Freed by task 2986: kasan_save_stack+0x33/0x60 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:576 poison_slab_object mm/kasan/common.c:247 [inline] __kasan_slab_free+0x37/0x50 mm/kasan/common.c:264 kasan_slab_free include/linux/kasan.h:233 [inline] slab_free_hook mm/slub.c:2353 [inline] slab_free mm/slub.c:4609 [inline] kfree+0x294/0x480 mm/slub.c:4757 release_nodes+0x11e/0x240 drivers/base/devres.c:506 devres_release_group+0x1be/0x2a0 drivers/base/devres.c:689 hid_device_remove+0x107/0x260 drivers/hid/hid-core.c:2774 device_remove+0xc8/0x170 drivers/base/dd.c:567 __device_release_driver drivers/base/dd.c:1273 [inline] device_release_driver_internal+0x44a/0x610 drivers/base/dd.c:1296 bus_remove_device+0x22f/0x420 drivers/base/bus.c:579 device_del+0x396/0x9f0 drivers/base/core.c:3854 hid_remove_device drivers/hid/hid-core.c:2953 [inline] hid_destroy_device+0x19c/0x240 drivers/hid/hid-core.c:2975 usbhid_disconnect+0xa0/0xe0 drivers/hid/usbhid/hid-core.c:1458 usb_unbind_interface+0x1e2/0x960 drivers/usb/core/driver.c:458 device_remove drivers/base/dd.c:569 [inline] device_remove+0x122/0x170 drivers/base/dd.c:561 __device_release_driver drivers/base/dd.c:1273 [inline] device_release_driver_internal+0x44a/0x610 drivers/base/dd.c:1296 bus_remove_device+0x22f/0x420 drivers/base/bus.c:579 device_del+0x396/0x9f0 drivers/base/core.c:3854 usb_disable_device+0x36c/0x7f0 drivers/usb/core/message.c:1418 usb_disconnect+0x2e1/0x920 drivers/usb/core/hub.c:2316 hub_port_connect drivers/usb/core/hub.c:5373 [inline] hub_port_connect_change drivers/usb/core/hub.c:5673 [inline] port_event drivers/usb/core/hub.c:5833 [inline] hub_event+0x1bed/0x4f40 drivers/usb/core/hub.c:5915 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3236 process_scheduled_works kernel/workqueue.c:3317 [inline] worker_thread+0x6c8/0xf00 kernel/workqueue.c:3398 kthread+0x3af/0x750 kernel/kthread.c:464 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Last potentially related work creation: kasan_save_stack+0x33/0x60 mm/kasan/common.c:47 kasan_record_aux_stack+0x9b/0xb0 mm/kasan/generic.c:548 insert_work+0x36/0x230 kernel/workqueue.c:2183 __queue_work+0x97e/0x1080 kernel/workqueue.c:2339 queue_work_on+0x11a/0x140 kernel/workqueue.c:2390 hid_hw_close+0xaf/0xe0 drivers/hid/hid-core.c:2415 drop_ref+0x2c8/0x390 drivers/hid/hidraw.c:346 hidraw_disconnect+0x4b/0x60 drivers/hid/hidraw.c:642 hid_disconnect+0x13e/0x1b0 drivers/hid/hid-core.c:2325 hid_hw_stop+0x16/0x80 drivers/hid/hid-core.c:2370 steam_remove+0x1af/0x220 drivers/hid/hid-steam.c:1326 hid_device_remove+0xce/0x260 drivers/hid/hid-core.c:2769 device_remove+0xc8/0x170 drivers/base/dd.c:567 __device_release_driver drivers/base/dd.c:1273 [inline] device_release_driver_internal+0x44a/0x610 drivers/base/dd.c:1296 bus_remove_device+0x22f/0x420 drivers/base/bus.c:579 device_del+0x396/0x9f0 drivers/base/core.c:3854 hid_remove_device drivers/hid/hid-core.c:2953 [inline] hid_destroy_device+0x19c/0x240 drivers/hid/hid-core.c:2975 steam_remove+0xf0/0x220 drivers/hid/hid-steam.c:1334 hid_device_remove+0xce/0x260 drivers/hid/hid-core.c:2769 device_remove+0xc8/0x170 drivers/base/dd.c:567 __device_release_driver drivers/base/dd.c:1273 [inline] device_release_driver_internal+0x44a/0x610 drivers/base/dd.c:1296 bus_remove_device+0x22f/0x420 drivers/base/bus.c:579 device_del+0x396/0x9f0 drivers/base/core.c:3854 hid_remove_device drivers/hid/hid-core.c:2953 [inline] hid_destroy_device+0x19c/0x240 drivers/hid/hid-core.c:2975 usbhid_disconnect+0xa0/0xe0 drivers/hid/usbhid/hid-core.c:1458 usb_unbind_interface+0x1e2/0x960 drivers/usb/core/driver.c:458 device_remove drivers/base/dd.c:569 [inline] device_remove+0x122/0x170 drivers/base/dd.c:561 __device_release_driver drivers/base/dd.c:1273 [inline] device_release_driver_internal+0x44a/0x610 drivers/base/dd.c:1296 bus_remove_device+0x22f/0x420 drivers/base/bus.c:579 device_del+0x396/0x9f0 drivers/base/core.c:3854 usb_disable_device+0x36c/0x7f0 drivers/usb/core/message.c:1418 usb_disconnect+0x2e1/0x920 drivers/usb/core/hub.c:2316 hub_port_connect drivers/usb/core/hub.c:5373 [inline] hub_port_connect_change drivers/usb/core/hub.c:5673 [inline] port_event drivers/usb/core/hub.c:5833 [inline] hub_event+0x1bed/0x4f40 drivers/usb/core/hub.c:5915 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3236 process_scheduled_works kernel/workqueue.c:3317 [inline] worker_thread+0x6c8/0xf00 kernel/workqueue.c:3398 kthread+0x3af/0x750 kernel/kthread.c:464 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Second to last potentially related work creation: kasan_save_stack+0x33/0x60 mm/kasan/common.c:47 kasan_record_aux_stack+0x9b/0xb0 mm/kasan/generic.c:548 insert_work+0x36/0x230 kernel/workqueue.c:2183 __queue_work+0x97e/0x1080 kernel/workqueue.c:2339 queue_work_on+0x11a/0x140 kernel/workqueue.c:2390 queue_work include/linux/workqueue.h:662 [inline] schedule_work include/linux/workqueue.h:723 [inline] steam_client_ll_open+0xab/0xf0 drivers/hid/hid-steam.c:1146 hid_hw_open+0xe2/0x170 drivers/hid/hid-core.c:2392 hidraw_open+0x274/0x7e0 drivers/hid/hidraw.c:308 chrdev_open+0x237/0x6a0 fs/char_dev.c:414 do_dentry_open+0x6cb/0x1390 fs/open.c:956 vfs_open+0x82/0x3f0 fs/open.c:1086 do_open fs/namei.c:3830 [inline] path_openat+0x1e88/0x2d80 fs/namei.c:3989 do_filp_open+0x20c/0x470 fs/namei.c:4016 do_sys_openat2+0x17a/0x1e0 fs/open.c:1428 do_sys_open fs/open.c:1443 [inline] __do_sys_openat fs/open.c:1459 [inline] __se_sys_openat fs/open.c:1454 [inline] __x64_sys_openat+0x175/0x210 fs/open.c:1454 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f The buggy address belongs to the object at ffff88810df35800 which belongs to the cache kmalloc-1k of size 1024 The buggy address is located 304 bytes inside of freed 1024-byte region [ffff88810df35800, ffff88810df35c00) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10df30 head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0x200000000000040(head|node=0|zone=2) page_type: f5(slab) raw: 0200000000000040 ffff888100041dc0 dead000000000100 dead000000000122 raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000 head: 0200000000000040 ffff888100041dc0 dead000000000100 dead000000000122 head: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000 head: 0200000000000003 ffffea000437cc01 ffffffffffffffff 0000000000000000 head: 0000000000000008 0000000000000000 00000000ffffffff 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 2964, tgid 2964 (kworker/0:4), ts 65532168704, free_ts 64378220826 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x181/0x1b0 mm/page_alloc.c:1551 prep_new_page mm/page_alloc.c:1559 [inline] get_page_from_freelist+0xe76/0x2b90 mm/page_alloc.c:3477 __alloc_frozen_pages_noprof+0x21c/0x2290 mm/page_alloc.c:4739 alloc_pages_mpol+0xe7/0x410 mm/mempolicy.c:2270 alloc_slab_page mm/slub.c:2423 [inline] allocate_slab mm/slub.c:2587 [inline] new_slab+0x23d/0x330 mm/slub.c:2640 ___slab_alloc+0xc41/0x1670 mm/slub.c:3826 __slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3916 __slab_alloc_node mm/slub.c:3991 [inline] slab_alloc_node mm/slub.c:4152 [inline] __do_kmalloc_node mm/slub.c:4293 [inline] __kmalloc_node_track_caller_noprof+0x157/0x4c0 mm/slub.c:4313 alloc_dr drivers/base/devres.c:119 [inline] devm_kmalloc+0xa5/0x260 drivers/base/devres.c:843 devm_kzalloc include/linux/device.h:328 [inline] steam_probe+0x132/0x1060 drivers/hid/hid-steam.c:1241 __hid_device_probe drivers/hid/hid-core.c:2713 [inline] hid_device_probe+0x349/0x700 drivers/hid/hid-core.c:2750 call_driver_probe drivers/base/dd.c:579 [inline] really_probe+0x23e/0xa90 drivers/base/dd.c:658 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:800 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:830 __device_attach_driver+0x1df/0x310 drivers/base/dd.c:958 bus_for_each_drv+0x157/0x1e0 drivers/base/bus.c:462 page last free pid 2959 tgid 2959 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1127 [inline] free_frozen_pages+0x653/0xde0 mm/page_alloc.c:2660 __put_partials+0x14c/0x170 mm/slub.c:3153 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x4e/0x120 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x195/0x1e0 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x4e/0x70 mm/kasan/common.c:329 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4115 [inline] slab_alloc_node mm/slub.c:4164 [inline] kmem_cache_alloc_noprof+0x154/0x3b0 mm/slub.c:4171 skb_clone+0x190/0x3f0 net/core/skbuff.c:2084 do_one_broadcast net/netlink/af_netlink.c:1453 [inline] netlink_broadcast_filtered+0xb11/0xef0 net/netlink/af_netlink.c:1531 netlink_broadcast+0x39/0x50 net/netlink/af_netlink.c:1555 uevent_net_broadcast_untagged lib/kobject_uevent.c:331 [inline] kobject_uevent_net_broadcast lib/kobject_uevent.c:410 [inline] kobject_uevent_env+0xc69/0x1870 lib/kobject_uevent.c:608 device_add+0x10e0/0x1a70 drivers/base/core.c:3646 usb_set_configuration+0x10cb/0x1c50 drivers/usb/core/message.c:2210 usb_generic_driver_probe+0xb1/0x110 drivers/usb/core/generic.c:250 usb_probe_device+0xec/0x3e0 drivers/usb/core/driver.c:291 call_driver_probe drivers/base/dd.c:579 [inline] really_probe+0x23e/0xa90 drivers/base/dd.c:658 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:800 Memory state around the buggy address: ffff88810df35800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88810df35880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff88810df35900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88810df35980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88810df35a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== --- This report is generated by a bot. 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