Title | Repro | Cause bisect | Fix bisect | Count | Last | Reported |
---|---|---|---|---|---|---|
possible deadlock in usb_deregister_dev usb | C | 82 | 1854d | 1861d |
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Title | Replies (including bot) | Last reply |
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possible deadlock in usb_deregister_dev | 3 (7) | 2019/08/12 12:31 |
possible deadlock in iowarrior_open | 1 (2) | 2019/08/12 12:10 |
====================================================== WARNING: possible circular locking dependency detected 5.3.0-rc2+ #25 Not tainted ------------------------------------------------------ syz-executor.3/28182 is trying to acquire lock: 000000007fa43ae6 (iowarrior_open_disc_lock){+.+.}, at: iowarrior_open+0x8a/0x2a0 drivers/usb/misc/iowarrior.c:600 but task is already holding lock: 00000000ffe44d66 (iowarrior_mutex){+.+.}, at: iowarrior_open+0x23/0x2a0 drivers/usb/misc/iowarrior.c:589 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (iowarrior_mutex){+.+.}: __mutex_lock_common kernel/locking/mutex.c:930 [inline] __mutex_lock+0x158/0x1360 kernel/locking/mutex.c:1077 iowarrior_open+0x23/0x2a0 drivers/usb/misc/iowarrior.c:589 usb_open+0x1df/0x270 drivers/usb/core/file.c:48 chrdev_open+0x219/0x5c0 fs/char_dev.c:414 do_dentry_open+0x494/0x1120 fs/open.c:797 do_last fs/namei.c:3416 [inline] path_openat+0x1430/0x3f50 fs/namei.c:3533 do_filp_open+0x1a1/0x280 fs/namei.c:3563 do_sys_open+0x3c0/0x580 fs/open.c:1089 do_syscall_64+0xb7/0x580 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #1 (minor_rwsem){++++}: down_write+0x92/0x150 kernel/locking/rwsem.c:1500 usb_deregister_dev drivers/usb/core/file.c:238 [inline] usb_deregister_dev+0x61/0x270 drivers/usb/core/file.c:230 iowarrior_disconnect+0xa8/0x2c0 drivers/usb/misc/iowarrior.c:873 usb_unbind_interface+0x1bd/0x8a0 drivers/usb/core/driver.c:423 __device_release_driver drivers/base/dd.c:1120 [inline] device_release_driver_internal+0x404/0x4c0 drivers/base/dd.c:1151 bus_remove_device+0x2dc/0x4a0 drivers/base/bus.c:556 device_del+0x420/0xb10 drivers/base/core.c:2288 usb_disable_device+0x211/0x690 drivers/usb/core/message.c:1237 usb_disconnect+0x284/0x8d0 drivers/usb/core/hub.c:2199 hub_port_connect drivers/usb/core/hub.c:4949 [inline] hub_port_connect_change drivers/usb/core/hub.c:5213 [inline] port_event drivers/usb/core/hub.c:5359 [inline] hub_event+0x1454/0x3640 drivers/usb/core/hub.c:5441 process_one_work+0x92b/0x1530 kernel/workqueue.c:2269 worker_thread+0x96/0xe20 kernel/workqueue.c:2415 kthread+0x318/0x420 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 -> #0 (iowarrior_open_disc_lock){+.+.}: check_prev_add kernel/locking/lockdep.c:2405 [inline] check_prevs_add kernel/locking/lockdep.c:2507 [inline] validate_chain kernel/locking/lockdep.c:2897 [inline] __lock_acquire+0x1f7c/0x3b50 kernel/locking/lockdep.c:3880 lock_acquire+0x127/0x320 kernel/locking/lockdep.c:4412 __mutex_lock_common kernel/locking/mutex.c:930 [inline] __mutex_lock+0x158/0x1360 kernel/locking/mutex.c:1077 iowarrior_open+0x8a/0x2a0 drivers/usb/misc/iowarrior.c:600 usb_open+0x1df/0x270 drivers/usb/core/file.c:48 chrdev_open+0x219/0x5c0 fs/char_dev.c:414 do_dentry_open+0x494/0x1120 fs/open.c:797 do_last fs/namei.c:3416 [inline] path_openat+0x1430/0x3f50 fs/namei.c:3533 do_filp_open+0x1a1/0x280 fs/namei.c:3563 do_sys_open+0x3c0/0x580 fs/open.c:1089 do_syscall_64+0xb7/0x580 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe other info that might help us debug this: Chain exists of: iowarrior_open_disc_lock --> minor_rwsem --> iowarrior_mutex Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(iowarrior_mutex); lock(minor_rwsem); lock(iowarrior_mutex); lock(iowarrior_open_disc_lock); *** DEADLOCK *** 2 locks held by syz-executor.3/28182: #0: 00000000f32f5e0c (minor_rwsem){++++}, at: usb_open+0x23/0x270 drivers/usb/core/file.c:39 #1: 00000000ffe44d66 (iowarrior_mutex){+.+.}, at: iowarrior_open+0x23/0x2a0 drivers/usb/misc/iowarrior.c:589 stack backtrace: CPU: 1 PID: 28182 Comm: syz-executor.3 Not tainted 5.3.0-rc2+ #25 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0xca/0x13e lib/dump_stack.c:113 check_noncircular+0x345/0x3e0 kernel/locking/lockdep.c:1741 check_prev_add kernel/locking/lockdep.c:2405 [inline] check_prevs_add kernel/locking/lockdep.c:2507 [inline] validate_chain kernel/locking/lockdep.c:2897 [inline] __lock_acquire+0x1f7c/0x3b50 kernel/locking/lockdep.c:3880 lock_acquire+0x127/0x320 kernel/locking/lockdep.c:4412 __mutex_lock_common kernel/locking/mutex.c:930 [inline] __mutex_lock+0x158/0x1360 kernel/locking/mutex.c:1077 iowarrior_open+0x8a/0x2a0 drivers/usb/misc/iowarrior.c:600 usb_open+0x1df/0x270 drivers/usb/core/file.c:48 chrdev_open+0x219/0x5c0 fs/char_dev.c:414 do_dentry_open+0x494/0x1120 fs/open.c:797 do_last fs/namei.c:3416 [inline] path_openat+0x1430/0x3f50 fs/namei.c:3533 do_filp_open+0x1a1/0x280 fs/namei.c:3563 do_sys_open+0x3c0/0x580 fs/open.c:1089 do_syscall_64+0xb7/0x580 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x413711 Code: 75 14 b8 02 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 04 19 00 00 c3 48 83 ec 08 e8 0a fa ff ff 48 89 04 24 b8 02 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 53 fa ff ff 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:00007fa09df9e7a0 EFLAGS: 00000293 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 6666666666666667 RCX: 0000000000413711 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007fa09df9e850 RBP: 000000000075bf20 R08: 000000000000000f R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00007fa09df9f6d4 R13: 00000000004c8c12 R14: 00000000004dfb38 R15: 00000000ffffffff iowarrior 6-1:0.236: Error -90 while submitting URB
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2019/08/12 11:23 | https://github.com/google/kasan.git usb-fuzzer | e96407b49762 | 8620c2c2 | .config | console log | report | ci2-upstream-usb | |||||
2019/08/12 09:53 | https://github.com/google/kasan.git usb-fuzzer | e96407b49762 | 8620c2c2 | .config | console log | report | ci2-upstream-usb | |||||
2019/08/12 06:28 | https://github.com/google/kasan.git usb-fuzzer | e96407b49762 | acb51638 | .config | console log | report | ci2-upstream-usb | |||||
2019/08/12 04:55 | https://github.com/google/kasan.git usb-fuzzer | e96407b49762 | acb51638 | .config | console log | report | ci2-upstream-usb | |||||
2019/08/12 03:06 | https://github.com/google/kasan.git usb-fuzzer | e96407b49762 | acb51638 | .config | console log | report | ci2-upstream-usb | |||||
2019/08/12 01:14 | https://github.com/google/kasan.git usb-fuzzer | e96407b49762 | acb51638 | .config | console log | report | ci2-upstream-usb | |||||
2019/08/11 23:24 | https://github.com/google/kasan.git usb-fuzzer | e96407b49762 | acb51638 | .config | console log | report | ci2-upstream-usb | |||||
2019/08/11 22:17 | https://github.com/google/kasan.git usb-fuzzer | e96407b49762 | acb51638 | .config | console log | report | ci2-upstream-usb | |||||
2019/08/11 20:56 | https://github.com/google/kasan.git usb-fuzzer | e96407b49762 | acb51638 | .config | console log | report | ci2-upstream-usb | |||||
2019/08/11 18:55 | https://github.com/google/kasan.git usb-fuzzer | e96407b49762 | acb51638 | .config | console log | report | ci2-upstream-usb | |||||
2019/08/11 13:58 | https://github.com/google/kasan.git usb-fuzzer | e96407b49762 | acb51638 | .config | console log | report | ci2-upstream-usb | |||||
2019/08/11 11:20 | https://github.com/google/kasan.git usb-fuzzer | e96407b49762 | acb51638 | .config | console log | report | ci2-upstream-usb | |||||
2019/08/11 08:50 | https://github.com/google/kasan.git usb-fuzzer | e96407b49762 | acb51638 | .config | console log | report | ci2-upstream-usb | |||||
2019/08/11 06:18 | https://github.com/google/kasan.git usb-fuzzer | e96407b49762 | acb51638 | .config | console log | report | ci2-upstream-usb | |||||
2019/08/11 05:02 | https://github.com/google/kasan.git usb-fuzzer | e96407b49762 | acb51638 | .config | console log | report | ci2-upstream-usb | |||||
2019/08/11 02:34 | https://github.com/google/kasan.git usb-fuzzer | e96407b49762 | acb51638 | .config | console log | report | ci2-upstream-usb | |||||
2019/08/11 01:26 | https://github.com/google/kasan.git usb-fuzzer | e96407b49762 | acb51638 | .config | console log | report | ci2-upstream-usb | |||||
2019/08/10 20:59 | https://github.com/google/kasan.git usb-fuzzer | e96407b49762 | acb51638 | .config | console log | report | ci2-upstream-usb | |||||
2019/08/10 19:52 | https://github.com/google/kasan.git usb-fuzzer | e96407b49762 | acb51638 | .config | console log | report | ci2-upstream-usb | |||||
2019/08/10 18:22 | https://github.com/google/kasan.git usb-fuzzer | e96407b49762 | acb51638 | .config | console log | report | ci2-upstream-usb | |||||
2019/08/10 16:04 | https://github.com/google/kasan.git usb-fuzzer | e96407b49762 | acb51638 | .config | console log | report | ci2-upstream-usb | |||||
2019/08/10 14:10 | https://github.com/google/kasan.git usb-fuzzer | e96407b49762 | acb51638 | .config | console log | report | ci2-upstream-usb | |||||
2019/08/10 10:55 | https://github.com/google/kasan.git usb-fuzzer | e96407b49762 | acb51638 | .config | console log | report | ci2-upstream-usb | |||||
2019/08/10 09:04 | https://github.com/google/kasan.git usb-fuzzer | e96407b49762 | acb51638 | .config | console log | report | ci2-upstream-usb | |||||
2019/08/10 06:15 | https://github.com/google/kasan.git usb-fuzzer | e96407b49762 | acb51638 | .config | console log | report | ci2-upstream-usb | |||||
2019/08/10 02:23 | https://github.com/google/kasan.git usb-fuzzer | e96407b49762 | acb51638 | .config | console log | report | ci2-upstream-usb | |||||
2019/08/10 01:06 | https://github.com/google/kasan.git usb-fuzzer | e96407b49762 | aff9e255 | .config | console log | report | ci2-upstream-usb | |||||
2019/08/09 22:29 | https://github.com/google/kasan.git usb-fuzzer | e96407b49762 | aff9e255 | .config | console log | report | ci2-upstream-usb | |||||
2019/08/09 18:08 | https://github.com/google/kasan.git usb-fuzzer | e96407b49762 | aff9e255 | .config | console log | report | ci2-upstream-usb | |||||
2019/08/09 16:30 | https://github.com/google/kasan.git usb-fuzzer | e96407b49762 | aff9e255 | .config | console log | report | ci2-upstream-usb | |||||
2019/08/09 14:59 | https://github.com/google/kasan.git usb-fuzzer | e96407b49762 | aff9e255 | .config | console log | report | ci2-upstream-usb | |||||
2019/08/09 12:31 | https://github.com/google/kasan.git usb-fuzzer | e96407b49762 | ede31a9b | .config | console log | report | ci2-upstream-usb | |||||
2019/08/09 10:53 | https://github.com/google/kasan.git usb-fuzzer | e96407b49762 | ede31a9b | .config | console log | report | ci2-upstream-usb | |||||
2019/08/09 09:48 | https://github.com/google/kasan.git usb-fuzzer | e96407b49762 | ede31a9b | .config | console log | report | ci2-upstream-usb | |||||
2019/08/09 06:49 | https://github.com/google/kasan.git usb-fuzzer | e96407b49762 | ede31a9b | .config | console log | report | ci2-upstream-usb | |||||
2019/08/09 05:44 | https://github.com/google/kasan.git usb-fuzzer | e96407b49762 | ede31a9b | .config | console log | report | ci2-upstream-usb | |||||
2019/08/08 22:59 | https://github.com/google/kasan.git usb-fuzzer | e96407b49762 | bcc419e9 | .config | console log | report | ci2-upstream-usb | |||||
2019/08/08 21:00 | https://github.com/google/kasan.git usb-fuzzer | e96407b49762 | bcc419e9 | .config | console log | report | ci2-upstream-usb | |||||
2019/08/08 19:54 | https://github.com/google/kasan.git usb-fuzzer | e96407b49762 | bcc419e9 | .config | console log | report | ci2-upstream-usb | |||||
2019/08/08 17:38 | https://github.com/google/kasan.git usb-fuzzer | e96407b49762 | bcc419e9 | .config | console log | report | ci2-upstream-usb | |||||
2019/08/08 17:18 | https://github.com/google/kasan.git usb-fuzzer | e96407b49762 | bcc419e9 | .config | console log | report | ci2-upstream-usb | |||||
2019/08/08 16:03 | https://github.com/google/kasan.git usb-fuzzer | e96407b49762 | bcc419e9 | .config | console log | report | ci2-upstream-usb | |||||
2019/08/08 13:06 | https://github.com/google/kasan.git usb-fuzzer | e96407b49762 | e6ebef88 | .config | console log | report | ci2-upstream-usb | |||||
2019/08/08 11:47 | https://github.com/google/kasan.git usb-fuzzer | e96407b49762 | e6ebef88 | .config | console log | report | ci2-upstream-usb | |||||
2019/08/08 10:21 | https://github.com/google/kasan.git usb-fuzzer | e96407b49762 | e6ebef88 | .config | console log | report | ci2-upstream-usb | |||||
2019/08/08 08:58 | https://github.com/google/kasan.git usb-fuzzer | e96407b49762 | e6ebef88 | .config | console log | report | ci2-upstream-usb | |||||
2019/08/08 07:42 | https://github.com/google/kasan.git usb-fuzzer | e96407b49762 | e6ebef88 | .config | console log | report | ci2-upstream-usb | |||||
2019/07/31 15:01 | https://github.com/google/kasan.git usb-fuzzer | 7f7867ff95bf | 995b2a26 | .config | console log | report | ci2-upstream-usb |