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WARNING: proc registration bug in snd_info_card_register

Status: fixed on 2019/06/24 23:41
Subsystems: usb sound
[Documentation on labels]
Reported-by: syzbot+2e782bf6a60d0fcb932d@syzkaller.appspotmail.com
Fix commit: 0b074ab7fc0d ALSA: line6: Assure canceling delayed work at disconnection
First crash: 2051d, last: 2006d
▶ ▼ Duplicate bugs (1)
duplicates (1):
Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
WARNING: proc registration bug in snd_info_register usb sound C 250 2006d 2051d 0/28 closed as dup on 2019/04/16 14:08
▶ ▼ Discussions (2)
Title Replies (including bot) Last reply
Reminder: 9 open syzbot bugs in sound subsystem 1 (1) 2019/06/24 05:07
WARNING: proc registration bug in snd_info_card_register 0 (1) 2019/04/12 11:46

Sample crash report:
snd_usb_toneport 2-1:0.0: read request failed (error -71)
snd_usb_toneport 2-1:0.0: write request failed (error -71)
usb 2-1: send failed (error -71)
usb 2-1: send failed (error -71)
------------[ cut here ]------------
proc_dir_entry 'asound/PODStudioUX2' already registered
WARNING: CPU: 1 PID: 1477 at fs/proc/generic.c:359 proc_register+0x3d4/0x540 fs/proc/generic.c:359
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 1477 Comm: kworker/1:2 Not tainted 5.1.0-rc3+ #8
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: usb_hub_wq hub_event
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0xca/0x13e lib/dump_stack.c:113
 panic+0x292/0x5e1 kernel/panic.c:214
 __warn.cold+0x20/0x53 kernel/panic.c:571
 report_bug+0x262/0x2a0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:179 [inline]
 fixup_bug arch/x86/kernel/traps.c:174 [inline]
 do_error_trap+0x12b/0x1e0 arch/x86/kernel/traps.c:272
 do_invalid_op+0x32/0x40 arch/x86/kernel/traps.c:291
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:973
RIP: 0010:proc_register+0x3d4/0x540 fs/proc/generic.c:359
Code: ff df 48 89 f9 48 c1 e9 03 80 3c 01 00 0f 85 61 01 00 00 48 8b 04 24 48 c7 c7 20 27 cf 85 48 8b b0 d0 00 00 00 e8 f7 75 90 ff <0f> 0b 48 c7 c7 c0 14 db 86 e8 ee 87 e6 03 48 8b 4c 24 28 48 b8 00
RSP: 0018:ffff8881d7a16f60 EFLAGS: 00010282
RAX: 0000000000000000 RBX: ffff8881d9e815c0 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8127bbcd RDI: ffffed103af42dde
RBP: ffff8881d31c9a00 R08: ffff8881d7a01800 R09: ffffed103b663cd3
R10: ffffed103b663cd2 R11: ffff8881db31e697 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff8881cc0c20b8 R15: 000000000000000c
 proc_symlink+0x142/0x1c0 fs/proc/generic.c:451
 snd_info_card_register+0x146/0x1e0 sound/core/info.c:558
 snd_card_register sound/core/init.c:772 [inline]
 snd_card_register+0x433/0x5c0 sound/core/init.c:736
 toneport_init sound/usb/line6/toneport.c:457 [inline]
 toneport_init+0x251/0x637 sound/usb/line6/toneport.c:412
 line6_probe+0xafc/0x1140 sound/usb/line6/driver.c:784
 usb_probe_interface+0x30d/0x7b0 drivers/usb/core/driver.c:361
 really_probe+0x296/0x680 drivers/base/dd.c:509
 driver_probe_device+0xf9/0x200 drivers/base/dd.c:671
 __device_attach_driver+0x1c4/0x230 drivers/base/dd.c:778
 bus_for_each_drv+0x15e/0x1e0 drivers/base/bus.c:454
 __device_attach+0x21e/0x360 drivers/base/dd.c:844
 bus_probe_device+0x1ec/0x2a0 drivers/base/bus.c:514
 device_add+0xaf4/0x1700 drivers/base/core.c:2106
 usb_set_configuration+0xdf2/0x1670 drivers/usb/core/message.c:2023
 generic_probe+0x9d/0xd5 drivers/usb/core/generic.c:210
 usb_probe_device+0xa8/0x110 drivers/usb/core/driver.c:266
 really_probe+0x296/0x680 drivers/base/dd.c:509
 driver_probe_device+0xf9/0x200 drivers/base/dd.c:671
 __device_attach_driver+0x1c4/0x230 drivers/base/dd.c:778
 bus_for_each_drv+0x15e/0x1e0 drivers/base/bus.c:454
 __device_attach+0x21e/0x360 drivers/base/dd.c:844
 bus_probe_device+0x1ec/0x2a0 drivers/base/bus.c:514
 device_add+0xaf4/0x1700 drivers/base/core.c:2106
 usb_new_device.cold+0x8b8/0x1030 drivers/usb/core/hub.c:2534
 hub_port_connect drivers/usb/core/hub.c:5089 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5204 [inline]
 port_event drivers/usb/core/hub.c:5350 [inline]
 hub_event+0x1ac9/0x35a0 drivers/usb/core/hub.c:5432
 process_one_work+0x90a/0x1580 kernel/workqueue.c:2269
 process_scheduled_works kernel/workqueue.c:2331 [inline]
 worker_thread+0x7ab/0xe20 kernel/workqueue.c:2417
 kthread+0x30e/0x420 kernel/kthread.c:253
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (453):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2019/05/26 17:38 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce 85c57315 .config console log report syz C ci2-upstream-usb
2019/05/20 19:07 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce b5641f32 .config console log report syz C ci2-upstream-usb
2019/05/20 15:33 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce 5a4461b0 .config console log report syz C ci2-upstream-usb
2019/05/19 04:43 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce 5a4461b0 .config console log report syz C ci2-upstream-usb
2019/05/19 02:10 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce 5a4461b0 .config console log report syz C ci2-upstream-usb
2019/05/15 09:13 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce bd4e3ac7 .config console log report syz C ci2-upstream-usb
2019/05/15 01:26 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce 2e630085 .config console log report syz C ci2-upstream-usb
2019/05/15 01:01 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce 2e630085 .config console log report syz C ci2-upstream-usb
2019/05/14 21:46 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce 2e630085 .config console log report syz C ci2-upstream-usb
2019/05/14 19:03 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce 2e630085 .config console log report syz C ci2-upstream-usb
2019/05/08 14:16 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce a7383bfa .config console log report syz C ci2-upstream-usb
2019/05/08 13:33 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce a7383bfa .config console log report syz C ci2-upstream-usb
2019/05/08 12:41 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce a7383bfa .config console log report syz C ci2-upstream-usb
2019/05/08 08:27 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce a7383bfa .config console log report syz C ci2-upstream-usb
2019/05/07 08:25 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce 04e9d8ce .config console log report syz C ci2-upstream-usb
2019/05/06 11:39 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce d28f4ce5 .config console log report syz C ci2-upstream-usb
2019/05/06 10:27 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce d28f4ce5 .config console log report syz C ci2-upstream-usb
2019/05/06 08:27 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce d28f4ce5 .config console log report syz C ci2-upstream-usb
2019/05/06 07:11 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce d28f4ce5 .config console log report syz C ci2-upstream-usb
2019/05/06 05:51 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce d28f4ce5 .config console log report syz C ci2-upstream-usb
2019/05/06 05:08 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce d28f4ce5 .config console log report syz C ci2-upstream-usb
2019/05/06 04:00 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce d28f4ce5 .config console log report syz C ci2-upstream-usb
2019/05/06 01:09 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce d28f4ce5 .config console log report syz C ci2-upstream-usb
2019/05/05 17:50 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce d28f4ce5 .config console log report syz C ci2-upstream-usb
2019/05/05 11:36 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce d28f4ce5 .config console log report syz C ci2-upstream-usb
2019/05/05 10:52 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce d28f4ce5 .config console log report syz C ci2-upstream-usb
2019/05/05 09:53 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce d28f4ce5 .config console log report syz C ci2-upstream-usb
2019/05/05 05:31 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce d28f4ce5 .config console log report syz C ci2-upstream-usb
2019/05/05 02:00 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce d28f4ce5 .config console log report syz C ci2-upstream-usb
2019/05/04 20:50 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce d28f4ce5 .config console log report syz C ci2-upstream-usb
2019/05/04 18:22 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce d28f4ce5 .config console log report syz C ci2-upstream-usb
2019/04/12 06:32 https://github.com/google/kasan.git usb-fuzzer 9a33b36996cb 8916f5e1 .config console log report syz C ci2-upstream-usb
2019/05/15 07:55 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce bd4e3ac7 .config console log report syz ci2-upstream-usb
2019/05/14 23:58 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce 2e630085 .config console log report syz ci2-upstream-usb
2019/05/08 01:55 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce a7383bfa .config console log report syz ci2-upstream-usb
2019/05/07 15:27 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce 04e9d8ce .config console log report syz ci2-upstream-usb
2019/05/06 04:27 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce d28f4ce5 .config console log report syz ci2-upstream-usb
2019/05/06 03:15 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce d28f4ce5 .config console log report syz ci2-upstream-usb
2019/05/05 21:32 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce d28f4ce5 .config console log report syz ci2-upstream-usb
2019/05/05 19:50 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce d28f4ce5 .config console log report syz ci2-upstream-usb
2019/05/05 16:18 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce d28f4ce5 .config console log report syz ci2-upstream-usb
2019/05/05 13:12 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce d28f4ce5 .config console log report syz ci2-upstream-usb
2019/05/26 08:05 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce 85c57315 .config console log report ci2-upstream-usb
2019/05/25 12:21 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce 85c57315 .config console log report ci2-upstream-usb
2019/05/23 03:00 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce 84b9d384 .config console log report ci2-upstream-usb
2019/05/22 05:41 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce 84b9d384 .config console log report ci2-upstream-usb
2019/05/21 18:19 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce 13427bd9 .config console log report ci2-upstream-usb
2019/05/21 16:25 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce 13427bd9 .config console log report ci2-upstream-usb
2019/05/21 12:33 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce 8285069f .config console log report ci2-upstream-usb
2019/05/20 23:06 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce b5641f32 .config console log report ci2-upstream-usb
2019/05/20 21:47 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce b5641f32 .config console log report ci2-upstream-usb
2019/05/20 15:26 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce 5a4461b0 .config console log report ci2-upstream-usb
2019/05/20 03:20 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce 5a4461b0 .config console log report ci2-upstream-usb
2019/05/20 00:05 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce 5a4461b0 .config console log report ci2-upstream-usb
2019/05/19 19:31 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce 5a4461b0 .config console log report ci2-upstream-usb
2019/05/19 10:44 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce 5a4461b0 .config console log report ci2-upstream-usb
2019/05/19 09:32 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce 5a4461b0 .config console log report ci2-upstream-usb
2019/05/19 06:52 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce 5a4461b0 .config console log report ci2-upstream-usb
2019/05/18 16:39 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce 5a4461b0 .config console log report ci2-upstream-usb
2019/05/18 09:05 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce 5a4461b0 .config console log report ci2-upstream-usb
2019/05/18 04:38 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce 40046286 .config console log report ci2-upstream-usb
2019/05/17 23:57 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce 40046286 .config console log report ci2-upstream-usb
2019/05/17 06:49 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce 2755003a .config console log report ci2-upstream-usb
2019/05/16 23:06 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce 7fb690f3 .config console log report ci2-upstream-usb
2019/05/16 13:40 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce 051c49fe .config console log report ci2-upstream-usb
2019/05/16 06:30 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce 051c49fe .config console log report ci2-upstream-usb
2019/05/15 19:38 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce 27b25dbc .config console log report ci2-upstream-usb
2019/05/15 16:18 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce bd4e3ac7 .config console log report ci2-upstream-usb
2019/05/15 11:30 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce bd4e3ac7 .config console log report ci2-upstream-usb
2019/05/14 12:21 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce ada3c44c .config console log report ci2-upstream-usb
2019/05/14 08:45 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce ada3c44c .config console log report ci2-upstream-usb
2019/05/14 06:04 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce ada3c44c .config console log report ci2-upstream-usb
2019/05/14 05:03 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce 7c305b44 .config console log report ci2-upstream-usb
2019/05/14 02:55 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce 7c305b44 .config console log report ci2-upstream-usb
2019/05/13 13:47 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce 16ab1e89 .config console log report ci2-upstream-usb
2019/05/13 06:23 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce 16ab1e89 .config console log report ci2-upstream-usb
2019/05/13 04:22 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce 5f302c04 .config console log report ci2-upstream-usb
2019/05/13 02:03 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce 5f302c04 .config console log report ci2-upstream-usb
2019/05/12 19:29 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce 5f302c04 .config console log report ci2-upstream-usb
2019/05/12 15:53 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce c017728b .config console log report ci2-upstream-usb
2019/05/12 00:33 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce 0637a7f0 .config console log report ci2-upstream-usb
2019/05/11 06:14 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce 46caad94 .config console log report ci2-upstream-usb
2019/05/11 03:02 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce 46caad94 .config console log report ci2-upstream-usb
2019/05/11 01:55 https://github.com/google/kasan.git usb-fuzzer 43151d6c3fce 46caad94 .config console log report ci2-upstream-usb
* Struck through repros no longer work on HEAD.