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KMSAN: uninit-value in pegasus_probe

Status: fixed on 2021/11/10 00:50
Subsystems: usb
[Documentation on labels]
Reported-by: syzbot+02c9f70f3afae308464a@syzkaller.appspotmail.com
Fix commit: af35fc37354c net: pegasus: fix uninit-value in get_interrupt_interval
First crash: 1984d, last: 1220d
▶ ▼ Discussions (10)
Title Replies (including bot) Last reply
[PATCH 5.10 000/135] 5.10.58-rc1 review 159 (159) 2021/08/19 08:52
[PATCH 4.14 00/42] 4.14.244-rc1 review 46 (46) 2021/08/16 03:01
[PATCH 4.4 00/25] 4.4.281-rc1 review 30 (30) 2021/08/15 19:51
[PATCH 4.9 00/30] 4.9.280-rc1 review 34 (34) 2021/08/14 19:50
[PATCH 4.19 00/54] 4.19.203-rc1 review 64 (64) 2021/08/12 19:20
[PATCH 5.13 000/175] 5.13.10-rc1 review 183 (183) 2021/08/12 06:45
[PATCH 5.4 00/85] 5.4.140-rc1 review 91 (91) 2021/08/11 22:21
[PATCH] net: pegasus: fix uninit-value in get_interrupt_interval 11 (11) 2021/08/05 14:50
Reminder: 67 active syzbot reports in usb subsystem 1 (1) 2019/10/04 03:38
KMSAN: uninit-value in pegasus_probe 0 (1) 2019/10/03 19:59
▶ ▼ Last patch testing requests (2)
Created Duration User Patch Repo Result
2021/07/30 11:24 42m paskripkin@gmail.com patch https://github.com/google/kmsan.git master OK
2020/09/15 13:35 20m anant.thazhemadam@gmail.com https://github.com/google/kmsan.git master OK

Sample crash report:
usb 1-1: Product: syz
usb 1-1: Manufacturer: syz
usb 1-1: SerialNumber: syz
usb 1-1: config 0 descriptor??
(unnamed net_device) (uninitialized): read_eprom_word failed
=====================================================
BUG: KMSAN: uninit-value in get_interrupt_interval drivers/net/usb/pegasus.c:746 [inline]
BUG: KMSAN: uninit-value in pegasus_probe+0x10e7/0x4080 drivers/net/usb/pegasus.c:1152
CPU: 1 PID: 825 Comm: kworker/1:1 Not tainted 5.12.0-rc6-syzkaller #0
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:79 [inline]
 dump_stack+0x24c/0x2e0 lib/dump_stack.c:120
 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118
 __msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197
 get_interrupt_interval drivers/net/usb/pegasus.c:746 [inline]
 pegasus_probe+0x10e7/0x4080 drivers/net/usb/pegasus.c:1152
 usb_probe_interface+0xfcc/0x1520 drivers/usb/core/driver.c:396
 really_probe+0xe15/0x24d0 drivers/base/dd.c:561
 driver_probe_device+0x29d/0x3a0 drivers/base/dd.c:743
 __device_attach_driver+0x63f/0x830 drivers/base/dd.c:849
 bus_for_each_drv+0x2c8/0x3f0 drivers/base/bus.c:431
 __device_attach+0x56a/0x890 drivers/base/dd.c:917
 device_initial_probe+0x4a/0x60 drivers/base/dd.c:964
 bus_probe_device+0x17e/0x3d0 drivers/base/bus.c:491
 device_add+0x2c15/0x31d0 drivers/base/core.c:3242
 usb_set_configuration+0x3872/0x3eb0 drivers/usb/core/message.c:2164
 usb_generic_driver_probe+0x138/0x300 drivers/usb/core/generic.c:238
 usb_probe_device+0x317/0x570 drivers/usb/core/driver.c:293
 really_probe+0xe15/0x24d0 drivers/base/dd.c:561
 driver_probe_device+0x29d/0x3a0 drivers/base/dd.c:743
 __device_attach_driver+0x63f/0x830 drivers/base/dd.c:849
 bus_for_each_drv+0x2c8/0x3f0 drivers/base/bus.c:431
 __device_attach+0x56a/0x890 drivers/base/dd.c:917
 device_initial_probe+0x4a/0x60 drivers/base/dd.c:964
 bus_probe_device+0x17e/0x3d0 drivers/base/bus.c:491
 device_add+0x2c15/0x31d0 drivers/base/core.c:3242
 usb_new_device+0x1bd4/0x2a30 drivers/usb/core/hub.c:2555
 hub_port_connect drivers/usb/core/hub.c:5223 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5363 [inline]
 port_event drivers/usb/core/hub.c:5509 [inline]
 hub_event+0x5b99/0x8870 drivers/usb/core/hub.c:5591
 process_one_work+0x1219/0x1fe0 kernel/workqueue.c:2275
 worker_thread+0x10ec/0x2340 kernel/workqueue.c:2421
 kthread+0x521/0x560 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

Local variable ----data.i@pegasus_probe created at:
 get_interrupt_interval drivers/net/usb/pegasus.c:1151 [inline]
 pegasus_probe+0xe57/0x4080 drivers/net/usb/pegasus.c:1152
 get_interrupt_interval drivers/net/usb/pegasus.c:1151 [inline]
 pegasus_probe+0xe57/0x4080 drivers/net/usb/pegasus.c:1152
=====================================================
pegasus 1-1:0.172: can't reset MAC
pegasus: probe of 1-1:0.172 failed with error -5
(unnamed net_device) (uninitialized): read_eprom_word failed
=====================================================
BUG: KMSAN: uninit-value in get_interrupt_interval drivers/net/usb/pegasus.c:746 [inline]
BUG: KMSAN: uninit-value in pegasus_probe+0x10e7/0x4080 drivers/net/usb/pegasus.c:1152
CPU: 1 PID: 825 Comm: kworker/1:1 Tainted: G    B             5.12.0-rc6-syzkaller #0
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:79 [inline]
 dump_stack+0x24c/0x2e0 lib/dump_stack.c:120
 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118
 __msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197
 get_interrupt_interval drivers/net/usb/pegasus.c:746 [inline]
 pegasus_probe+0x10e7/0x4080 drivers/net/usb/pegasus.c:1152
 usb_probe_interface+0xfcc/0x1520 drivers/usb/core/driver.c:396
 really_probe+0xe15/0x24d0 drivers/base/dd.c:561
 driver_probe_device+0x29d/0x3a0 drivers/base/dd.c:743
 __device_attach_driver+0x63f/0x830 drivers/base/dd.c:849
 bus_for_each_drv+0x2c8/0x3f0 drivers/base/bus.c:431
 __device_attach+0x56a/0x890 drivers/base/dd.c:917
 device_initial_probe+0x4a/0x60 drivers/base/dd.c:964
 bus_probe_device+0x17e/0x3d0 drivers/base/bus.c:491
 device_add+0x2c15/0x31d0 drivers/base/core.c:3242
 usb_set_configuration+0x3872/0x3eb0 drivers/usb/core/message.c:2164
 usb_generic_driver_probe+0x138/0x300 drivers/usb/core/generic.c:238
 usb_probe_device+0x317/0x570 drivers/usb/core/driver.c:293
 really_probe+0xe15/0x24d0 drivers/base/dd.c:561
 driver_probe_device+0x29d/0x3a0 drivers/base/dd.c:743
 __device_attach_driver+0x63f/0x830 drivers/base/dd.c:849
 bus_for_each_drv+0x2c8/0x3f0 drivers/base/bus.c:431
 __device_attach+0x56a/0x890 drivers/base/dd.c:917
 device_initial_probe+0x4a/0x60 drivers/base/dd.c:964
 bus_probe_device+0x17e/0x3d0 drivers/base/bus.c:491
 device_add+0x2c15/0x31d0 drivers/base/core.c:3242
 usb_new_device+0x1bd4/0x2a30 drivers/usb/core/hub.c:2555
 hub_port_connect drivers/usb/core/hub.c:5223 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5363 [inline]
 port_event drivers/usb/core/hub.c:5509 [inline]
 hub_event+0x5b99/0x8870 drivers/usb/core/hub.c:5591
 process_one_work+0x1219/0x1fe0 kernel/workqueue.c:2275
 worker_thread+0x10ec/0x2340 kernel/workqueue.c:2421
 kthread+0x521/0x560 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

Local variable ----data.i@pegasus_probe created at:
 get_interrupt_interval drivers/net/usb/pegasus.c:1151 [inline]
 pegasus_probe+0xe57/0x4080 drivers/net/usb/pegasus.c:1152
 get_interrupt_interval drivers/net/usb/pegasus.c:1151 [inline]
 pegasus_probe+0xe57/0x4080 drivers/net/usb/pegasus.c:1152
=====================================================
pegasus 1-1:0.194: can't reset MAC
pegasus: probe of 1-1:0.194 failed with error -5
usb 1-1: USB disconnect, device number 2
usb 1-1: new full-speed USB device number 3 using dummy_hcd
usb 1-1: config 0 has an invalid interface number: 172 but max is 1
usb 1-1: config 0 contains an unexpected descriptor of type 0x2, skipping
usb 1-1: config 0 has an invalid interface number: 194 but max is 1
usb 1-1: config 0 has an invalid descriptor of length 0, skipping remainder of the config
usb 1-1: config 0 has no interface number 0
usb 1-1: config 0 has no interface number 1
usb 1-1: config 0 interface 172 altsetting 9 endpoint 0x4 has invalid maxpacket 558, setting to 64
usb 1-1: config 0 interface 172 altsetting 9 endpoint 0xD has invalid maxpacket 512, setting to 64
usb 1-1: config 0 interface 172 altsetting 9 endpoint 0x8 has invalid maxpacket 512, setting to 64
usb 1-1: config 0 interface 194 altsetting 64 endpoint 0xA has an invalid bInterval 127, changing to 4
usb 1-1: config 0 interface 194 altsetting 64 endpoint 0xA has invalid wMaxPacketSize 0
usb 1-1: config 0 interface 194 altsetting 64 has an invalid endpoint with address 0xA4, skipping
usb 1-1: config 0 interface 194 altsetting 64 has 2 endpoint descriptors, different from the interface descriptor's value: 16
usb 1-1: config 0 interface 172 has no altsetting 0
usb 1-1: config 0 interface 194 has no altsetting 0
usb 1-1: New USB device found, idVendor=07aa, idProduct=0004, bcdDevice=6e.8b
usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 1-1: Product: syz
usb 1-1: Manufacturer: syz
usb 1-1: config 0 descriptor??
usb 1-1: can't set config #0, error -71
usb 1-1: USB disconnect, device number 3
usb 1-1: new full-speed USB device number 4 using dummy_hcd
usb 1-1: config 0 has an invalid interface number: 172 but max is 1
usb 1-1: config 0 contains an unexpected descriptor of type 0x2, skipping
usb 1-1: config 0 has an invalid interface number: 194 but max is 1
usb 1-1: config 0 has an invalid descriptor of length 0, skipping remainder of the config
usb 1-1: config 0 has no interface number 0
usb 1-1: config 0 has no interface number 1
usb 1-1: config 0 interface 172 altsetting 9 endpoint 0x4 has invalid maxpacket 558, setting to 64
usb 1-1: config 0 interface 172 altsetting 9 endpoint 0xD has invalid maxpacket 512, setting to 64
usb 1-1: config 0 interface 172 altsetting 9 endpoint 0x8 has invalid maxpacket 512, setting to 64
usb 1-1: config 0 interface 194 altsetting 64 endpoint 0xA has an invalid bInterval 127, changing to 4
usb 1-1: config 0 interface 194 altsetting 64 endpoint 0xA has invalid wMaxPacketSize 0
usb 1-1: config 0 interface 194 altsetting 64 has an invalid endpoint with address 0xA4, skipping
usb 1-1: config 0 interface 194 altsetting 64 has 2 endpoint descriptors, different from the interface descriptor's value: 16
usb 1-1: config 0 interface 172 has no altsetting 0
usb 1-1: config 0 interface 194 has no altsetting 0
usb 1-1: New USB device found, idVendor=07aa, idProduct=0004, bcdDevice=6e.8b
usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 1-1: Product: syz
usb 1-1: Manufacturer: syz
usb 1-1: SerialNumber: syz
usb 1-1: config 0 descriptor??

Crashes (258):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2021/05/05 06:34 https://github.com/google/kmsan.git master 4ebaab5fb428 06c27ff5 .config console log report syz C ci-upstream-kmsan-gce KMSAN: uninit-value in pegasus_probe
2019/09/28 07:18 https://github.com/google/kmsan.git master 124037e07586 d8074e0b .config console log report syz C ci-upstream-kmsan-gce
2021/08/03 19:26 https://github.com/google/kmsan.git master fc388325c43b 6c236867 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in pegasus_probe
2021/07/30 15:31 https://github.com/google/kmsan.git master a2a37c61659d c585c7b0 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in pegasus_probe
2021/07/29 09:20 https://github.com/google/kmsan.git master 981c4ec7b5ad 9a4781d4 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in pegasus_probe
2021/07/28 22:37 https://github.com/google/kmsan.git master 981c4ec7b5ad 9a4781d4 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in pegasus_probe
2021/07/26 18:23 https://github.com/google/kmsan.git master e8a3c6c03fa1 fd511809 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in pegasus_probe
2021/07/23 07:00 https://github.com/google/kmsan.git master a43e029dee89 bc5f1d88 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in pegasus_probe
2021/07/18 15:39 https://github.com/google/kmsan.git master a0f3a2c4404f f115ae98 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in pegasus_probe
2021/07/13 09:46 https://github.com/google/kmsan.git master 57b5797c8013 f415556d .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in pegasus_probe
2021/07/12 03:38 https://github.com/google/kmsan.git master 57b5797c8013 8f5a7b8c .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in pegasus_probe
2021/07/09 16:19 https://github.com/google/kmsan.git master 57b5797c8013 281e815f .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in pegasus_probe
2021/07/05 07:46 https://github.com/google/kmsan.git master 57b5797c8013 55aa55c2 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in pegasus_probe
2021/07/05 05:59 https://github.com/google/kmsan.git master 57b5797c8013 55aa55c2 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in pegasus_probe
2021/07/03 23:41 https://github.com/google/kmsan.git master 57b5797c8013 55aa55c2 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in pegasus_probe
2021/06/25 17:17 https://github.com/google/kmsan.git master a520ce29b172 ae6bf8dd .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in pegasus_probe
2021/06/25 14:10 https://github.com/google/kmsan.git master a520ce29b172 0edbbe31 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in pegasus_probe
2021/06/22 06:45 https://github.com/google/kmsan.git master 6a6a67f21dec aba2b2fb .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in pegasus_probe
2021/06/12 16:45 https://github.com/google/kmsan.git master 6099c9da2f7d 1ba81399 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in pegasus_probe
2021/06/08 11:52 https://github.com/google/kmsan.git master 6099c9da2f7d b718257f .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in pegasus_probe
2021/06/07 18:55 https://github.com/google/kmsan.git master 6099c9da2f7d e59537be .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in pegasus_probe
2021/05/20 06:04 https://github.com/google/kmsan.git master 6099c9da2f7d a343ba6b .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in pegasus_probe
2021/05/18 08:42 https://github.com/google/kmsan.git master bdefec9ab855 a343ba6b .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in pegasus_probe
2021/05/16 22:51 https://github.com/google/kmsan.git master bdefec9ab855 f54a5c09 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in pegasus_probe
2021/05/15 07:37 https://github.com/google/kmsan.git master bdefec9ab855 8bdd5343 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in pegasus_probe
2021/05/13 00:01 https://github.com/google/kmsan.git master bdefec9ab855 ed7d41c5 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in pegasus_probe
2021/05/12 13:02 https://github.com/google/kmsan.git master bdefec9ab855 da958a4d .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in pegasus_probe
2021/05/10 10:17 https://github.com/google/kmsan.git master 4ebaab5fb428 bc5434be .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in pegasus_probe
2021/05/08 11:46 https://github.com/google/kmsan.git master 4ebaab5fb428 bc5434be .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in pegasus_probe
2021/05/02 22:08 https://github.com/google/kmsan.git master 4ebaab5fb428 77e2b668 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in pegasus_probe
2021/05/02 04:26 https://github.com/google/kmsan.git master 4ebaab5fb428 77e2b668 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in pegasus_probe
2021/04/27 20:34 https://github.com/google/kmsan.git master 4ebaab5fb428 805b5003 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in pegasus_probe
2021/04/27 04:23 https://github.com/google/kmsan.git master 4ebaab5fb428 805b5003 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in pegasus_probe
2021/04/23 06:58 https://github.com/google/kmsan.git master 4ebaab5fb428 590921a5 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in pegasus_probe
2021/04/15 18:26 https://github.com/google/kmsan.git master 4ebaab5fb428 fcdb12ba .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in pegasus_probe
2021/04/13 15:35 https://github.com/google/kmsan.git master 4ebaab5fb428 bfeda1b1 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in pegasus_probe
2021/04/13 00:53 https://github.com/google/kmsan.git master 4ebaab5fb428 bfeda1b1 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in pegasus_probe
2021/04/11 16:06 https://github.com/google/kmsan.git master 4ebaab5fb428 bfeda1b1 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in pegasus_probe
2021/04/11 14:13 https://github.com/google/kmsan.git master 4ebaab5fb428 bfeda1b1 .config console log report info ci-upstream-kmsan-gce KMSAN: uninit-value in pegasus_probe
2021/07/29 10:24 https://github.com/google/kmsan.git master 981c4ec7b5ad 9a4781d4 .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in pegasus_probe
2021/07/29 06:34 https://github.com/google/kmsan.git master 981c4ec7b5ad 9a4781d4 .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in pegasus_probe
2021/07/23 07:40 https://github.com/google/kmsan.git master a43e029dee89 bc5f1d88 .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in pegasus_probe
2021/07/02 20:13 https://github.com/google/kmsan.git master 57b5797c8013 55aa55c2 .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in pegasus_probe
2021/06/23 06:43 https://github.com/google/kmsan.git master 6a6a67f21dec aba2b2fb .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in pegasus_probe
2021/06/12 16:37 https://github.com/google/kmsan.git master 6099c9da2f7d 1ba81399 .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in pegasus_probe
2021/06/12 10:16 https://github.com/google/kmsan.git master 6099c9da2f7d 1ba81399 .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in pegasus_probe
2021/06/12 09:03 https://github.com/google/kmsan.git master 6099c9da2f7d 1ba81399 .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in pegasus_probe
2021/05/22 09:08 https://github.com/google/kmsan.git master 6099c9da2f7d 3c7fef33 .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in pegasus_probe
2021/04/12 08:24 https://github.com/google/kmsan.git master 4ebaab5fb428 bfeda1b1 .config console log report info ci-upstream-kmsan-gce-386 KMSAN: uninit-value in pegasus_probe
2019/07/01 17:34 https://github.com/google/kmsan.git master 41550654dedf 907bf746 .config console log report ci-upstream-kmsan-gce
2021/01/16 01:13 https://github.com/google/kmsan.git master 73d62e81b476 65a7a854 .config console log report info ci-upstream-kmsan-gce-386
* Struck through repros no longer work on HEAD.