bisecting fixing commit since c84e1efae022071a4fcf9f1899bf71777c49943a
building syzkaller on 76b4dcc777ca842ee42225411c5c9d5ac3e91b8a
testing commit c84e1efae022071a4fcf9f1899bf71777c49943a with gcc (GCC) 10.2.1 20210217
kernel signature: 7778a06bddc0a7823c2071b39026ea7ef72527ddce470132d61f5dc906a11d00
all runs: crashed: WARNING in port100_send_cmd_async/usb_submit_urb
testing current HEAD 7fef2edf7cc753b51f7ccc74993971b0a9c81eca
testing commit 7fef2edf7cc753b51f7ccc74993971b0a9c81eca with gcc (GCC) 10.2.1 20210217
kernel signature: 188d44658d738afadabd6f3dbcaed8434e8ded84158fe56aceb41197f141e020
run #0: crashed: BUG: sleeping function called from invalid context in lock_sock_nested
run #1: crashed: WARNING in port100_send_cmd_async/usb_submit_urb
run #2: crashed: WARNING in port100_send_cmd_async/usb_submit_urb
run #3: crashed: WARNING in port100_send_cmd_async/usb_submit_urb
run #4: crashed: WARNING in port100_send_cmd_async/usb_submit_urb
run #5: crashed: WARNING in port100_send_cmd_async/usb_submit_urb
run #6: crashed: WARNING in port100_send_cmd_async/usb_submit_urb
run #7: crashed: WARNING in port100_send_cmd_async/usb_submit_urb
run #8: crashed: WARNING in port100_send_cmd_async/usb_submit_urb
run #9: crashed: WARNING in port100_send_cmd_async/usb_submit_urb
revisions tested: 2, total time: 20m45.782484043s (build: 12m51.512976979s, test: 7m6.849253157s)
the crash still happens on HEAD
commit msg: sd: don't mess with SD_MINORS for CONFIG_DEBUG_BLOCK_EXT_DEVT
crash: WARNING in port100_send_cmd_async/usb_submit_urb
usb 1-1: string descriptor 0 read error: -32
------------[ cut here ]------------
URB 00000000f1e309f9 submitted while active
WARNING: CPU: 0 PID: 8672 at drivers/usb/core/urb.c:378 usb_submit_urb+0x10b2/0x16f0 drivers/usb/core/urb.c:378
Modules linked in:
CPU: 0 PID: 8672 Comm: kworker/0:3 Not tainted 5.14.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: usb_hub_wq hub_event
RIP: 0010:usb_submit_urb+0x10b2/0x16f0 drivers/usb/core/urb.c:378
Code: 9b 64 03 83 e3 01 b8 f0 ff ff ff 0f 85 8d fb ff ff 48 89 ee 48 c7 c7 a0 38 5d 89 89 04 24 c6 05 6b d6 c1 07 01 e8 47 5e 40 03 <0f> 0b 8b 04 24 e9 6a fb ff ff b8 ed ff ff ff e9 60 fb ff ff 66 90
RSP: 0018:ffffc900021eefa0 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffffffff891c81e0 RDI: fffff5200043dde6
RBP: ffff88801bfdbe00 R08: 0000000000000001 R09: ffff8880b9e2ff47
R10: ffffed10173c5fe8 R11: 3030303020425255 R12: ffff888013486b40
R13: ffff88801d58ac50 R14: ffff88802f917c00 R15: ffff88801d58ac48
FS:  0000000000000000(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f135997d000 CR3: 000000002f0da000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 port100_send_frame_async drivers/nfc/port100.c:780 [inline]
 port100_send_cmd_async+0x7ac/0xc60 drivers/nfc/port100.c:876
 port100_send_cmd_sync drivers/nfc/port100.c:916 [inline]
 port100_set_command_type drivers/nfc/port100.c:987 [inline]
 port100_probe+0xb3c/0x1180 drivers/nfc/port100.c:1567
 usb_probe_interface+0x274/0x6a0 drivers/usb/core/driver.c:396
 call_driver_probe drivers/base/dd.c:517 [inline]
 really_probe+0x1c9/0xb80 drivers/base/dd.c:595
 __driver_probe_device+0x2b5/0x470 drivers/base/dd.c:747
 driver_probe_device+0x44/0x130 drivers/base/dd.c:777
 __device_attach_driver+0x1ab/0x270 drivers/base/dd.c:894
 bus_for_each_drv+0x11e/0x1a0 drivers/base/bus.c:427
 __device_attach+0x1db/0x420 drivers/base/dd.c:965
 bus_probe_device+0x19d/0x250 drivers/base/bus.c:487
 device_add+0xa2f/0x1e10 drivers/base/core.c:3352
 usb_set_configuration+0x9fc/0x1750 drivers/usb/core/message.c:2170
 usb_generic_driver_probe+0x74/0xa0 drivers/usb/core/generic.c:238
 usb_probe_device+0x95/0x240 drivers/usb/core/driver.c:293
 call_driver_probe drivers/base/dd.c:517 [inline]
 really_probe+0x1c9/0xb80 drivers/base/dd.c:595
 __driver_probe_device+0x2b5/0x470 drivers/base/dd.c:747
 driver_probe_device+0x44/0x130 drivers/base/dd.c:777
 __device_attach_driver+0x1ab/0x270 drivers/base/dd.c:894
 bus_for_each_drv+0x11e/0x1a0 drivers/base/bus.c:427
 __device_attach+0x1db/0x420 drivers/base/dd.c:965
 bus_probe_device+0x19d/0x250 drivers/base/bus.c:487
 device_add+0xa2f/0x1e10 drivers/base/core.c:3352
 usb_new_device.cold+0x5cf/0xedf drivers/usb/core/hub.c:2559
 hub_port_connect drivers/usb/core/hub.c:5300 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5440 [inline]
 port_event drivers/usb/core/hub.c:5586 [inline]
 hub_event+0x10a3/0x36c0 drivers/usb/core/hub.c:5668
 process_one_work+0x84c/0x13f0 kernel/workqueue.c:2276
 worker_thread+0x598/0x1040 kernel/workqueue.c:2422
 kthread+0x38b/0x460 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295