bisecting fixing commit since 3dbdb38e286903ec220aaf1fb29a8d94297da246 building syzkaller on 8f5a7b8cde529e0a19a53f79bdf9c6cad306827b testing commit 3dbdb38e286903ec220aaf1fb29a8d94297da246 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 98d85a40ffe74e8cadb1f97794fa55fd13e1eff134d8babcbdf8c9c47a10cb7a all runs: crashed: WARNING in shark_write_reg/usb_submit_urb testing current HEAD f3f19f939c11925dadd3f4776f99f8c278a7017b testing commit f3f19f939c11925dadd3f4776f99f8c278a7017b compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 103b30e6bb5c142f410637040157dda33094d81aaf7adaefe905d534647c7ff4 run #0: basic kernel testing failed: BUG: program execution failed: executor NUM: failed to write control pipe: write |NUM: broken pipe run #1: crashed: WARNING in shark_write_reg/usb_submit_urb run #2: crashed: WARNING in shark_write_reg/usb_submit_urb run #3: crashed: WARNING in shark_write_reg/usb_submit_urb run #4: crashed: WARNING in shark_write_reg/usb_submit_urb run #5: crashed: WARNING in shark_write_reg/usb_submit_urb run #6: crashed: WARNING in shark_write_reg/usb_submit_urb run #7: crashed: WARNING in shark_write_reg/usb_submit_urb run #8: crashed: WARNING in shark_write_reg/usb_submit_urb run #9: crashed: WARNING in shark_write_reg/usb_submit_urb revisions tested: 2, total time: 19m11.0372275s (build: 12m6.392167489s, test: 6m11.004574723s) the crash still happens on HEAD commit msg: Merge tag 'net-5.18-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net crash: WARNING in shark_write_reg/usb_submit_urb usb 1-1: string descriptor 0 read error: -22 usb 1-1: New USB device found, idVendor=077d, idProduct=627a, bcdDevice= 0.10 usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 ------------[ cut here ]------------ usb 1-1: BOGUS urb xfer, pipe 1 != type 3 WARNING: CPU: 0 PID: 3643 at drivers/usb/core/urb.c:502 usb_submit_urb+0xb07/0x1680 drivers/usb/core/urb.c:502 Modules linked in: CPU: 0 PID: 3643 Comm: kworker/0:4 Not tainted 5.18.0-rc6-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+0xb07/0x1680 drivers/usb/core/urb.c:502 Code: 4c 24 18 89 4c 24 08 44 89 04 24 e8 e3 59 1c ff 44 8b 04 24 4c 89 e2 48 c7 c7 a0 c4 83 89 8b 4c 24 08 48 89 c6 e8 a1 97 4c 03 <0f> 0b 4c 8b 4c 24 18 e9 c0 fa ff ff 48 8d 7b 1c 48 ba 00 00 00 00 RSP: 0018:ffffc90002d0eec8 EFLAGS: 00010282 RAX: 0000000000000000 RBX: ffff88801cb0b000 RCX: 0000000000000000 RDX: 0000000000000001 RSI: 0000000000000004 RDI: fffff520005a1dcb RBP: ffff88801ea9dc00 R08: 0000000000000001 R09: ffff8880b9e279eb R10: ffffed10173c4f3d R11: 0000000000000001 R12: ffff888019241080 R13: 0000000000000002 R14: 0000000000000002 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4fcbd9a270 CR3: 000000007b450000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: usb_start_wait_urb+0xf9/0x450 drivers/usb/core/message.c:58 shark_write_reg+0x1f5/0x320 drivers/media/radio/radio-shark2.c:88 radio_tea5777_set_freq+0x1da/0x460 drivers/media/radio/radio-tea5777.c:213 radio_tea5777_init+0xb2/0x610 drivers/media/radio/radio-tea5777.c:541 usb_shark_probe+0x6ae/0x8e0 drivers/media/radio/radio-shark2.c:318 usb_probe_interface+0x274/0x6a0 drivers/usb/core/driver.c:396 call_driver_probe drivers/base/dd.c:542 [inline] really_probe+0x1c1/0x9d0 drivers/base/dd.c:621 __driver_probe_device+0x2a6/0x460 drivers/base/dd.c:752 driver_probe_device+0x44/0x110 drivers/base/dd.c:782 __device_attach_driver+0x185/0x250 drivers/base/dd.c:899 bus_for_each_drv+0x11e/0x1a0 drivers/base/bus.c:427 __device_attach+0x1db/0x410 drivers/base/dd.c:970 bus_probe_device+0x19d/0x250 drivers/base/bus.c:487 device_add+0x9ca/0x1b10 drivers/base/core.c:3405 usb_set_configuration+0xc91/0x1840 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:542 [inline] really_probe+0x1c1/0x9d0 drivers/base/dd.c:621 __driver_probe_device+0x2a6/0x460 drivers/base/dd.c:752 driver_probe_device+0x44/0x110 drivers/base/dd.c:782 __device_attach_driver+0x185/0x250 drivers/base/dd.c:899 bus_for_each_drv+0x11e/0x1a0 drivers/base/bus.c:427 __device_attach+0x1db/0x410 drivers/base/dd.c:970 bus_probe_device+0x19d/0x250 drivers/base/bus.c:487 device_add+0x9ca/0x1b10 drivers/base/core.c:3405 usb_new_device.cold+0x5d1/0xeeb drivers/usb/core/hub.c:2566 hub_port_connect drivers/usb/core/hub.c:5363 [inline] hub_port_connect_change drivers/usb/core/hub.c:5507 [inline] port_event drivers/usb/core/hub.c:5665 [inline] hub_event+0x114d/0x39b0 drivers/usb/core/hub.c:5747 process_one_work+0x865/0x13d0 kernel/workqueue.c:2289 worker_thread+0x598/0xec0 kernel/workqueue.c:2436 kthread+0x299/0x340 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298