bisecting fixing commit since d7c5303fbc8ac874ae3e597a5a0d3707dc0230b4 building syzkaller on 858ea628800647d5e5b68b11441e42b8ef5652c1 testing commit d7c5303fbc8ac874ae3e597a5a0d3707dc0230b4 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: d8165f52680818610eddee463aa8797ab98dff7fdf644d4388bca592bd487cbb run #0: crashed: WARNING: ODEBUG bug in corrupted run #1: crashed: WARNING: ODEBUG bug in smsusb_term_device run #2: crashed: WARNING: ODEBUG bug in smsusb_term_device run #3: crashed: WARNING: ODEBUG bug in smsusb_term_device run #4: crashed: WARNING: ODEBUG bug in smsusb_term_device run #5: crashed: WARNING: ODEBUG bug in smsusb_term_device run #6: crashed: WARNING: ODEBUG bug in smsusb_term_device run #7: crashed: WARNING: ODEBUG bug in smsusb_term_device run #8: crashed: WARNING: ODEBUG bug in smsusb_term_device run #9: crashed: WARNING: ODEBUG bug in smsusb_term_device run #10: crashed: WARNING: ODEBUG bug in smsusb_term_device run #11: crashed: WARNING: ODEBUG bug in smsusb_term_device run #12: crashed: WARNING: ODEBUG bug in smsusb_term_device run #13: crashed: WARNING: ODEBUG bug in smsusb_term_device run #14: crashed: WARNING: ODEBUG bug in smsusb_term_device run #15: crashed: WARNING: ODEBUG bug in smsusb_term_device run #16: crashed: WARNING: ODEBUG bug in smsusb_term_device run #17: crashed: WARNING: ODEBUG bug in smsusb_term_device run #18: crashed: WARNING: ODEBUG bug in smsusb_term_device run #19: crashed: WARNING: ODEBUG bug in smsusb_term_device testing current HEAD 7d42e98182586f57f376406d033f05fe135edb75 testing commit 7d42e98182586f57f376406d033f05fe135edb75 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 03d55999a524c93673690587b4808f6a8ee58e791ba23c3f9d45724178ee0790 all runs: crashed: WARNING: ODEBUG bug in smsusb_term_device revisions tested: 2, total time: 20m20.016040482s (build: 12m30.323379484s, test: 7m6.693466183s) the crash still happens on HEAD commit msg: Merge tag 'gpio-fixes-for-v5.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux crash: WARNING: ODEBUG bug in smsusb_term_device smsusb:smsusb_init_device: smscore_start_device(...) failed ------------[ cut here ]------------ ODEBUG: free active (active state 0) object type: work_struct hint: do_submit_urb+0x0/0x3e0 drivers/media/usb/siano/smsusb.c:146 WARNING: CPU: 1 PID: 2979 at lib/debugobjects.c:505 debug_print_object+0x16e/0x250 lib/debugobjects.c:505 Modules linked in: CPU: 1 PID: 2979 Comm: kworker/1:5 Not tainted 5.15.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: usb_hub_wq hub_event RIP: 0010:debug_print_object+0x16e/0x250 lib/debugobjects.c:505 Code: ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 af 00 00 00 48 8b 14 dd 00 93 20 89 4c 89 ee 48 c7 c7 00 87 20 89 e8 54 22 9e 04 <0f> 0b 83 05 65 5d f4 08 01 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e c3 RSP: 0018:ffffc900020ced38 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 RDX: 0000000000000001 RSI: ffffffff892082e0 RDI: fffff52000419d99 RBP: 0000000000000001 R08: 0000000000000001 R09: ffff8880b9f2bf87 R10: ffffed10173e57f0 R11: 203a47554245444f R12: ffffffff88ca7180 R13: ffffffff89208d40 R14: ffffffff814362a0 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055841bbb09e0 CR3: 000000001bb7f000 CR4: 0000000000350ee0 Call Trace: __debug_check_no_obj_freed lib/debugobjects.c:992 [inline] debug_check_no_obj_freed+0x301/0x420 lib/debugobjects.c:1023 slab_free_hook mm/slub.c:1675 [inline] slab_free_freelist_hook+0xde/0x190 mm/slub.c:1725 slab_free mm/slub.c:3483 [inline] kfree+0xe4/0x530 mm/slub.c:4543 smsusb_term_device+0x173/0x2a0 drivers/media/usb/siano/smsusb.c:350 smsusb_init_device+0x95b/0x9ce drivers/media/usb/siano/smsusb.c:487 smsusb_probe+0xbfd/0xc95 drivers/media/usb/siano/smsusb.c:566 usb_probe_interface+0x274/0x6a0 drivers/usb/core/driver.c:396 call_driver_probe drivers/base/dd.c:517 [inline] really_probe+0x1c2/0xb60 drivers/base/dd.c:596 __driver_probe_device+0x2a6/0x460 drivers/base/dd.c:751 driver_probe_device+0x44/0x110 drivers/base/dd.c:781 __device_attach_driver+0x185/0x250 drivers/base/dd.c:898 bus_for_each_drv+0x11e/0x1a0 drivers/base/bus.c:427 __device_attach+0x1db/0x410 drivers/base/dd.c:969 bus_probe_device+0x19d/0x250 drivers/base/bus.c:487 device_add+0xa5c/0x1e10 drivers/base/core.c:3359 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+0x1c2/0xb60 drivers/base/dd.c:596 __driver_probe_device+0x2a6/0x460 drivers/base/dd.c:751 driver_probe_device+0x44/0x110 drivers/base/dd.c:781 __device_attach_driver+0x185/0x250 drivers/base/dd.c:898 bus_for_each_drv+0x11e/0x1a0 drivers/base/bus.c:427 __device_attach+0x1db/0x410 drivers/base/dd.c:969 bus_probe_device+0x19d/0x250 drivers/base/bus.c:487 device_add+0xa5c/0x1e10 drivers/base/core.c:3359 usb_new_device.cold+0x5cf/0xedf drivers/usb/core/hub.c:2563 hub_port_connect drivers/usb/core/hub.c:5348 [inline] hub_port_connect_change drivers/usb/core/hub.c:5488 [inline] port_event drivers/usb/core/hub.c:5634 [inline] hub_event+0x10a3/0x36c0 drivers/usb/core/hub.c:5716 process_one_work+0x87f/0x1450 kernel/workqueue.c:2297 worker_thread+0x598/0x1040 kernel/workqueue.c:2444