bisecting fixing commit since 3dbdb38e286903ec220aaf1fb29a8d94297da246 building syzkaller on 1b20171a857edaeb6232e42ae1e0b783d4c5f666 testing commit 3dbdb38e286903ec220aaf1fb29a8d94297da246 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 98d85a40ffe74e8cadb1f97794fa55fd13e1eff134d8babcbdf8c9c47a10cb7a run #0: basic kernel testing failed: BUG: sleeping function called from invalid context in stack_depot_save run #1: basic kernel testing failed: BUG: sleeping function called from invalid context in stack_depot_save 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: possible deadlock in fs_reclaim_acquire run #19: crashed: WARNING: ODEBUG bug in smsusb_term_device testing current HEAD 6fedc28076bbbb32edb722e80f9406a3d1d668a8 testing commit 6fedc28076bbbb32edb722e80f9406a3d1d668a8 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: f64fced8882543e807dfeba73eea5c25ad17fc89db9ac4472c161f57e6389d3a all runs: crashed: WARNING: ODEBUG bug in smsusb_term_device revisions tested: 2, total time: 21m3.893492747s (build: 12m57.130609976s, test: 7m19.340781581s) the crash still happens on HEAD commit msg: Merge tag 'rcu.2021.11.01a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu 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: 6867 at lib/debugobjects.c:505 debug_print_object+0x16e/0x250 lib/debugobjects.c:505 Modules linked in: CPU: 1 PID: 6867 Comm: kworker/1:4 Not tainted 5.15.0-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 60 29 20 89 4c 89 ee 48 c7 c7 60 1d 20 89 e8 82 af 9e 04 <0f> 0b 83 05 c5 4e f5 08 01 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e c3 RSP: 0018:ffffc900036f6df8 EFLAGS: 00010086 RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 RDX: 0000000000000001 RSI: 0000000000000004 RDI: fffff520006dedb1 RBP: 0000000000000001 R08: 0000000000000001 R09: ffff8880b9f1faab R10: ffffed10173e3f55 R11: 203a47554245444f R12: ffffffff88ca6860 R13: ffffffff892023a0 R14: ffffffff8142c470 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fffd53a0f88 CR3: 000000007b3d3000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __debug_check_no_obj_freed lib/debugobjects.c:992 [inline] debug_check_no_obj_freed+0x301/0x420 lib/debugobjects.c:1023 kfree+0xd1/0x2c0 mm/slab.c:3802 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+0xa57/0x1b90 drivers/base/core.c:3396 usb_set_configuration+0xc1d/0x1710 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+0xa57/0x1b90 drivers/base/core.c:3396 usb_new_device.cold+0x5cf/0xee8 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 process_scheduled_works kernel/workqueue.c:2360 [inline] worker_thread+0x74b/0x1040 kernel/workqueue.c:2446 kthread+0x3ab/0x480 kernel/kthread.c:327 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295