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 all runs: crashed: WARNING: ODEBUG bug in smsusb_term_device testing current HEAD d25f27432f80a800a3592db128254c8140bd71bf testing commit d25f27432f80a800a3592db128254c8140bd71bf compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: e9c7cd1e297804e91ba5c20e45df378ddbe5a309abb5234582f5c142a46cb1b4 all runs: crashed: WARNING: ODEBUG bug in smsusb_term_device revisions tested: 2, total time: 20m37.484198265s (build: 13m1.031526593s, test: 6m55.412463562s) the crash still happens on HEAD commit msg: Merge tag 'arm-soc-fixes-5.15-3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc 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: 0 PID: 9107 at lib/debugobjects.c:505 debug_print_object+0x16e/0x250 lib/debugobjects.c:505 Modules linked in: CPU: 0 PID: 9107 Comm: kworker/0:8 Not tainted 5.15.0-rc7-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 c0 96 20 89 4c 89 ee 48 c7 c7 c0 8a 20 89 e8 69 6c 9e 04 <0f> 0b 83 05 a5 48 f4 08 01 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e c3 RSP: 0018:ffffc9000cd2ed58 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 RDX: 0000000000000001 RSI: ffffffff892086a0 RDI: fffff520019a5d9d RBP: 0000000000000001 R08: 0000000000000001 R09: ffff8880b9e2bf87 R10: ffffed10173c57f0 R11: 733a627375736d73 R12: ffffffff88ca7300 R13: ffffffff89209100 R14: ffffffff81436490 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007faa402b4710 CR3: 00000000798c1000 CR4: 0000000000350ef0 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+0xeb/0x1c0 mm/slub.c:1726 slab_free mm/slub.c:3492 [inline] kfree+0xf3/0x550 mm/slub.c:4552 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