bisecting fixing commit since 2d743660786ec51f5c1fefd5782bbdee7b227db0
building syzkaller on 6a81331a1d4c744da9204d02ec88d558f7eea9c9
testing commit 2d743660786ec51f5c1fefd5782bbdee7b227db0 with gcc (GCC) 10.2.1 20210217
kernel signature: 7515f9de622eacaa66c99aff61d2e97d3f53bcb5962fb849331d137f6c1c5b0d
all runs: crashed: WARNING in cm109_urb_irq_callback/usb_submit_urb
testing current HEAD cd1245d75ce93b8fd206f4b34eb58bcfe156d5e9
testing commit cd1245d75ce93b8fd206f4b34eb58bcfe156d5e9 with gcc (GCC) 10.2.1 20210217
kernel signature: 13d0ecf0662986ab69a02c1456d7ae61bd02e79123700c1e92ec6ee31cec6154
all runs: crashed: WARNING in cm109_urb_irq_callback/usb_submit_urb
revisions tested: 2, total time: 21m52.868607272s (build: 14m11.157837748s, test: 7m3.537198721s)
the crash still happens on HEAD
commit msg: Merge tag 'platform-drivers-x86-v5.13-3' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86
crash: WARNING in cm109_urb_irq_callback/usb_submit_urb
cm109 1-1:0.0: cm109_urb_irq_callback: urb status -71
------------[ cut here ]------------
URB 0000000045aa7aae submitted while active
WARNING: CPU: 0 PID: 10243 at drivers/usb/core/urb.c:378 usb_submit_urb+0xe51/0x1270 drivers/usb/core/urb.c:378
Modules linked in:
CPU: 0 PID: 10243 Comm: syz-executor.1 Not tainted 5.13.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:usb_submit_urb+0xe51/0x1270 drivers/usb/core/urb.c:378
Code: 3d 52 5b 6e 07 00 b8 f0 ff ff ff 0f 85 ec fc ff ff 4c 89 e6 48 c7 c7 60 f9 3d 89 89 04 24 c6 05 33 5b 6e 07 01 e8 d7 07 35 03 <0f> 0b 8b 04 24 e9 c9 fc ff ff 41 be 01 00 00 00 e9 b1 f7 ff ff b8
RSP: 0018:ffffc90000007a48 EFLAGS: 00010086
RAX: 0000000000000000 RBX: ffff888019699000 RCX: 0000000000000000
RDX: 0000000000000103 RSI: 0000000000000004 RDI: fffff52000000f3b
RBP: ffff888019699058 R08: 0000000000000001 R09: ffff8880ba01fa5b
R10: ffffed1017403f4b R11: 0000000000000026 R12: ffff888010c53000
R13: 0000000000000086 R14: 000000000000000f R15: ffff88801e650d00
FS:  00007f6c44e9e700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000005680c0 CR3: 0000000025e44000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 cm109_urb_irq_callback+0x5e1/0x980 drivers/input/misc/cm109.c:422
 __usb_hcd_giveback_urb+0x238/0x3f0 drivers/usb/core/hcd.c:1656
 dummy_timer+0xeb8/0x2eb0 drivers/usb/gadget/udc/dummy_hcd.c:1978
 call_timer_fn+0x163/0x4b0 kernel/time/timer.c:1431
 expire_timers kernel/time/timer.c:1476 [inline]
 __run_timers.part.0+0x52a/0x8b0 kernel/time/timer.c:1745
 __run_timers kernel/time/timer.c:1726 [inline]
 run_timer_softirq+0x9c/0x190 kernel/time/timer.c:1758
 __do_softirq+0x29b/0x9f6 kernel/softirq.c:559
 invoke_softirq kernel/softirq.c:433 [inline]
 __irq_exit_rcu+0x136/0x200 kernel/softirq.c:637
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649
 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1100
 </IRQ>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:647
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x38/0x70 kernel/locking/spinlock.c:191
Code: 74 24 10 e8 fa dd 04 f9 48 89 ef e8 92 56 05 f9 81 e3 00 02 00 00 75 25 9c 58 f6 c4 02 75 2d 48 85 db 74 01 fb bf 01 00 00 00 <e8> e3 50 f9 f8 65 8b 05 1c 1e b5 77 85 c0 74 0a 5b 5d c3 e8 b0 1b
RSP: 0018:ffffc9000aab7880 EFLAGS: 00000206
RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff1c86f52
RDX: 0000000000000000 RSI: ffffffff88aaf4e0 RDI: 0000000000000001
RBP: ffffffff8e9b6700 R08: 0000000000000001 R09: ffffffff8e42a8c7
R10: 0000000000000001 R11: 0000000000078087 R12: 1ffffffff1d36cdf
R13: 0000000000000000 R14: dead000000000100 R15: dffffc0000000000
 __debug_check_no_obj_freed lib/debugobjects.c:997 [inline]
 debug_check_no_obj_freed+0x20c/0x420 lib/debugobjects.c:1018
 free_pages_prepare mm/page_alloc.c:1303 [inline]
 __free_pages_ok+0x24f/0xcc0 mm/page_alloc.c:1572
 release_pages+0x4d0/0x1650 mm/swap.c:948
 tlb_batch_pages_flush mm/mmu_gather.c:49 [inline]
 tlb_flush_mmu_free mm/mmu_gather.c:242 [inline]
 tlb_flush_mmu mm/mmu_gather.c:249 [inline]
 tlb_finish_mmu+0x127/0x790 mm/mmu_gather.c:340
 unmap_region+0x23f/0x300 mm/mmap.c:2683
 __do_munmap+0x4b8/0x1050 mm/mmap.c:2912
 do_munmap mm/mmap.c:2923 [inline]
 munmap_vma_range mm/mmap.c:604 [inline]
 mmap_region+0x67d/0x14a0 mm/mmap.c:1756
 do_mmap+0x911/0x1030 mm/mmap.c:1587
 vm_mmap_pgoff+0x163/0x220 mm/util.c:519
 ksys_mmap_pgoff+0x3be/0x5f0 mm/mmap.c:1638
 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x466459
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f6c44e9e188 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000466459
RDX: 0000000001800003 RSI: 0000000000800000 RDI: 0000000020000000
RBP: 00000000004bf9fb R08: 0000000000000003 R09: 0000000000000000
R10: 0000000000000012 R11: 0000000000000246 R12: 000000000056bf60
R13: 00007ffce377086f R14: 00007f6c44e9e300 R15: 0000000000022000