program syz-executor2 not setting count and/or reply_len properly
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access[   59.125969] BUG: spinlock bad magic on CPU#1, modprobe/8779
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 8776 Comm: syz-executor2 Not tainted 4.4.114-g4e74e98 #5
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801ce013000 task.stack: ffff8800b0898000
RIP: 0010:[<ffffffff81434891>]  [<ffffffff81434891>] __read_once_size include/linux/compiler.h:218 [inline]
RIP: 0010:[<ffffffff81434891>]  [<ffffffff81434891>] atomic_read arch/x86/include/asm/atomic.h:27 [inline]
RIP: 0010:[<ffffffff81434891>]  [<ffffffff81434891>] put_page_testzero include/linux/mm.h:357 [inline]
RIP: 0010:[<ffffffff81434891>]  [<ffffffff81434891>] __free_pages+0x21/0x90 mm/page_alloc.c:3365
RSP: 0018:ffff8800b089f970  EFLAGS: 00010a07
RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff825b861b
RDX: 1bd5a9d5a0000003 RSI: 0000000000000002 RDI: dead4ead0000001c
RBP: ffff8800b089f980 R08: 0000000048000000 R09: 0000000000001e30
R10: 0000000000002100 R11: 1ffff10016113f0c R12: 0000000000000004
R13: 0000000000000020 R14: ffff8800b208c200 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:00000000f6ef1b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000f6f83bf0 CR3: 00000000b4c20000 CR4: 0000000000160670
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 0000000000000246 ffff8800b208c358 ffff8800b089f9e0 ffffffff825b8641
 ffff8800b208c370 ffffed001641186b ffffed001641186e ffff8800b208c368
 dead4ead00000000 ffff8800b208c340 0000000000000000 0000000000000000
Call Trace:
 [<ffffffff825b8641>] sg_remove_scat.isra.17+0x1c1/0x2d0 drivers/scsi/sg.c:1954
 [<ffffffff825b8a05>] sg_finish_rem_req+0x2b5/0x340 drivers/scsi/sg.c:1835
 [<ffffffff825b8c0d>] sg_new_read.isra.18+0x17d/0x3c0 drivers/scsi/sg.c:577
 [<ffffffff825ba72c>] sg_read+0x8bc/0x1490 drivers/scsi/sg.c:466
 [<ffffffff8151d891>] do_loop_readv_writev+0x141/0x1e0 fs/read_write.c:680
 [<ffffffff8152042f>] compat_do_readv_writev+0x5df/0x6e0 fs/read_write.c:984
 [<ffffffff81520609>] compat_readv+0xd9/0x140 fs/read_write.c:1013
 [<ffffffff81522978>] C_SYSC_readv fs/read_write.c:1033 [inline]
 [<ffffffff81522978>] compat_SyS_readv+0xd8/0x1b0 fs/read_write.c:1022
 [<ffffffff81006d74>] do_syscall_32_irqs_on arch/x86/entry/common.c:390 [inline]
 [<ffffffff81006d74>] do_fast_syscall_32+0x314/0x890 arch/x86/entry/common.c:457
 [<ffffffff83775c6a>] sysenter_flags_fixed+0xd/0x17
Code: c6 9f 0c 00 e9 78 fd ff ff 90 48 b8 00 00 00 00 00 fc ff df 55 48 89 e5 53 48 89 fb 48 83 c7 1c 48 89 fa 48 83 ec 08 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 49 
RIP  [<ffffffff81434891>] __read_once_size include/linux/compiler.h:218 [inline]
RIP  [<ffffffff81434891>] atomic_read arch/x86/include/asm/atomic.h:27 [inline]
RIP  [<ffffffff81434891>] put_page_testzero include/linux/mm.h:357 [inline]
RIP  [<ffffffff81434891>] __free_pages+0x21/0x90 mm/page_alloc.c:3365
 RSP <ffff8800b089f970>
---[ end trace fe83185f9a3057e2 ]---
Kernel panic - not syncing: Fatal exception
 lock: 0xffff8800b208a118, .magic: dead4eac, .owner: <none>/-1, .owner_cpu: -1
CPU: 1 PID: 8779 Comm: modprobe Tainted: G      D         4.4.114-g4e74e98 #5
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 0000000000000000 1d2cf6b60e2e6e4f ffff8801db3078d8 ffffffff81d03d2d
 ffff8800b208a118 ffff8801ce014800 0000000000000001 0000000000000001
 0000000000000000 ffff8801db307918 ffffffff81246a9d 0000000000000000
Call Trace:
 <IRQ>  [<ffffffff81d03d2d>] __dump_stack lib/dump_stack.c:15 [inline]
 <IRQ>  [<ffffffff81d03d2d>] dump_stack+0xc1/0x124 lib/dump_stack.c:51
 [<ffffffff81246a9d>] spin_dump+0x14d/0x280 kernel/locking/spinlock_debug.c:67
 [<ffffffff81246e88>] spin_bug kernel/locking/spinlock_debug.c:75 [inline]
 [<ffffffff81246e88>] debug_spin_lock_before kernel/locking/spinlock_debug.c:83 [inline]
 [<ffffffff81246e88>] do_raw_spin_lock+0x228/0x2c0 kernel/locking/spinlock_debug.c:135
 [<ffffffff83773eb6>] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:119 [inline]
 [<ffffffff83773eb6>] _raw_spin_lock_irqsave+0x56/0x70 kernel/locking/spinlock.c:159
 [<ffffffff8121f7de>] __wake_up+0x1e/0x50 kernel/sched/wait.c:94
 [<ffffffff825bbd0c>] sg_rq_end_io+0x5dc/0xbc0 drivers/scsi/sg.c:1385
 [<ffffffff81c98ae4>] __blk_mq_end_request+0x54/0xc0 block/blk-mq.c:311
 [<ffffffff82523a65>] scsi_end_request+0x135/0x5b0 drivers/scsi/scsi_lib.c:716
 [<ffffffff8252ccb3>] scsi_io_completion+0x15c3/0x1710 drivers/scsi/scsi_lib.c:918
 [<ffffffff825101ef>] scsi_finish_command+0x3af/0x520 drivers/scsi/scsi.c:607
 [<ffffffff8252a3b0>] scsi_softirq_done+0x250/0x350 drivers/scsi/scsi_lib.c:1654
 [<ffffffff81c9ad45>] blk_mq_ipi_complete_request block/blk-mq.c:356 [inline]
 [<ffffffff81c9ad45>] __blk_mq_complete_request+0x205/0x500 block/blk-mq.c:368
 [<ffffffff81c9b09b>] blk_mq_complete_request+0x5b/0x70 block/blk-mq.c:387
 [<ffffffff8252708b>] scsi_mq_done+0xfb/0x3c0 drivers/scsi/scsi_lib.c:1964
 [<ffffffff8254ff7f>] virtscsi_complete_cmd+0x5cf/0x7f0 drivers/scsi/virtio_scsi.c:210
 [<ffffffff8254dc99>] virtscsi_vq_done+0xc9/0x170 drivers/scsi/virtio_scsi.c:228
 [<ffffffff8254dde7>] virtscsi_req_done+0xa7/0xd0 drivers/scsi/virtio_scsi.c:243
 [<ffffffff81f2c709>] vring_interrupt+0x109/0x150 drivers/virtio/virtio_ring.c:722
 [<ffffffff8126e261>] handle_irq_event_percpu+0xf1/0x960 kernel/irq/handle.c:146
 [<ffffffff8126eb77>] handle_irq_event+0xa7/0x140 kernel/irq/handle.c:194
 [<ffffffff812788da>] handle_edge_irq+0x1fa/0x8e0 kernel/irq/chip.c:623
 [<ffffffff81016900>] generic_handle_irq_desc include/linux/irqdesc.h:140 [inline]
 [<ffffffff81016900>] handle_irq+0x250/0x3a0 arch/x86/kernel/irq_64.c:78
 [<ffffffff83776d99>] do_IRQ+0x89/0x1b0 arch/x86/kernel/irq.c:239
 [<ffffffff83774e60>] common_interrupt+0xa0/0xa0 arch/x86/entry/entry_64.S:592
 <EOI>  [<ffffffff81dacdce>] ? jhash2 include/linux/jhash.h:138 [inline]
 <EOI>  [<ffffffff81dacdce>] ? hash_stack lib/stackdepot.c:161 [inline]
 <EOI>  [<ffffffff81dacdce>] ? depot_save_stack+0x1fe/0x640 lib/stackdepot.c:217
 [<ffffffff81dacdce>] jhash2 include/linux/jhash.h:138 [inline]
 [<ffffffff81dacdce>] hash_stack lib/stackdepot.c:161 [inline]
 [<ffffffff81dacdce>] depot_save_stack+0x1fe/0x640 lib/stackdepot.c:217
 [<ffffffff814fd2a3>] save_stack+0xa3/0xd0 mm/kasan/kasan.c:518
 [<ffffffff814fd50d>] set_track mm/kasan/kasan.c:524 [inline]
 [<ffffffff814fd50d>] kasan_kmalloc+0xad/0xe0 mm/kasan/kasan.c:616
 [<ffffffff814fdae2>] kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:554
 [<ffffffff814f91ba>] slab_post_alloc_hook mm/slub.c:1349 [inline]
 [<ffffffff814f91ba>] slab_alloc_node mm/slub.c:2615 [inline]
 [<ffffffff814f91ba>] slab_alloc mm/slub.c:2623 [inline]
 [<ffffffff814f91ba>] kmem_cache_alloc+0xba/0x290 mm/slub.c:2628
 [<ffffffff8149cb69>] ptlock_alloc mm/memory.c:3901 [inline]
 [<ffffffff8149cb69>] ptlock_init include/linux/mm.h:1535 [inline]
 [<ffffffff8149cb69>] pgtable_pmd_page_ctor include/linux/mm.h:1627 [inline]
 [<ffffffff8149cb69>] pmd_alloc_one arch/x86/include/asm/pgalloc.h:87 [inline]
 [<ffffffff8149cb69>] __pmd_alloc+0xa9/0x3f0 mm/memory.c:3503
 [<ffffffff814a133d>] pmd_alloc include/linux/mm.h:1485 [inline]
 [<ffffffff814a133d>] __handle_mm_fault mm/memory.c:3357 [inline]
 [<ffffffff814a133d>] handle_mm_fault+0xe5d/0x3190 mm/memory.c:3455
 [<ffffffff810dc6cb>] __do_page_fault+0x35b/0xa00 arch/x86/mm/fault.c:1245
 [<ffffffff810dcd97>] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1308
 [<ffffffff83775708>] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1033
 [<ffffffff81d35112>] clear_user+0x82/0x110 arch/x86/lib/usercopy_64.c:52
 [<ffffffff81625f9c>] padzero fs/binfmt_elf.c:120 [inline]
 [<ffffffff81625f9c>] load_elf_binary+0x1cfc/0x4a20 fs/binfmt_elf.c:1036
 [<ffffffff8152fea2>] search_binary_handler+0x142/0x6b0 fs/exec.c:1471
 [<ffffffff815346d2>] exec_binprm fs/exec.c:1513 [inline]
 [<ffffffff815346d2>] do_execveat_common.isra.33+0x1492/0x1e60 fs/exec.c:1635
 [<ffffffff815350da>] do_execve+0x3a/0x50 fs/exec.c:1679
 [<ffffffff81170a0c>] call_usermodehelper_exec_async+0x29c/0x4d0 kernel/kmod.c:252
 [<ffffffff83774705>] ret_from_fork+0x55/0x80 arch/x86/entry/entry_64.S:506
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..