kasan: CONFIG_KASAN_INLINE enabled[  179.838458] BUG: spinlock bad magic on CPU#1, syz-executor7/13214
 lock: 0xffff8801c79c0018, .magic: dead4eac, .owner: <none>/-1, .owner_cpu: -1
CPU: 1 PID: 13214 Comm: syz-executor7 Not tainted 4.4.125-g38f41ec #21
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 0000000000000000 403349f26ee97a76 ffff8800a0ae77c8 ffffffff81d067bd
 ffff8801c79c0018 ffff8801c6dfb000 ffffffffffff8018 ffff8801c79c0018
 ffffffff825b9520 ffff8800a0ae7808 ffffffff81246f8d ffff880100000000
Call Trace:
 [<ffffffff81d067bd>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d067bd>] dump_stack+0xc1/0x124 lib/dump_stack.c:51
 [<ffffffff81246f8d>] spin_dump+0x14d/0x280 kernel/locking/spinlock_debug.c:67
 [<ffffffff81247378>] spin_bug kernel/locking/spinlock_debug.c:75 [inline]
 [<ffffffff81247378>] debug_spin_lock_before kernel/locking/spinlock_debug.c:83 [inline]
 [<ffffffff81247378>] do_raw_spin_lock+0x228/0x2c0 kernel/locking/spinlock_debug.c:135
 [<ffffffff83779546>] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:119 [inline]
 [<ffffffff83779546>] _raw_spin_lock_irqsave+0x56/0x70 kernel/locking/spinlock.c:159
 [<ffffffff812200bf>] add_wait_queue+0x3f/0xa0 kernel/sched/wait.c:28
 [<ffffffff8155c591>] __pollwait+0x2b1/0x400 fs/select.c:232
 [<ffffffff825b95eb>] poll_wait include/linux/poll.h:45 [inline]
 [<ffffffff825b95eb>] sg_poll+0xcb/0x340 drivers/scsi/sg.c:1172
 [<ffffffff8155fc68>] do_pollfd fs/select.c:775 [inline]
 [<ffffffff8155fc68>] do_poll fs/select.c:825 [inline]
 [<ffffffff8155fc68>] do_sys_poll+0x538/0xcc0 fs/select.c:919
 [<ffffffff81560720>] SYSC_poll fs/select.c:977 [inline]
 [<ffffffff81560720>] SyS_poll+0x120/0x3f0 fs/select.c:965
 [<ffffffff81006d91>] do_syscall_32_irqs_on arch/x86/entry/common.c:392 [inline]
 [<ffffffff81006d91>] do_fast_syscall_32+0x321/0x8a0 arch/x86/entry/common.c:459
 [<ffffffff8377b2aa>] sysenter_flags_fixed+0xd/0x17
sd 0:0:1:0: [sg0] tag#31 FAILED Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK
sd 0:0:1:0: [sg0] tag#31 CDB: opcode=0xf2 (vendor)
sd 0:0:1:0: [sg0] tag#31 CDB[00]: f2 d8 05 70 ce c3 b6 7c b3 87 81 99 7d d7 e2 33
sd 0:0:1:0: [sg0] tag#31 CDB[10]: 74 88 c8 57 18 94 43 71 0c 4f 71 89 5e 19 1a 2d
sd 0:0:1:0: [sg0] tag#31 CDB[20]: 67 6c 23
kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 13210 Comm: syz-executor3 Not tainted 4.4.125-g38f41ec #21
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801c6df9800 task.stack: ffff8801b90d0000
RIP: 0010:[<ffffffff81435041>]  [<ffffffff81435041>] __read_once_size include/linux/compiler.h:218 [inline]
RIP: 0010:[<ffffffff81435041>]  [<ffffffff81435041>] atomic_read arch/x86/include/asm/atomic.h:27 [inline]
RIP: 0010:[<ffffffff81435041>]  [<ffffffff81435041>] put_page_testzero include/linux/mm.h:357 [inline]
RIP: 0010:[<ffffffff81435041>]  [<ffffffff81435041>] __free_pages+0x21/0x90 mm/page_alloc.c:3365
RSP: 0018:ffff8801b90d7968  EFLAGS: 00010a07
RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff825bb1fb
RDX: 1bd5a9d5a0000003 RSI: 0000000000000006 RDI: dead4ead0000001c
RBP: ffff8801b90d7978 R08: 0000000048000000 R09: 0000000000001e30
R10: 0000000000002100 R11: 1ffff1003721af0a R12: 0000000000000004
R13: 0000000000000020 R14: ffff8800b7b10000 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:00000000f5746b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 000000000813801c CR3: 00000000b20d2000 CR4: 0000000000160670
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 0000000000000246 ffff8800b7b10158 ffff8801b90d79d8 ffffffff825bb221
 ffff8800b7b10170 ffffed0016f6202b ffffed0016f6202e ffff8800b7b10168
 dead4ead00000000 ffff8800b7b10140 0000000000000000 0000000000000000
Call Trace:
 [<ffffffff825bb221>] sg_remove_scat.isra.17+0x1c1/0x2d0 drivers/scsi/sg.c:1956
 [<ffffffff825bb5d6>] sg_finish_rem_req+0x2a6/0x320 drivers/scsi/sg.c:1839
 [<ffffffff825bb7db>] sg_new_read+0x18b/0x420 drivers/scsi/sg.c:578
 [<ffffffff825bd35f>] sg_read+0x8cf/0x14d0 drivers/scsi/sg.c:466
 [<ffffffff8151e141>] do_loop_readv_writev+0x141/0x1e0 fs/read_write.c:680
 [<ffffffff81520cdf>] compat_do_readv_writev+0x5df/0x6e0 fs/read_write.c:984
 [<ffffffff81520eb9>] compat_readv+0xd9/0x140 fs/read_write.c:1013
 [<ffffffff81523228>] C_SYSC_readv fs/read_write.c:1033 [inline]
 [<ffffffff81523228>] compat_SyS_readv+0xd8/0x1b0 fs/read_write.c:1022
 [<ffffffff81006d91>] do_syscall_32_irqs_on arch/x86/entry/common.c:392 [inline]
 [<ffffffff81006d91>] do_fast_syscall_32+0x321/0x8a0 arch/x86/entry/common.c:459
 [<ffffffff8377b2aa>] sysenter_flags_fixed+0xd/0x17
Code: c6 a0 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  [<ffffffff81435041>] __read_once_size include/linux/compiler.h:218 [inline]
RIP  [<ffffffff81435041>] atomic_read arch/x86/include/asm/atomic.h:27 [inline]
RIP  [<ffffffff81435041>] put_page_testzero include/linux/mm.h:357 [inline]
RIP  [<ffffffff81435041>] __free_pages+0x21/0x90 mm/page_alloc.c:3365
 RSP <ffff8801b90d7968>
---[ end trace 4ffc7c169c62b296 ]---