binder: unexpected work type, 4, not freed
binder: undelivered TRANSACTION_COMPLETE
binder: undelivered TRANSACTION_COMPLETE
binder: undelivered transaction 50, process died.
BUG: spinlock bad magic on CPU#1, syz-executor2/6476
 lock: 0xffff8801c49d2118, .magic: dead4eac, .owner: <none>/-1, .owner_cpu: -1
CPU: 1 PID: 6476 Comm: syz-executor2 Not tainted 4.9.74-g173c52e #4
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801c4e3fc08 ffffffff81d91b09 ffff8801c49d2118 ffff8801c615c800
 ffff8801cb9a4abc ffff8801c49d2118 ffff8801cb0e6d18 ffff8801c4e3fc48
 ffffffff812465cd ffffffff81221c1f ffff880100000000 0000000000000000
Call Trace:
 [<ffffffff81d91b09>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d91b09>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff812465cd>] spin_dump+0x14d/0x280 kernel/locking/spinlock_debug.c:67
 [<ffffffff81246904>] spin_bug kernel/locking/spinlock_debug.c:75 [inline]
 [<ffffffff81246904>] debug_spin_lock_before kernel/locking/spinlock_debug.c:83 [inline]
 [<ffffffff81246904>] do_raw_spin_lock+0x174/0x1e0 kernel/locking/spinlock_debug.c:112
 [<ffffffff838af8d6>] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:119 [inline]
 [<ffffffff838af8d6>] _raw_spin_lock_irqsave+0x56/0x70 kernel/locking/spinlock.c:159
 [<ffffffff81221c1f>] add_wait_queue+0x3f/0xa0 kernel/sched/wait.c:28
 [<ffffffff8164d09d>] ep_ptable_queue_proc+0x1bd/0x2b0 fs/eventpoll.c:1138
 [<ffffffff82662bdb>] poll_wait include/linux/poll.h:45 [inline]
 [<ffffffff82662bdb>] sg_poll+0xcb/0x340 drivers/scsi/sg.c:1170
 [<ffffffff816524b7>] ep_item_poll fs/eventpoll.c:811 [inline]
 [<ffffffff816524b7>] ep_insert fs/eventpoll.c:1347 [inline]
 [<ffffffff816524b7>] SYSC_epoll_ctl fs/eventpoll.c:1975 [inline]
 [<ffffffff816524b7>] SyS_epoll_ctl+0x11d7/0x2190 fs/eventpoll.c:1861
 [<ffffffff838afa85>] entry_SYSCALL_64_fastpath+0x23/0xc6
netlink: 9 bytes leftover after parsing attributes in process `syz-executor1'.
A link change request failed with some changes committed already. Interface lo may have been left with an inconsistent configuration, please check.
binder: 6459:6480 ERROR: BC_REGISTER_LOOPER called without request
binder: 6459:6468 got reply transaction with bad transaction stack, transaction 54 has target 6459:0
binder: 6459:6468 transaction failed 29201/-71, size 24-8 line 2935
binder: release 6459:6468 transaction 54 out, still active
binder: undelivered TRANSACTION_COMPLETE
binder: undelivered TRANSACTION_ERROR: 29201
binder: send failed reply for transaction 54, target dead
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 6462 Comm: syz-executor3 Not tainted 4.9.74-g173c52e #4
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801c491e000 task.stack: ffff8801c4f88000
RIP: 0010:[<ffffffff8144caa1>]  [<ffffffff8144caa1>] __read_once_size include/linux/compiler.h:243 [inline]
RIP: 0010:[<ffffffff8144caa1>]  [<ffffffff8144caa1>] atomic_read arch/x86/include/asm/atomic.h:26 [inline]
RIP: 0010:[<ffffffff8144caa1>]  [<ffffffff8144caa1>] page_ref_count include/linux/page_ref.h:66 [inline]
RIP: 0010:[<ffffffff8144caa1>]  [<ffffffff8144caa1>] put_page_testzero include/linux/mm.h:450 [inline]
RIP: 0010:[<ffffffff8144caa1>]  [<ffffffff8144caa1>] __free_pages+0x21/0x80 mm/page_alloc.c:3903
RSP: 0018:ffff8801c4f8fab0  EFLAGS: 00010a07
RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff826647eb
RDX: 1bd5a9d5a0000003 RSI: 0000000000000001 RDI: dead4ead0000001c
RBP: ffff8801c4f8fac0 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000000 R11: ffff8801c491e000 R12: 0000000000000004
R13: 0000000000000020 R14: ffff8801c49d0000 R15: dffffc0000000000
FS:  00007fb21eee6700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000018cacd8 CR3: 00000001c57aa000 CR4: 00000000001606e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 0000000000000001 ffff8801c49d0158 ffff8801c4f8fb20 ffffffff82664811
 ffff8801c49d0170 ffffed003893a02b ffffed003893a02e ffff8801c49d0168
 dead4ead00000000 ffff8801c49d0140 0000000000000000 0000000000000000
Call Trace:
 [<ffffffff82664811>] sg_remove_scat.isra.19+0x1c1/0x2d0 drivers/scsi/sg.c:1954
 [<ffffffff82664bd5>] sg_finish_rem_req+0x2b5/0x340 drivers/scsi/sg.c:1836
 [<ffffffff82664fb6>] sg_new_read.isra.20+0x356/0x3e0 drivers/scsi/sg.c:567
 [<ffffffff8266688d>] sg_read+0x8bd/0x1440 drivers/scsi/sg.c:456
 [<ffffffff81569353>] __vfs_read+0x103/0x670 fs/read_write.c:452
 [<ffffffff8156d0ee>] vfs_read+0x11e/0x380 fs/read_write.c:475
 [<ffffffff81570e19>] SYSC_read fs/read_write.c:591 [inline]
 [<ffffffff81570e19>] SyS_read+0xd9/0x1b0 fs/read_write.c:584
 [<ffffffff838afa85>] entry_SYSCALL_64_fastpath+0x23/0xc6
Code: e9 27 fc ff ff 0f 1f 44 00 00 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 3d 
RIP  [<ffffffff8144caa1>] __read_once_size include/linux/compiler.h:243 [inline]
RIP  [<ffffffff8144caa1>] atomic_read arch/x86/include/asm/atomic.h:26 [inline]
RIP  [<ffffffff8144caa1>] page_ref_count include/linux/page_ref.h:66 [inline]
RIP  [<ffffffff8144caa1>] put_page_testzero include/linux/mm.h:450 [inline]
RIP  [<ffffffff8144caa1>] __free_pages+0x21/0x80 mm/page_alloc.c:3903
 RSP <ffff8801c4f8fab0>
---[ end trace 636d24f2a3d13a6f ]---