IPVS: Creating netns size=2536 id=48
==================================================================
BUG: KASAN: wild-memory-access on address ffe708746eaab000
Read of size 37 by task syz-executor7/21062
CPU: 0 PID: 21062 Comm: syz-executor7 Not tainted 4.9.52-gc30c69c #54
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801cf5c7ae8 ffffffff81d93149 ffe708746eaab000 0000000000000025
 0000000000000000 ffff8801a6a21ba0 ffe708746eaab000 ffff8801cf5c7b70
 ffffffff8153d08f 0000000000000000 0000000000000001 ffffffff826648db
Call Trace:
 [<ffffffff81d93149>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d93149>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff8153d08f>] kasan_report_error mm/kasan/report.c:284 [inline]
 [<ffffffff8153d08f>] kasan_report.part.1+0x40f/0x500 mm/kasan/report.c:309
 [<ffffffff8153d460>] kasan_report+0x20/0x30 mm/kasan/report.c:296
 [<ffffffff8153bda7>] check_memory_region_inline mm/kasan/kasan.c:308 [inline]
 [<ffffffff8153bda7>] check_memory_region+0x137/0x190 mm/kasan/kasan.c:315
 [<ffffffff8153be11>] kasan_check_read+0x11/0x20 mm/kasan/kasan.c:320
 [<ffffffff826648db>] __copy_to_user arch/x86/include/asm/uaccess_64.h:182 [inline]
 [<ffffffff826648db>] sg_read_oxfer drivers/scsi/sg.c:1978 [inline]
 [<ffffffff826648db>] sg_read+0x124b/0x1400 drivers/scsi/sg.c:520
 [<ffffffff8156d353>] __vfs_read+0x103/0x670 fs/read_write.c:452
 [<ffffffff8156e8e7>] vfs_read+0x107/0x330 fs/read_write.c:475
 [<ffffffff815724c9>] SYSC_read fs/read_write.c:591 [inline]
 [<ffffffff815724c9>] SyS_read+0xd9/0x1b0 fs/read_write.c:584
 [<ffffffff838ac5c5>] entry_SYSCALL_64_fastpath+0x23/0xc6
==================================================================
IPVS: Creating netns size=2536 id=49
netlink: 4 bytes leftover after parsing attributes in process `syz-executor1'.
pktgen: kernel_thread() failed for cpu 0
pktgen: Cannot create thread for cpu 0 (-4)
pktgen: kernel_thread() failed for cpu 1
pktgen: Cannot create thread for cpu 1 (-4)
pktgen: Initialization failed for all threads
pktgen: kernel_thread() failed for cpu 0
pktgen: Cannot create thread for cpu 0 (-4)
pktgen: kernel_thread() failed for cpu 1
pktgen: Cannot create thread for cpu 1 (-4)
pktgen: Initialization failed for all threads
keychord: using input dev AT Translated Set 2 keyboard for fevent
netlink: 12 bytes leftover after parsing attributes in process `syz-executor1'.
keychord: invalid keycode count 0
keychord: using input dev AT Translated Set 2 keyboard for fevent
keychord: invalid keycode count 0
binder: 21373:21377 ioctl 2401 6 returned -22
program syz-executor6 is using a deprecated SCSI ioctl, please convert it to SG_IO
sd 0:0:1:0: ioctl_internal_command: ILLEGAL REQUEST asc=0x20 ascq=0x0
binder: 21373:21377 ioctl 40045402 20b8affc returned -22
program syz-executor6 is using a deprecated SCSI ioctl, please convert it to SG_IO
binder: 21373:21377 ioctl 2401 6 returned -22
binder: 21373:21377 ioctl 40045402 20b8affc returned -22
sd 0:0:1:0: ioctl_internal_command: ILLEGAL REQUEST asc=0x20 ascq=0x0
pktgen: kernel_thread() failed for cpu 0
pktgen: Cannot create thread for cpu 0 (-4)
pktgen: kernel_thread() failed for cpu 1
pktgen: Cannot create thread for cpu 1 (-4)
pktgen: Initialization failed for all threads
pktgen: kernel_thread() failed for cpu 0
pktgen: Cannot create thread for cpu 0 (-4)
pktgen: kernel_thread() failed for cpu 1
pktgen: Cannot create thread for cpu 1 (-4)
pktgen: Initialization failed for all threads
pktgen: kernel_thread() failed for cpu 0
pktgen: Cannot create thread for cpu 0 (-4)
pktgen: kernel_thread() failed for cpu 1
pktgen: Cannot create thread for cpu 1 (-4)
pktgen: Initialization failed for all threads
sg_write: data in/out 93/34 bytes for SCSI command 0xfc-- guessing data in;
   program syz-executor2 not setting count and/or reply_len properly
sg_write: data in/out 93/34 bytes for SCSI command 0xfc-- guessing data in;
   program syz-executor2 not setting count and/or reply_len properly
device lo entered promiscuous mode
device lo left promiscuous mode
device lo entered promiscuous mode
pktgen: kernel_thread() failed for cpu 0
pktgen: Cannot create thread for cpu 0 (-4)
pktgen: kernel_thread() failed for cpu 1
pktgen: Cannot create thread for cpu 1 (-4)
pktgen: Initialization failed for all threads
device lo left promiscuous mode
pktgen: kernel_thread() failed for cpu 0
pktgen: Cannot create thread for cpu 0 (-4)
pktgen: kernel_thread() failed for cpu 1
pktgen: Cannot create thread for cpu 1 (-4)
pktgen: Initialization failed for all threads
pktgen: kernel_thread() failed for cpu 0
pktgen: Cannot create thread for cpu 0 (-4)
pktgen: kernel_thread() failed for cpu 1
pktgen: Cannot create thread for cpu 1 (-4)
pktgen: Initialization failed for all threads
device syz3 entered promiscuous mode
IPVS: Creating netns size=2536 id=50
keychord: invalid keycode count 0
keychord: invalid keycode count 0
pktgen: kernel_thread() failed for cpu 0
pktgen: Cannot create thread for cpu 0 (-4)
pktgen: kernel_thread() failed for cpu 1
pktgen: Cannot create thread for cpu 1 (-4)
pktgen: Initialization failed for all threads
pktgen: kernel_thread() failed for cpu 0
pktgen: Cannot create thread for cpu 0 (-4)
pktgen: kernel_thread() failed for cpu 1
pktgen: Cannot create thread for cpu 1 (-4)
pktgen: Initialization failed for all threads
keychord: using input dev AT Translated Set 2 keyboard for fevent
FAULT_FLAG_ALLOW_RETRY missing 30
CPU: 1 PID: 21674 Comm: syz-executor1 Tainted: G    B           4.9.52-gc30c69c #54
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801d91779a0 ffffffff81d93149 ffff8801d9177c80 0000000000000000
 ffff8801ad31e710 ffff8801d9177b70 ffff8801ad31e600 ffff8801d9177b98
 ffffffff81660dc8 ffff8801d9177af0 0000000000000000 00000001a82b0067
Call Trace:
 [<ffffffff81d93149>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d93149>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81660dc8>] handle_userfault+0xa48/0x1300 fs/userfaultfd.c:323
 [<ffffffff814cfd71>] do_anonymous_page mm/memory.c:2747 [inline]
 [<ffffffff814cfd71>] handle_pte_fault mm/memory.c:3488 [inline]
 [<ffffffff814cfd71>] __handle_mm_fault mm/memory.c:3577 [inline]
 [<ffffffff814cfd71>] handle_mm_fault+0x1fd1/0x2530 mm/memory.c:3614
 [<ffffffff810e020b>] __do_page_fault+0x4eb/0xbd0 arch/x86/mm/fault.c:1397
 [<ffffffff810e0917>] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1460
 [<ffffffff838ad798>] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012
 [<ffffffff838ac5c5>] entry_SYSCALL_64_fastpath+0x23/0xc6
FAULT_FLAG_ALLOW_RETRY missing 30
CPU: 1 PID: 21662 Comm: syz-executor1 Tainted: G    B           4.9.52-gc30c69c #54
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801a79479a0 ffffffff81d93149 ffff8801a7947c80 0000000000000000
 ffff8801ad31e710 ffff8801a7947b70 ffff8801ad31e600 ffff8801a7947b98
 ffffffff81660dc8 ffff8801a7947af0 ffff8801cbff07f8 00000001a82b0067
Call Trace:
 [<ffffffff81d93149>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d93149>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81660dc8>] handle_userfault+0xa48/0x1300 fs/userfaultfd.c:323
 [<ffffffff814cfd71>] do_anonymous_page mm/memory.c:2747 [inline]
 [<ffffffff814cfd71>] handle_pte_fault mm/memory.c:3488 [inline]
 [<ffffffff814cfd71>] __handle_mm_fault mm/memory.c:3577 [inline]
 [<ffffffff814cfd71>] handle_mm_fault+0x1fd1/0x2530 mm/memory.c:3614
 [<ffffffff810e020b>] __do_page_fault+0x4eb/0xbd0 arch/x86/mm/fault.c:1397
 [<ffffffff810e0917>] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1460
 [<ffffffff838ad798>] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012
 [<ffffffff838ac5c5>] entry_SYSCALL_64_fastpath+0x23/0xc6
FAULT_FLAG_ALLOW_RETRY missing 30
CPU: 1 PID: 21674 Comm: syz-executor1 Tainted: G    B           4.9.52-gc30c69c #54
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801d91779a0 ffffffff81d93149 ffff8801d9177c80 0000000000000000
 ffff8801ad31f310 ffff8801d9177b70 ffff8801ad31f200 ffff8801d9177b98
 ffffffff81660dc8 ffff8801d9177af0 ffff8801d9177bb8 00000001a82b0067
Call Trace:
 [<ffffffff81d93149>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d93149>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81660dc8>] handle_userfault+0xa48/0x1300 fs/userfaultfd.c:323
 [<ffffffff814cfd71>] do_anonymous_page mm/memory.c:2747 [inline]
 [<ffffffff814cfd71>] handle_pte_fault mm/memory.c:3488 [inline]
 [<ffffffff814cfd71>] __handle_mm_fault mm/memory.c:3577 [inline]
 [<ffffffff814cfd71>] handle_mm_fault+0x1fd1/0x2530 mm/memory.c:3614
 [<ffffffff810e020b>] __do_page_fault+0x4eb/0xbd0 arch/x86/mm/fault.c:1397
 [<ffffffff810e0917>] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1460
 [<ffffffff838ad798>] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012
 [<ffffffff838ac5c5>] entry_SYSCALL_64_fastpath+0x23/0xc6
FAULT_FLAG_ALLOW_RETRY missing 30
CPU: 1 PID: 21662 Comm: syz-executor1 Tainted: G    B           4.9.52-gc30c69c #54
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801a79479a0 ffffffff81d93149 ffff8801a7947c80 0000000000000000
 ffff8801ad31f310 ffff8801a7947b70 ffff8801ad31f200 ffff8801a7947b98
 ffffffff81660dc8 ffff8801a7947af0 ffff8801a7947bb8 00000001a82b0067
Call Trace:
 [<ffffffff81d93149>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d93149>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81660dc8>] handle_userfault+0xa48/0x1300 fs/userfaultfd.c:323
 [<ffffffff814cfd71>] do_anonymous_page mm/memory.c:2747 [inline]
 [<ffffffff814cfd71>] handle_pte_fault mm/memory.c:3488 [inline]
 [<ffffffff814cfd71>] __handle_mm_fault mm/memory.c:3577 [inline]
 [<ffffffff814cfd71>] handle_mm_fault+0x1fd1/0x2530 mm/memory.c:3614
 [<ffffffff810e020b>] __do_page_fault+0x4eb/0xbd0 arch/x86/mm/fault.c:1397
 [<ffffffff810e0917>] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1460
 [<ffffffff838ad798>] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012
 [<ffffffff838ac5c5>] entry_SYSCALL_64_fastpath+0x23/0xc6
binder: 21710:21711 ioctl 560a 20183ff4 returned -22
binder: 21710:21711 ioctl 8910 20a39ff0 returned -22
binder: 21710:21711 ioctl c020aa00 204b4fe0 returned -22
binder: 21710:21727 ioctl 560a 20183ff4 returned -22
binder: 21710:21752 ioctl 8910 20a39ff0 returned -22
binder: 21710:21752 ioctl c020aa00 204b4fe0 returned -22
FAULT_FLAG_ALLOW_RETRY missing 30
CPU: 1 PID: 21773 Comm: syz-executor0 Tainted: G    B           4.9.52-gc30c69c #54
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801ca2b75b0 ffffffff81d93149 ffff8801ca2b7890 0000000000000000
 ffff8801ad31eb90 ffff8801ca2b7780 ffff8801ad31ea80 ffff8801ca2b77a8
 ffffffff81660dc8 ffff8801ca2b7700 0000000000000000 00000001cdd52067
Call Trace:
 [<ffffffff81d93149>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d93149>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81660dc8>] handle_userfault+0xa48/0x1300 fs/userfaultfd.c:323
 [<ffffffff814cfd71>] do_anonymous_page mm/memory.c:2747 [inline]
 [<ffffffff814cfd71>] handle_pte_fault mm/memory.c:3488 [inline]
 [<ffffffff814cfd71>] __handle_mm_fault mm/memory.c:3577 [inline]
 [<ffffffff814cfd71>] handle_mm_fault+0x1fd1/0x2530 mm/memory.c:3614
 [<ffffffff810e020b>] __do_page_fault+0x4eb/0xbd0 arch/x86/mm/fault.c:1397
 [<ffffffff810e0917>] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1460
 [<ffffffff838ad798>] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012
 [<ffffffff8320bc1a>] ip_setsockopt+0x3a/0xb0 net/ipv4/ip_sockglue.c:1235
 [<ffffffff832b8825>] udp_setsockopt+0x45/0x80 net/ipv4/udp.c:2086
 [<ffffffff82ed6245>] sock_common_setsockopt+0x95/0xd0 net/core/sock.c:2705
 [<ffffffff82ed31e0>] SYSC_setsockopt net/socket.c:1771 [inline]
 [<ffffffff82ed31e0>] SyS_setsockopt+0x160/0x250 net/socket.c:1750
 [<ffffffff838ac5c5>] entry_SYSCALL_64_fastpath+0x23/0xc6
FAULT_FLAG_ALLOW_RETRY missing 30
CPU: 1 PID: 21755 Comm: syz-executor0 Tainted: G    B           4.9.52-gc30c69c #54
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801cf97f6d0 ffffffff81d93149 ffff8801cf97f9b0 0000000000000000
 ffff8801ad31eb90 ffff8801cf97f8a0 ffff8801ad31ea80 ffff8801cf97f8c8
 ffffffff81660dc8 ffff8801cf97f820 ffffffff84649140 00000001cdd52067
Call Trace:
 [<ffffffff81d93149>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d93149>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81660dc8>] handle_userfault+0xa48/0x1300 fs/userfaultfd.c:323
 [<ffffffff814cfd71>] do_anonymous_page mm/memory.c:2747 [inline]
 [<ffffffff814cfd71>] handle_pte_fault mm/memory.c:3488 [inline]
 [<ffffffff814cfd71>] __handle_mm_fault mm/memory.c:3577 [inline]
 [<ffffffff814cfd71>] handle_mm_fault+0x1fd1/0x2530 mm/memory.c:3614
 [<ffffffff810e020b>] __do_page_fault+0x4eb/0xbd0 arch/x86/mm/fault.c:1397
 [<ffffffff810e0917>] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1460
 [<ffffffff838ad798>] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012
 [<ffffffff832e3689>] inet_ioctl+0x89/0x1c0 net/ipv4/af_inet.c:878
 [<ffffffff82ec9ef5>] sock_do_ioctl+0x65/0xb0 net/socket.c:892
 [<ffffffff82eca940>] sock_ioctl+0x2e0/0x3d0 net/socket.c:978
 [<ffffffff815ace0a>] vfs_ioctl fs/ioctl.c:43 [inline]
 [<ffffffff815ace0a>] do_vfs_ioctl+0x1aa/0x10c0 fs/ioctl.c:679
 [<ffffffff815addaf>] SYSC_ioctl fs/ioctl.c:694 [inline]
 [<ffffffff815addaf>] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:685
 [<ffffffff838ac5c5>] entry_SYSCALL_64_fastpath+0x23/0xc6
FAULT_FLAG_ALLOW_RETRY missing 30
CPU: 0 PID: 21766 Comm: syz-executor0 Tainted: G    B           4.9.52-gc30c69c #54
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801d8aefa00 ffffffff81d93149 ffff8801d8aefce0 0000000000000000
 ffff8801ad31eb90 ffff8801d8aefbd0 ffff8801ad31ea80 ffff8801d8aefbf8
 ffffffff81660dc8 ffff8801d8aefb50 0000000041b58ab3 00000001cdd52067
Call Trace:
 [<ffffffff81d93149>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d93149>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81660dc8>] handle_userfault+0xa48/0x1300 fs/userfaultfd.c:323
 [<ffffffff814cfd71>] do_anonymous_page mm/memory.c:2747 [inline]
 [<ffffffff814cfd71>] handle_pte_fault mm/memory.c:3488 [inline]
 [<ffffffff814cfd71>] __handle_mm_fault mm/memory.c:3577 [inline]
 [<ffffffff814cfd71>] handle_mm_fault+0x1fd1/0x2530 mm/memory.c:3614
 [<ffffffff810e020b>] __do_page_fault+0x4eb/0xbd0 arch/x86/mm/fault.c:1397
 [<ffffffff810e0917>] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1460
 [<ffffffff838ad798>] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012
 [<ffffffff838ac5c5>] entry_SYSCALL_64_fastpath+0x23/0xc6
FAULT_FLAG_ALLOW_RETRY missing 30
CPU: 1 PID: 21777 Comm: syz-executor3 Tainted: G    B           4.9.52-gc30c69c #54
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801ca9a79b0 ffffffff81d93149 ffff8801ca9a7c90 0000000000000000
 ffff8801ad31f010 ffff8801ca9a7b80 ffff8801ad31ef00 ffff8801ca9a7ba8
 ffffffff81660dc8 ffff8801ca9a7b00 ffffffff811c9fc7 00000001acc82067
Call Trace:
 [<ffffffff81d93149>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d93149>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81660dc8>] handle_userfault+0xa48/0x1300 fs/userfaultfd.c:323
 [<ffffffff814cfd71>] do_anonymous_page mm/memory.c:2747 [inline]
 [<ffffffff814cfd71>] handle_pte_fault mm/memory.c:3488 [inline]
 [<ffffffff814cfd71>] __handle_mm_fault mm/memory.c:3577 [inline]
 [<ffffffff814cfd71>] handle_mm_fault+0x1fd1/0x2530 mm/memory.c:3614
 [<ffffffff810e020b>] __do_page_fault+0x4eb/0xbd0 arch/x86/mm/fault.c:1397
 [<ffffffff810e0917>] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1460
 [<ffffffff838ad798>] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012
 [<ffffffff838ac5c5>] entry_SYSCALL_64_fastpath+0x23/0xc6
nla_parse: 5 callbacks suppressed
netlink: 4 bytes leftover after parsing attributes in process `syz-executor3'.
netlink: 4 bytes leftover after parsing attributes in process `syz-executor3'.
device lo entered promiscuous mode
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=11370 sclass=netlink_route_socket pig=21844 comm=syz-executor5
device lo left promiscuous mode
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=21857 comm=syz-executor5
netlink: 3 bytes leftover after parsing attributes in process `syz-executor2'.
netlink: 1 bytes leftover after parsing attributes in process `syz-executor5'.
netlink: 1 bytes leftover after parsing attributes in process `syz-executor5'.
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=14606 sclass=netlink_route_socket pig=22145 comm=syz-executor4
netlink: 1 bytes leftover after parsing attributes in process `syz-executor4'.
netlink: 72 bytes leftover after parsing attributes in process `syz-executor7'.
netlink: 72 bytes leftover after parsing attributes in process `syz-executor7'.
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=14606 sclass=netlink_route_socket pig=22145 comm=syz-executor4
netlink: 1 bytes leftover after parsing attributes in process `syz-executor4'.
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=44652 sclass=netlink_route_socket pig=22235 comm=syz-executor5
sg_write: data in/out 34319/34 bytes for SCSI command 0xfc-- guessing data in;
   program syz-executor4 not setting count and/or reply_len properly
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=44652 sclass=netlink_route_socket pig=22235 comm=syz-executor5
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Dumping ftrace buffer:
FAULT_FLAG_ALLOW_RETRY missing 30
CPU: 0 PID: 22262 Comm: syz-executor0 Tainted: G    B           4.9.52-gc30c69c #54
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801d5f6f740 ffffffff81d93149 ffff8801d5f6fa20 0000000000000000
 ffff8801a9e90e90 ffff8801d5f6f910 ffff8801a9e90d80 ffff8801d5f6f938
 ffffffff81660dc8 ffff8801d5f6f890 ffff8801d5f6f810 00000001d89ae067
Call Trace:
 [<ffffffff81d93149>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d93149>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81660dc8>] handle_userfault+0xa48/0x1300 fs/userfaultfd.c:323
 [<ffffffff814cfd71>] do_anonymous_page mm/memory.c:2747 [inline]
 [<ffffffff814cfd71>] handle_pte_fault mm/memory.c:3488 [inline]
 [<ffffffff814cfd71>] __handle_mm_fault mm/memory.c:3577 [inline]
 [<ffffffff814cfd71>] handle_mm_fault+0x1fd1/0x2530 mm/memory.c:3614
 [<ffffffff810e020b>] __do_page_fault+0x4eb/0xbd0 arch/x86/mm/fault.c:1397
 [<ffffffff810e0917>] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1460
 [<ffffffff838ad798>] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012
 [<ffffffff815ace0a>] vfs_ioctl fs/ioctl.c:43 [inline]
 [<ffffffff815ace0a>] do_vfs_ioctl+0x1aa/0x10c0 fs/ioctl.c:679
 [<ffffffff815addaf>] SYSC_ioctl fs/ioctl.c:694 [inline]
 [<ffffffff815addaf>] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:685
 [<ffffffff838ac5c5>] entry_SYSCALL_64_fastpath+0x23/0xc6
FAULT_FLAG_ALLOW_RETRY missing 30
CPU: 0 PID: 22250 Comm: syz-executor0 Tainted: G    B           4.9.52-gc30c69c #54
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801d1bb78e0 ffffffff81d93149 ffff8801d1bb7bc0 0000000000000000
 ffff8801a9e90e90 ffff8801d1bb7ab0 ffff8801a9e90d80 ffff8801d1bb7ad8
 ffffffff81660dc8 ffff8801d1bb7a30 ffffffff812dce90 00000001d89ae067
Call Trace:
 [<ffffffff81d93149>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d93149>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81660dc8>] handle_userfault+0xa48/0x1300 fs/userfaultfd.c:323
 [<ffffffff814cfd71>] do_anonymous_page mm/memory.c:2747 [inline]
 [<ffffffff814cfd71>] handle_pte_fault mm/memory.c:3488 [inline]
 [<ffffffff814cfd71>] __handle_mm_fault mm/memory.c:3577 [inline]
 [<ffffffff814cfd71>] handle_mm_fault+0x1fd1/0x2530 mm/memory.c:3614
 [<ffffffff810e020b>] __do_page_fault+0x4eb/0xbd0 arch/x86/mm/fault.c:1397
 [<ffffffff810e0917>] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1460
 [<ffffffff838ad798>] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012
 [<ffffffff81006527>] do_syscall_64+0x197/0x490 arch/x86/entry/common.c:280
 [<ffffffff838ac68d>] entry_SYSCALL64_slow_path+0x25/0x25
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 22264 Comm: syz-executor4 Tainted: G    B           4.9.52-gc30c69c #54
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801ccc3e000 task.stack: ffff8801d0ae8000
RIP: 0010:[<ffffffff8144df71>]  [<ffffffff8144df71>] __read_once_size include/linux/compiler.h:243 [inline]
RIP: 0010:[<ffffffff8144df71>]  [<ffffffff8144df71>] atomic_read arch/x86/include/asm/atomic.h:26 [inline]
RIP: 0010:[<ffffffff8144df71>]  [<ffffffff8144df71>] page_ref_count include/linux/page_ref.h:66 [inline]
RIP: 0010:[<ffffffff8144df71>]  [<ffffffff8144df71>] put_page_testzero include/linux/mm.h:445 [inline]
RIP: 0010:[<ffffffff8144df71>]  [<ffffffff8144df71>] __free_pages+0x21/0x80 mm/page_alloc.c:3901
RSP: 0018:ffff8801d0aef9b0  EFLAGS: 00010a07
RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffc90002a6e000
RDX: 1bd5a9d5a0000003 RSI: 0000000000000002 RDI: dead4ead0000001c
RBP: ffff8801d0aef9c0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 1ffff1003a15df18 R12: 0000000000000004
R13: 0000000000000020 R14: ffff8801ac4ec200 R15: dffffc0000000000
FS:  00007fc73557b700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020019000 CR3: 00000001ccd0e000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffff8801ccc3e000 ffff8801ac4ec358 ffff8801d0aefa20 ffffffff82661ed1
 ffff8801ac4ec370 ffffed003589d86b ffffed003589d86e ffff8801ac4ec368
 dead4ead00000000 ffff8801ac4ec340 0000000000000000 0000000000000000
Call Trace:
 [<ffffffff82661ed1>] sg_remove_scat.isra.20+0x1c1/0x2d0 drivers/scsi/sg.c:1954
 [<ffffffff82662295>] sg_finish_rem_req+0x2b5/0x340 drivers/scsi/sg.c:1836
 [<ffffffff82662359>] sg_new_read.isra.21+0x39/0x3e0 drivers/scsi/sg.c:567
 [<ffffffff82663f36>] sg_read+0x8a6/0x1400 drivers/scsi/sg.c:456
 [<ffffffff8156b741>] do_loop_readv_writev.part.17+0x141/0x1e0 fs/read_write.c:714
 [<ffffffff8156f510>] do_loop_readv_writev fs/read_write.c:880 [inline]
 [<ffffffff8156f510>] do_readv_writev+0x520/0x750 fs/read_write.c:874
 [<ffffffff8156f7c4>] vfs_readv+0x84/0xc0 fs/read_write.c:898
 [<ffffffff8156f8e6>] do_readv+0xe6/0x250 fs/read_write.c:924
 [<ffffffff81572ca7>] SYSC_readv fs/read_write.c:1011 [inline]
 [<ffffffff81572ca7>] SyS_readv+0x27/0x30 fs/read_write.c:1008
 [<ffffffff838ac5c5>] entry_SYSCALL_64_fastpath+0x23/0xc6
Code: ff 66 0f 1f 84 00 00 00 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  [<ffffffff8144df71>] __read_once_size include/linux/compiler.h:243 [inline]
RIP  [<ffffffff8144df71>] atomic_read arch/x86/include/asm/atomic.h:26 [inline]
RIP  [<ffffffff8144df71>] page_ref_count include/linux/page_ref.h:66 [inline]
RIP  [<ffffffff8144df71>] put_page_testzero include/linux/mm.h:445 [inline]
RIP  [<ffffffff8144df71>] __free_pages+0x21/0x80 mm/page_alloc.c:3901
 RSP <ffff8801d0aef9b0>
---[ end trace dd30445b92a8bc02 ]---