#include <asm/unistd.h>
#include <linux/bpf.h>
#include <unistd.h>

#ifndef __NR_bpf
# if defined(__i386__)
#  define __NR_bpf 357
# elif defined(__x86_64__)
#  define __NR_bpf 321
# elif defined(__aarch64__)
#  define __NR_bpf 280
#  error __NR_bpf not defined. libbpf does not support your arch.
# endif
#endif

int main(void)
{
	union bpf_attr attr;

	/* Check fields in attr */
	attr.prog_type = BPF_PROG_TYPE_KPROBE;
	attr.insn_cnt = 0;
	attr.insns = 0;
	attr.license = 0;
	attr.log_buf = 0;
	attr.log_size = 0;
	attr.log_level = 0;
	attr.kern_version = 0;

	/*
	 * Test existence of __NR_bpf and BPF_PROG_LOAD.
	 * This call should fail if we run the testcase.
	 */
	return syscall(__NR_bpf, BPF_PROG_LOAD, &attr, sizeof(attr));
}
png' alt='cgit logo'/></a></td>
<td class='main'><a href='/cgit.cgi/'>index</a> : <a href='/cgit.cgi/linux/net-next.git/'>net-next.git</a></td><td class='form'><form method='get'>
<input type='hidden' name='id' value='08965c2eba135bdfb6e86cf25308e01421c7e0ce'/><select name='h' onchange='this.form.submit();'>
<option value='emaclite-cleanup'>emaclite-cleanup</option>
<option value='master' selected='selected'>master</option>
<option value='nds-private-remove'>nds-private-remove</option>
<option value='packet-loop-back'>packet-loop-back</option>
<option value='packet-rx-pump-back'>packet-rx-pump-back</option>
</select> <input type='submit' value='switch'/></form></td></tr>
<tr><td class='sub'>net-next plumbings</td><td class='sub right'>Tobias Klauser</td></tr></table>
<table class='tabs'><tr><td>
<a href='/cgit.cgi/linux/net-next.git/'>summary</a><a href='/cgit.cgi/linux/net-next.git/refs/?id=08965c2eba135bdfb6e86cf25308e01421c7e0ce'>refs</a><a href='/cgit.cgi/linux/net-next.git/log/drivers/usb/host/ohci-q.c'>log</a><a href='/cgit.cgi/linux/net-next.git/tree/drivers/usb/host/ohci-q.c?id=08965c2eba135bdfb6e86cf25308e01421c7e0ce'>tree</a><a class='active' href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/host/ohci-q.c?id=08965c2eba135bdfb6e86cf25308e01421c7e0ce'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/drivers/usb/host/ohci-q.c?id=08965c2eba135bdfb6e86cf25308e01421c7e0ce'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/drivers/usb/host/ohci-q.c'>
<input type='hidden' name='id' value='08965c2eba135bdfb6e86cf25308e01421c7e0ce'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=08965c2eba135bdfb6e86cf25308e01421c7e0ce'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/drivers?id=08965c2eba135bdfb6e86cf25308e01421c7e0ce'>drivers</a>/<a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb?id=08965c2eba135bdfb6e86cf25308e01421c7e0ce'>usb</a>/<a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/host?id=08965c2eba135bdfb6e86cf25308e01421c7e0ce'>host</a>/<a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/host/ohci-q.c?id=08965c2eba135bdfb6e86cf25308e01421c7e0ce'>ohci-q.c</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='08965c2eba135bdfb6e86cf25308e01421c7e0ce'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Bart Van Assche &lt;bart.vanassche@sandisk.com&gt;</td><td class='right'>2017-01-25 13:43:56 -0800</td></tr>
<tr><th>committer</th><td>Jens Axboe &lt;axboe@fb.com&gt;</td><td class='right'>2017-01-26 10:01:20 -0700</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/host/ohci-q.c?id=08965c2eba135bdfb6e86cf25308e01421c7e0ce'>08965c2eba135bdfb6e86cf25308e01421c7e0ce</a> (<a href='/cgit.cgi/linux/net-next.git/patch/drivers/usb/host/ohci-q.c?id=08965c2eba135bdfb6e86cf25308e01421c7e0ce'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=08965c2eba135bdfb6e86cf25308e01421c7e0ce'>1675b0e264e8a23efe04ea48f44b00c10506f2a6</a> /<a href='/cgit.cgi/linux/net-next.git/tree/drivers/usb/host/ohci-q.c?id=08965c2eba135bdfb6e86cf25308e01421c7e0ce'>drivers/usb/host/ohci-q.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/host/ohci-q.c?id=0d4ee015d5ea50febb882d00520d62c6de3f725c'>0d4ee015d5ea50febb882d00520d62c6de3f725c</a> (<a href='/cgit.cgi/linux/net-next.git/diff/drivers/usb/host/ohci-q.c?id=08965c2eba135bdfb6e86cf25308e01421c7e0ce&amp;id2=0d4ee015d5ea50febb882d00520d62c6de3f725c'>diff</a>)</td></tr></table>
<div class='commit-subject'>Revert "sd: remove __data_len hack for WRITE SAME"</div><div class='commit-msg'>This patch reverts commit f80de881d8df and avoids that sending a
WRITE SAME command to the iSCSI initiator triggers the following:

BUG: unable to handle kernel NULL pointer dereference at 0000000000000014
TARGET_CORE[iSCSI]: Expected Transfer Length: 260096 does not match SCSI CDB Length: 512 for SAM Opcode: 0x41
IP: iscsi_tcp_segment_done+0x20b/0x310 [libiscsi_tcp]

Oops: 0000 [#1] SMP
Modules linked in: target_core_user uio target_core_iblock target_core_file iscsi_target_mod target_core_mod netconsole configfs crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 crypto_simd cryptd glue_helper virtio_console virtio_rng virtio_balloon serio_raw i2c_piix4 acpi_cpufreq button iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ext4 jbd2 mbcache virtio_blk virtio_net psmouse floppy drm_kms_helper syscopyarea
sysfillrect sysimgblt fb_sys_fops ttm drm virtio_pci
CPU: 2 PID: 5 Comm: kworker/u8:0 Not tainted 4.10.0-rc5-debug+ #3
Workqueue: iscsi_q_0 iscsi_xmitworker [libiscsi]
RIP: 0010:iscsi_tcp_segment_done+0x20b/0x310 [libiscsi_tcp]
Call Trace:
 iscsi_sw_tcp_xmit_segment+0x84/0x120 [iscsi_tcp]
 iscsi_sw_tcp_pdu_xmit+0x51/0x180 [iscsi_tcp]
 iscsi_tcp_task_xmit+0xb3/0x290 [libiscsi_tcp]
 iscsi_xmit_task+0x4e/0xc0 [libiscsi]
 iscsi_xmitworker+0x243/0x330 [libiscsi]
 process_one_work+0x1d8/0x4b0
 worker_thread+0x49/0x4a0
 kthread+0x102/0x140

Fixes: f80de881d8df ("sd: remove __data_len hack for WRITE SAME")
Signed-off-by: Bart Van Assche &lt;bart.vanassche@sandisk.com&gt;
Cc: Hannes Reinecke &lt;hare@suse.com&gt;
Cc: Sagi Grimberg &lt;sagi@grimberg.me&gt;
Cc: Jens Axboe &lt;axboe@fb.com&gt;
Cc: Lee Duncan &lt;lduncan@suse.com&gt;
Cc: Chris Leech &lt;cleech@redhat.com&gt;
Acked-by: Christoph Hellwig &lt;hch@lst.de&gt;
Acked-by: Martin K. Petersen &lt;martin.petersen@oracle.com&gt;
Signed-off-by: Jens Axboe &lt;axboe@fb.com&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=08965c2eba135bdfb6e86cf25308e01421c7e0ce'>Diffstat</a> (limited to 'drivers/usb/host/ohci-q.c')</div><table summary='diffstat' class='diffstat'>