user/sven/linux.git/drivers/scsi, branch v3.18.78

scsi: scsi_dh_emc: return success in clariion_std_inquiry()

2017-10-21T15:07:26Z

[ Upstream commit 4d7d39a18b8b81511f0b893b7d2203790bf8a58b ] We accidentally return an uninitialized variable on success. Fixes: b6ff1b14cdf4 ("[SCSI] scsi_dh: Update EMC handler") Signed-off-by: Dan Carpenter Reviewed-by: Hannes Reinecke Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman

scsi: scsi_transport_iscsi: fix the issue that iscsi_if_rx doesn't parse nlmsg properly

2017-10-05T07:35:51Z

commit c88f0e6b06f4092995688211a631bb436125d77b upstream. ChunYu found a kernel crash by syzkaller: [ 651.617875] kasan: CONFIG_KASAN_INLINE enabled [ 651.618217] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 651.618731] general protection fault: 0000 [#1] SMP KASAN [ 651.621543] CPU: 1 PID: 9539 Comm: scsi Not tainted 4.11.0.cov #32 [ 651.621938] Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2011 [ 651.622309] task: ffff880117780000 task.stack: ffff8800a3188000 [ 651.622762] RIP: 0010:skb_release_data+0x26c/0x590 [...] [ 651.627260] Call Trace: [ 651.629156] skb_release_all+0x4f/0x60 [ 651.629450] consume_skb+0x1a5/0x600 [ 651.630705] netlink_unicast+0x505/0x720 [ 651.632345] netlink_sendmsg+0xab2/0xe70 [ 651.633704] sock_sendmsg+0xcf/0x110 [ 651.633942] ___sys_sendmsg+0x833/0x980 [ 651.637117] __sys_sendmsg+0xf3/0x240 [ 651.638820] SyS_sendmsg+0x32/0x50 [ 651.639048] entry_SYSCALL_64_fastpath+0x1f/0xc2 It's caused by skb_shared_info at the end of sk_buff was overwritten by ISCSI_KEVENT_IF_ERROR when parsing nlmsg info from skb in iscsi_if_rx. During the loop if skb->len == nlh->nlmsg_len and both are sizeof(*nlh), ev = nlmsg_data(nlh) will acutally get skb_shinfo(SKB) instead and set a new value to skb_shinfo(SKB)->nr_frags by ev->type. This patch is to fix it by checking nlh->nlmsg_len properly there to avoid over accessing sk_buff. Reported-by: ChunYu Wang Signed-off-by: Xin Long Acked-by: Chris Leech Signed-off-by: Martin K. Petersen Signed-off-by: Greg Kroah-Hartman

scsi: qla2xxx: Fix an integer overflow in sysfs code

2017-09-27T08:57:20Z

commit e6f77540c067b48dee10f1e33678415bfcc89017 upstream. The value of "size" comes from the user. When we add "start + size" it could lead to an integer overflow bug. It means we vmalloc() a lot more memory than we had intended. I believe that on 64 bit systems vmalloc() can succeed even if we ask it to allocate huge 4GB buffers. So we would get memory corruption and likely a crash when we call ha->isp_ops->write_optrom() and ->read_optrom(). Only root can trigger this bug. Link: https://bugzilla.kernel.org/show_bug.cgi?id=194061 Fixes: b7cc176c9eb3 ("[SCSI] qla2xxx: Allow region-based flash-part accesses.") Reported-by: shqking Signed-off-by: Dan Carpenter Signed-off-by: Martin K. Petersen Signed-off-by: Greg Kroah-Hartman

scsi: sg: fixup infoleak when using SG_GET_REQUEST_TABLE

2017-09-27T08:57:20Z

commit 3e0097499839e0fe3af380410eababe5a47c4cf9 upstream. When calling SG_GET_REQUEST_TABLE ioctl only a half-filled table is returned; the remaining part will then contain stale kernel memory information. This patch zeroes out the entire table to avoid this issue. Signed-off-by: Hannes Reinecke Reviewed-by: Bart Van Assche Reviewed-by: Christoph Hellwig Reviewed-by: Eric Dumazet Signed-off-by: Martin K. Petersen Signed-off-by: Greg Kroah-Hartman

scsi: sg: factor out sg_fill_request_table()

2017-09-27T08:57:20Z

commit 4759df905a474d245752c9dc94288e779b8734dd upstream. Factor out sg_fill_request_table() for better readability. [mkp: typos, applied by hand] Signed-off-by: Hannes Reinecke Reviewed-by: Bart Van Assche Reviewed-by: Christoph Hellwig Signed-off-by: Martin K. Petersen Signed-off-by: Greg Kroah-Hartman

scsi: sg: off by one in sg_ioctl()

2017-09-27T08:57:20Z

commit bd46fc406b30d1db1aff8dabaff8d18bb423fdcf upstream. If "val" is SG_MAX_QUEUE then we are one element beyond the end of the "rinfo" array so the > should be >=. Fixes: 109bade9c625 ("scsi: sg: use standard lists for sg_requests") Signed-off-by: Dan Carpenter Acked-by: Douglas Gilbert Signed-off-by: Martin K. Petersen Signed-off-by: Greg Kroah-Hartman

scsi: sg: use standard lists for sg_requests

2017-09-27T08:57:20Z

commit 109bade9c625c89bb5ea753aaa1a0a97e6fbb548 upstream. 'Sg_request' is using a private list implementation; convert it to standard lists. Signed-off-by: Hannes Reinecke Reviewed-by: Johannes Thumshirn Tested-by: Johannes Thumshirn Reviewed-by: Christoph Hellwig Signed-off-by: Martin K. Petersen Signed-off-by: Greg Kroah-Hartman

scsi: sg: remove 'save_scat_len'

2017-09-27T08:57:20Z

commit 136e57bf43dc4babbfb8783abbf707d483cacbe3 upstream. Unused. Signed-off-by: Hannes Reinecke Reviewed-by: Johannes Thumshirn Tested-by: Johannes Thumshirn Reviewed-by: Christoph Hellwig Signed-off-by: Martin K. Petersen Signed-off-by: Greg Kroah-Hartman

scsi: sg: recheck MMAP_IO request length with lock held

2017-09-13T21:03:46Z

commit 8d26f491116feaa0b16de370b6a7ba40a40fa0b4 upstream. Commit 1bc0eb044615 ("scsi: sg: protect accesses to 'reserved' page array") adds needed concurrency protection for the "reserve" buffer. Some checks that are initially made outside the lock are replicated once the lock is taken to ensure the checks and resulting decisions are made using consistent state. The check that a request with flag SG_FLAG_MMAP_IO set fits in the reserve buffer also needs to be performed again under the lock to ensure the reserve buffer length compared against matches the value in effect when the request is linked to the reserve buffer. An -ENOMEM should be returned in this case, instead of switching over to an indirect buffer as for non-MMAP_IO requests. Signed-off-by: Todd Poynor Acked-by: Douglas Gilbert Signed-off-by: Martin K. Petersen Signed-off-by: Greg Kroah-Hartman

scsi: sg: protect against races between mmap() and SG_SET_RESERVED_SIZE

2017-09-13T21:03:46Z

commit 6a8dadcca81fceff9976e8828cceb072873b7bd5 upstream. Take f_mutex around mmap() processing to protect against races with the SG_SET_RESERVED_SIZE ioctl. Ensure the reserve buffer length remains consistent during the mapping operation, and set the "mmap called" flag to prevent further changes to the reserved buffer size as an atomic operation with the mapping. [mkp: fixed whitespace] Signed-off-by: Todd Poynor Acked-by: Douglas Gilbert Signed-off-by: Martin K. Petersen Signed-off-by: Greg Kroah-Hartman