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authorVegard Nossum <vegard.nossum@oracle.com>2015-12-16 21:59:56 +0100
committerRichard Weinberger <richard@nod.at>2016-01-10 21:49:47 +0100
commit9f2dfda2f2f1c6181c3732c16b85c59ab2d195e0 (patch)
tree4e8005a6515034c0aa0407343e69ce4af9311920 /net/ipv4/xfrm4_output.c
parent74bf8efb5fa6e958d2d7c7917b8bb672085ec0c6 (diff)
uml: fix hostfs mknod()
An inverted return value check in hostfs_mknod() caused the function to return success after handling it as an error (and cleaning up). It resulted in the following segfault when trying to bind() a named unix socket: Pid: 198, comm: a.out Not tainted 4.4.0-rc4 RIP: 0033:[<0000000061077df6>] RSP: 00000000daae5d60 EFLAGS: 00010202 RAX: 0000000000000000 RBX: 000000006092a460 RCX: 00000000dfc54208 RDX: 0000000061073ef1 RSI: 0000000000000070 RDI: 00000000e027d600 RBP: 00000000daae5de0 R08: 00000000da980ac0 R09: 0000000000000000 R10: 0000000000000003 R11: 00007fb1ae08f72a R12: 0000000000000000 R13: 000000006092a460 R14: 00000000daaa97c0 R15: 00000000daaa9a88 Kernel panic - not syncing: Kernel mode fault at addr 0x40, ip 0x61077df6 CPU: 0 PID: 198 Comm: a.out Not tainted 4.4.0-rc4 #1 Stack: e027d620 dfc54208 0000006f da981398 61bee000 0000c1ed daae5de0 0000006e e027d620 dfcd4208 00000005 6092a460 Call Trace: [<60dedc67>] SyS_bind+0xf7/0x110 [<600587be>] handle_syscall+0x7e/0x80 [<60066ad7>] userspace+0x3e7/0x4e0 [<6006321f>] ? save_registers+0x1f/0x40 [<6006c88e>] ? arch_prctl+0x1be/0x1f0 [<60054985>] fork_handler+0x85/0x90 Let's also get rid of the "cosmic ray protection" while we're at it. Fixes: e9193059b1b3 "hostfs: fix races in dentry_name() and inode_name()" Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com> Cc: Jeff Dike <jdike@addtoit.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: stable@vger.kernel.org Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'net/ipv4/xfrm4_output.c')
0 files changed, 0 insertions, 0 deletions