Date: Sun, 18 Jun 2017 03:14:42 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 220094] [scsi] sys/cam/scsi/scsi_sa.c: a sleep-under-mutex bug in saioctl Message-ID: <bug-220094-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D220094 Bug ID: 220094 Summary: [scsi] sys/cam/scsi/scsi_sa.c: a sleep-under-mutex bug in saioctl Product: Base System Version: 11.0-RELEASE Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: freebsd-bugs@FreeBSD.org Reporter: baijiaju1990@163.com The driver may sleep under a mutex, and the function call path in file "sys/cam/scsi/scsi_sa.c" in FreeBSD 11.0 is: saioctl [line 1680: acquire the mutex] saextget [line 1683] malloc(M_WAITOK) [line 4444] --> may sleep The possible fix of this bug is to replace "M_WAITOK" in malloc with "M_NOWAIT". This bug is found by a static analysis tool written by myself, and it is checked by my review of the FreeBSD code. Thanks, Jia-Ju Bai --=20 You are receiving this mail because: You are the assignee for the bug.=
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