Date: Fri, 02 Apr 2021 14:37:55 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 254721] Swap on ZFS can crash server in high memory usage conditions Message-ID: <bug-254721-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=254721 Bug ID: 254721 Summary: Swap on ZFS can crash server in high memory usage conditions Product: Base System Version: 12.2-STABLE Hardware: Any OS: Any Status: New Severity: Affects Some People Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: dmilith@me.com I have ELK stack on a dedicated i7 server which has 100% memory usage and swap on ZFS (mounted with "zfs create -V 64gb -o org.freebsd:swap=on -o checksum=off -o compression=off -o dedup=off -o sync=disabled -o primarycache=none zroot/swap swapon /dev/zvol/zroot/swap"). With some extreme load cases, my whole machine crashes with dump like: ``` [109840] Fatal trap 12: page fault while in kernel mode [109840] cpuid = 2; apic id = 02 [109840] fault virtual address = 0xde20140520 [109840] fault code = supervisor write data, page not present [109840] instruction pointer = 0x20:0xffffffff811daef7 [109840] stack pointer = 0x28:0xfffffe00005f1850 [109840] frame pointer = 0x28:0xfffffe00005f1870 [109840] code segment = base 0x0, limit 0xfffff, type 0x1b [109840] = DPL 0, pres 1, long 1, def32 0, gran 1 [109840] processor eflags = interrupt enabled, resume, IOPL = 0 [109840] current process = 16 (solthread 0xfffffff) [109840] trap number = 12 [109840] panic: page fault [109840] cpuid = 2 [109840] time = 1611201271 [109840] version = FreeBSD 12.2-RELEASE-HBSD VerKnowSys [109840] KDB: stack backtrace: [109840] #0 0xffffffff80daf88d at kdb_backtrace+0x7d [109840] #1 0xffffffff80d3e98e at vpanic+0x23e [109840] #2 0xffffffff80d3e750 at vpanic+0 [109840] #3 0xffffffff813adce6 at trap_fatal+0x636 [109840] #4 0xffffffff813adf7f at trap_pfault+0x1af [109840] #5 0xffffffff813acdfa at trap+0x7ba [109840] #6 0xffffffff813ae478 at trap_check+0x48 [109840] #7 0xffffffff8137a4d8 at calltrap+0x8 [109840] #8 0xffffffff811dfa82 at bucket_cache_drain+0x52 [109840] #9 0xffffffff811d64cf at zone_drain_wait+0x12f [109840] #10 0xffffffff811d639a at zone_drain+0x1a [109840] #11 0xffffffff826a9ba8 at arc_kmem_reap_soon+0x88 [109840] #12 0xffffffff826a608b at arc_reap_cb+0xb [109840] #13 0xffffffff82761eb1 at zthr_procedure+0xc1 [109840] #14 0xffffffff80cd0c69 at fork_exit+0x179 [109840] #15 0xffffffff8137b50e at fork_trampoline+0xe ``` -- You are receiving this mail because: You are the assignee for the bug.home | help
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