Date: Fri, 5 Nov 2010 00:49:12 +0800 (CST) From: Kuang-che Wu <kcwu@csie.org> To: FreeBSD-gnats-submit@FreeBSD.org Subject: kern/151942: panic during ls(1) zfs snapshot directory Message-ID: <201011041649.oA4GnCLJ003031@kcwu.csie.org> Resent-Message-ID: <201011041710.oA4HA6eQ083611@freefall.freebsd.org>
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>Number: 151942 >Category: kern >Synopsis: panic during ls(1) zfs snapshot directory >Confidential: no >Severity: critical >Priority: high >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Thu Nov 04 17:10:05 UTC 2010 >Closed-Date: >Last-Modified: >Originator: Kuang-che Wu >Release: FreeBSD 9.0-CURRENT amd64 >Organization: >Environment: System: FreeBSD kcwu.csie.org 9.0-CURRENT FreeBSD 9.0-CURRENT #0: Sun Oct 17 05:01:33 CST 2010 root@kcwu.csie.org:/usr/obj/amd64.amd64/usr/src/sys/DESKTOP amd64 >Description: zdata is zpool v15, zfs v4 $ zpool status -v pool: zdata state: ONLINE scrub: none requested config: NAME STATE READ WRITE CKSUM zdata ONLINE 0 0 0 raidz1 ONLINE 0 0 0 ad6p4 ONLINE 0 0 0 ad8p4 ONLINE 0 0 0 ad10p4 ONLINE 0 0 0 cache ad14 ONLINE 0 0 0 $ zfs list NAME USED AVAIL REFER MOUNTPOINT zdata 798G 1.87T 31.3G /zdata zdata/backup 138G 1.87T 138G /zdata/backup zdata/files 149G 1.87T 149G /zdata/files zdata/home 61.4G 1.87T 25.0G /home zdata/home/kcwu 33.6G 1.87T 26.1G /home/kcwu zdata/foo 417G 1.87T 114G /zdata/foo zdata/foo/barrrr 117G 1.87T 101G /zdata/foo/barrrr zdata/foo/barr 131G 1.87T 129G /zdata/foo/barr zdata/foo/bar 55.9G 1.87T 50.8G /zdata/foo/bar $ zfs list -t all -r zdata/foo NAME USED AVAIL REFER MOUNTPOINT zdata/foo 417G 1.87T 114G /zdata/foo zdata/foo/barrrr 117G 1.87T 101G /zdata/foo/barrrr zdata/foo/barrrr@2010-10-31_01.40 6.89G - 104G - zdata/foo/barrrr@2010-10-31_05.30 1.50G - 101G - zdata/foo/barrrr@2010-11-01_23.00 1.97G - 101G - zdata/foo/barrrr@2010-11-01_23.00 272M - 100G - zdata/foo/barrrr@2010-11-02_10.30 503M - 100G - zdata/foo/barrrr@2010-11-03_05.50 449M - 100G - zdata/foo/barrrr@2010-11-04_06.00 0 - 101G - zdata/foo/barr 131G 1.87T 129G /zdata/foo/barr zdata/foo/barr@2010-09-28 2.41G - 128G - zdata/foo/bar 55.9G 1.87T 50.8G /zdata/foo/bar zdata/foo/bar@2010-09-28 5.02G - 48.6G - zdata/foo/bar@2010-11-03_15.30 88.0M - 50.7G - zdata/foo/bar@2010-11-04_13.00 0 - 50.8G - >How-To-Repeat: $ ls /zdata/foo/barrrr/.zfs kernel panic (reproduce rate: 3 times out of 4) Fatal trap 12: page fault while in kernel mode cpuid = 2; apic id = 04 fault virtual address = 0x100 fault code = supervisor read data, page not present instruction pointer = 0x20:0xffffffff80715735 stack pointer = 0x28:0xffffff8072b0e310 frame pointer = 0x28:0xffffff8072b0e330 code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, long 1, def32 0, gran 1 processor eflags = interrupt enabled, resume, IOPL = 0 current process = 45332 (ls) [ thread pid 45332 tid 100320 ] Stopped at VOP_LOCK1_APV+0x35: movq 0x100(%rbx),%rax db> bt Tracing pid 45332 tid 100320 td 0xffffff002775e000 VOP_LOCK1_APV() at VOP_LOCK1_APV+0x35 _vn_lock() at _vn_lock+0x47 gfs_file_create() at gfs_file_create+0x65 gfs_dir_create() at gfs_dir_create+0x16 zfsctl_mknode_shares() at zfsctl_mknode_shares+0x43 gfs_dir_lookup() at gfs_dir_lookup+0x1f6 zfsctl_root_lookup() at zfsctl_root_lookup+0x11f zfsctl_freebsd_root_lookup() at zfsctl_freebsd_root_lookup+0xa4 VOP_LOOKUP_APV() at VOP_LOOKUP_APV+0x40 lookup() at lookup+0x452 namei() at namei+0x53a kern_statat_vnhook() at kern_statat_vnhook+0x8f kern_statat() at kern_statat+0x15 lstat() at lstat+0x2a syscallenter() at syscallenter+0x2cf syscall() at syscall+0x4b Xfast_syscall() at Xfast_syscall+0xe2 --- syscall (190, FreeBSD ELF64, lstat), rip = 0x8009941fc, rsp = 0x7fffffffdc38, rbp = 0x800d7a590 --- This is very similar to pr kern/150544. However, my kernel is -current 2010/10/17 which is already including the patches from kern/150544. >Fix: >Release-Note: >Audit-Trail: >Unformatted:
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