2009/6/1 Felix Blyakher <felixb@xxxxxxx>: > > On Jun 1, 2009, at 10:22 AM, Alexander Beregalov wrote: > >> Hi >> >> Assertion failed: *nmap >= 1, file: fs/xfs/xfs_bmap.c, line: 4846 > > Alexander, what test triggered this assertion? > >> >> ------------[ cut here ]------------ >> kernel BUG at fs/xfs/support/debug.c:109! >> invalid opcode: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC >> last sysfs file: /sys/kernel/uevent_seqnum >> CPU 0 >> Modules linked in: >> Pid: 30665, comm: emerge Not tainted 2.6.30-rc6-00144-g5805977 #1 >> PowerEdge 1950 >> RIP: 0010:[<ffffffff8043abeb>] [<ffffffff8043abeb>] assfail+0x2b/0x30 >> RSP: 0018:ffff8800303c1b98 EFLAGS: 00010246 >> RAX: 0000000000000054 RBX: 0000000000000000 RCX: 0000000000000301 >> RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 >> RBP: ffff8800303c1ba8 R08: 0000000000000000 R09: 0000000000000000 >> R10: 0000000000000001 R11: 0000000000000001 R12: 0000000800000000 >> R13: ffff880078c0ccc0 R14: 0000000000000002 R15: ffff88007eb3f000 >> FS: 00007f7e92dbc6f0(0000) GS:ffff880005000000(0000) >> knlGS:0000000000000000 >> CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 >> CR2: 0000000001b0a024 CR3: 0000000074cb0000 CR4: 00000000000006e0 >> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 >> DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 >> Process emerge (pid: 30665, threadinfo ffff8800303c0000, task >> ffff88007e335e10) >> Stack: >> ffff8800051cefa0 00000000780d89a3 ffff8800303c1d88 ffffffff803d6bad >> ffffffff804c9ad8 ffffffff814497f8 ffff880045a72000 ffff880045a72aa8 >> ffffffff81449800 0000000000000000 0000000000000000 00000000780d89a3 >> Call Trace: >> [<ffffffff803d6bad>] xfs_bmapi+0xad/0x1ad0 > > xfs_bmapi() here doesn't make sense at all. > Up to this point the stack backtrace seems to be right. > Strange ... It was Gentoo's `emerge --metadata`. It reads many small files (ebuilds). I am sure it cannot be easily reproduced. It runs fine everyday. I do not have a testcase. I can try to run it forever in loop if you need. -- To unsubscribe from this list: send the line "unsubscribe kernel-testers" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
