panic: avl_find() succeeded inside avl_add()

[Allan Jude]

I updated one of our storage servers to the latest -CURRENT yesterday
and now it is panic'ing every few minutes

I suspect this is related to r269229 (MFV r269223)

Jul 31 03:25:23 Tango syslogd: kernel boot file is /boot/kernel/kernel
Jul 31 03:25:23 Tango kernel: panic: avl_find() succeeded inside avl_add()
Jul 31 03:25:23 Tango kernel: cpuid = 0
Jul 31 03:25:23 Tango kernel: KDB: stack backtrace:
Jul 31 03:25:23 Tango kernel: #0 0xffffffff809ab070 at kdb_backtrace+0x60
Jul 31 03:25:23 Tango kernel: #1 0xffffffff8096c3a5 at panic+0x155
Jul 31 03:25:23 Tango kernel: #2 0xffffffff819dbc04 at avl_add+0x84
Jul 31 03:25:23 Tango kernel: #3 0xffffffff81a04560 at dbuf_create+0x390
Jul 31 03:25:23 Tango kernel: #4 0xffffffff81a03f5a at dbuf_hold_impl+0x11a
Jul 31 03:25:23 Tango kernel: #5 0xffffffff81a0467b at dbuf_hold+0x1b
Jul 31 03:25:23 Tango kernel: #6 0xffffffff81a09593 at
dmu_buf_hold_array_by_dnode+0x153
Jul 31 03:25:23 Tango kernel: #7 0xffffffff81a0a526 at dmu_read_uio+0x66
Jul 31 03:25:23 Tango kernel: #8 0xffffffff81a9bb0a at
zfs_freebsd_read+0x58a
Jul 31 03:25:23 Tango kernel: #9 0xffffffff80eddf11 at VOP_READ_APV+0xa1
Jul 31 03:25:23 Tango kernel: #10 0xffffffff80a32427 at vn_read+0x167
Jul 31 03:25:23 Tango kernel: #11 0xffffffff80a2e5db at vn_io_fault+0x10b
Jul 31 03:25:23 Tango kernel: #12 0xffffffff809c4a95 at dofileread+0x95
Jul 31 03:25:23 Tango kernel: #13 0xffffffff809c47b8 at kern_readv+0x68
Jul 31 03:25:23 Tango kernel: #14 0xffffffff809c4743 at sys_read+0x63
Jul 31 03:25:23 Tango kernel: #15 0xffffffff80db84fb at amd64_syscall+0x3fb
Jul 31 03:25:23 Tango kernel: #16 0xffffffff80d9a47b at Xfast_syscall+0xfb
Jul 31 03:25:23 Tango kernel: Uptime: 12m11s

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=192284


-- 
Allan Jude

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