[Bug 233377] [PowerPC64] Panic during high disk I/O activity

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=233377

--- Comment #6 from Sean Bruno <sbruno at FreeBSD.org> ---
This looks a bit more useful.  


panic: Memory modified after free 0xc00000036e8621a0(32) val=0 @
0xc00000036e8621a0

cpuid = 3
time = 1543128633
KDB: stack backtrace:
0xe00000008ac7cd80: at .kdb_backtrace+0x5c
0xe00000008ac7ceb0: at .vpanic+0x1b4
0xe00000008ac7cf70: at .panic+0x38
0xe00000008ac7d000: at .trash_ctor+0x58
0xe00000008ac7d080: at .uma_zalloc_arg+0x1f0
0xe00000008ac7d140: at .uma_zalloc_pcpu_arg+0x174
0xe00000008ac7d1e0: at .uma_zfree_arg+0x43c
0xe00000008ac7d290: at .free+0xb4
0xe00000008ac7d320: at .zfs_kmem_free+0x18
0xe00000008ac7d3a0: at .zio_data_buf_free+0x90
0xe00000008ac7d430: at .arc_space_return+0x3f0
0xe00000008ac7d4d0: at .arc_loan_compressed_buf+0x590
0xe00000008ac7d570: at .arc_buf_destroy+0x22c
0xe00000008ac7d620: at .dbuf_destroy+0x98
0xe00000008ac7d6d0: at .dbuf_rm_spill+0x260
0xe00000008ac7d760: at .dbuf_rm_spill+0x5b8
0xe00000008ac7d850: at .fork_exit+0xd0
0xe00000008ac7d8f0: at .fork_trampoline+0x10
0xe00000008ac7d920: at -0x4
KDB: enter: panic
[ thread pid 3 tid 100168 ]
Stopped at      .kdb_enter+0x60:        ld      r2, r1, 0x28

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