| LOR |
lock order reversal
1st 0xc162e3b4 em0 (network driver) @ sys/dev/em/if_em.c:980
2nd 0xc0663d80 Giant (Giant) @ sys/vm/vm_contig.c:538
KDB: stack backtrace:
kdb_backtrace(c0619e00,c0663d80,c0615a3e,c0615a3e,c06270aa) at kdb_backtrace+0x2e
witness_checkorder(c0663d80,9,c06270aa,21a,d403d964) at witness_checkorder+0x6a6
_mtx_lock_flags(c0663d80,0,c06270aa,21a,c04b9b5f) at _mtx_lock_flags+0x8a
contigmalloc(1000,c063d760,1,0,ffffffff) at contigmalloc+0x42
alloc_bounce_pages(c1737d00,4,101,c18ac100,c162e000) at alloc_bounce_pages+0x83
bus_dmamap_create(c1737d00,1,d403da28,c0672c20,0) at bus_dmamap_create+0x131
em_encap(c162e000,c18ac100,c0609329,267,c162e0e8) at em_encap+0x90
em_start_locked(c162e000,ffffffff,c044cfc0,c162e000,c162e37c) at em_start_locked+0x254
em_intr(c162e000,0,c0613eaa,269,c0663d40) at em_intr+0x143
ithread_loop(c1566400,d403dd48,c0613cce,323,b20684f9) at ithread_loop+0x172
fork_exit(c04b0410,c1566400,d403dd48) at fork_exit+0xc6
fork_trampoline() at fork_trampoline+0x8
--- trap 0x1, eip = 0, esp = 0xd403dd7c, ebp = 0 ---
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