Date: Tue, 02 Aug 2022 06:30:09 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 265569] [panic] Fatal trap 9: general protection fault while in kernel mode arc_reap Message-ID: <bug-265569-227-J2QuX5GveY@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-265569-227@https.bugs.freebsd.org/bugzilla/> References: <bug-265569-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D265569 --- Comment #1 from Charlie Stanley <postmaster@willardstanley.com> --- I was doing some more debugging and the call chain looks sane until the slab address is computed. The slab pointer seems to be at an odd offset, and whe= n I dereference it, the data looks like garbage to my limited understanding. (kgdb) frame 8 #8 zone_release (arg=3D0xfffffe015a7c8000, bucket=3D0xfffff80f4784e410, cnt=3D<optimized out>) at /usr/src/sys/vm/uma_core.c:4730 4730 slab_free_item(zone, slab, item); (kgdb) print zone $19 =3D (uma_zone_t) 0xfffffe015a7c8000 (kgdb) print slab $20 =3D (uma_slab_t) 0xfffff80e00000158 (kgdb) print *zone $21 =3D {uz_flags =3D 10551296, uz_size =3D 4096, uz_ctor =3D 0x0, uz_dtor = =3D 0x0, uz_smr =3D 0x0, uz_max_items =3D 0, uz_bucket_max =3D 18446744073709551615, uz_bucket_size =3D 80, uz_bucket_size_max =3D 254, uz_sleepers =3D 0, uz_xd= omain =3D 0xfffffe01d3cb4590, uz_keg =3D 0xfffff80005f13a80,=20 uz_import =3D 0xffffffff80f4a370 <zone_import>, uz_release =3D 0xffffffff= 80f465e0 <zone_release>, uz_arg =3D 0xfffffe015a7c8000, uz_init =3D 0x0, uz_fini =3D= 0x0, uz_items =3D 0, uz_sleeps =3D 0, uz_link =3D {le_next =3D 0x0, le_prev =3D 0xfffff80005f13a90}, uz_allocs =3D 0xfffffe01d3cb45a8,=20 uz_frees =3D 0xfffffe01d3cb45a0, uz_fails =3D 0xfffffe01d3cb4598, uz_name= =3D 0xfffff80005f0a180 "abd_chunk", uz_ctlname =3D 0xfffff80005f18de0 "abd_chun= k", uz_namecnt =3D 0, uz_bucket_size_min =3D 2, uz_reclaimers =3D 1, uz_oid =3D 0xfffff80005f07b80, uz_warning =3D 0x0, uz_ratecheck =3D { tv_sec =3D 0, tv_usec =3D 0}, uz_maxaction =3D {ta_link =3D {stqe_next = =3D 0x0}, ta_pending =3D 0, ta_priority =3D 0 '\000', ta_flags =3D 0 '\000', ta_func = =3D 0x0, ta_context =3D 0x0}, uz_cross_lock =3D {lock_object =3D {lo_name =3D 0xffff= ffff812a0598 "UMA Cross", lo_flags =3D 16973824,=20 lo_data =3D 0, lo_witness =3D 0x0}, mtx_lock =3D 0}, uz_cpu =3D 0xfffffe015a7c8180} (kgdb) print *slab $22 =3D {us_link =3D {le_next =3D 0xda39576285989539, le_prev =3D 0x732ca6f= 15f8ff3dc}, us_freecount =3D 4147, us_flags =3D 27 '\033', us_domain =3D 120 'x', us_fr= ee =3D {__bits =3D 0xfffff80e00000170}} --=20 You are receiving this mail because: You are the assignee for the bug.=
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