From: Jiri Slaby <jslaby@suse.cz>
To: Josh Poimboeuf <jpoimboe@redhat.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
x86@kernel.org
Cc: linux-kernel@vger.kernel.org, live-patching@vger.kernel.org,
Michal Marek <mmarek@suse.cz>,
Peter Zijlstra <peterz@infradead.org>,
Andy Lutomirski <luto@kernel.org>, Borislav Petkov <bp@alien8.de>,
Linus Torvalds <torvalds@linux-foundation.org>,
Andi Kleen <andi@firstfloor.org>, Pedro Alves <palves@redhat.com>,
Namhyung Kim <namhyung@gmail.com>,
Bernd Petrovitsch <bernd@petrovitsch.priv.at>,
Chris J Arges <chris.j.arges@canonical.com>,
Andrew Morton <akpm@linux-foundation.org>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
David Vrabel <david.vrabel@citrix.com>,
Borislav Petkov <bp@suse.de>,
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
Boris Ostrovsky <boris.ostrovsky@oracle.com>,
Jeremy Fitzhardinge <jeremy@goop.org>,
Chris Wright <chrisw@sous-sol.org>,
Alok Kataria <akataria@vmware.com>,
Rusty Russell <rusty@rustcorp.com.au>,
Herbert Xu <herbert@gondor.apana.o
Subject: Re: [PATCH 00/33] Compile-time stack metadata validation
Date: Fri, 12 Feb 2016 11:36:24 +0100 [thread overview]
Message-ID: <56BDB5A8.9030006@suse.cz> (raw)
In-Reply-To: <cover.1453405861.git.jpoimboe@redhat.com>
On 01/21/2016, 11:49 PM, Josh Poimboeuf wrote:
> This is v16 of the compile-time stack metadata validation patch set,
> along with proposed fixes for most of the warnings it found. It's based
> on the tip/master branch.
Hi,
with this config:
https://github.com/openSUSE/kernel-source/blob/master/config/x86_64/vanilla
I am seeing a lot of functions in C which do not have frame pointer setup/cleanup:
stacktool: drivers/scsi/hpsa.o: hpsa_scsi_do_simple_cmd.constprop.106()+0x79: call without frame pointer save/setup
stacktool: drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.o: cfs_cdebug_show.part.5.constprop.35()+0x0: frame pointer state mismatch
stacktool: drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.o: cfs_cdebug_show.part.5.constprop.35()+0x8: duplicate frame pointer save
stacktool: drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd_cb.o: cfs_cdebug_show.part.5.constprop.35()+0x9: duplicate frame pointer setup
stacktool: drivers/staging/lustre/lnet/klnds/socklnd/socklnd.o: ksocknal_connsock_decref()+0x0: duplicate frame pointer save
stacktool: drivers/staging/lustre/lnet/klnds/socklnd/socklnd.o: ksocknal_connsock_decref()+0x0: frame pointer state mismatch
stacktool: drivers/staging/lustre/lnet/klnds/socklnd/socklnd.o: ksocknal_connsock_decref()+0x1: duplicate frame pointer setup
stacktool: drivers/staging/lustre/lnet/klnds/socklnd/socklnd.o: .text: unexpected end of section
stacktool: drivers/staging/lustre/lnet/lnet/lib-move.o: cfs_cdebug_show.part.1.constprop.16()+0x0: frame pointer state mismatch
stacktool: drivers/staging/lustre/lnet/lnet/lib-move.o: cfs_cdebug_show.part.1.constprop.16()+0x8: duplicate frame pointer save
stacktool: drivers/staging/lustre/lnet/lnet/lib-move.o: cfs_cdebug_show.part.1.constprop.16()+0x9: duplicate frame pointer setup
stacktool: drivers/staging/lustre/lnet/lnet/lib-move.o: .text: unexpected end of section
stacktool: drivers/staging/lustre/lnet/lnet/lo.o: .text: unexpected end of section
stacktool: drivers/staging/lustre/lnet/lnet/nidstrings.o: cfs_print_nidlist()+0x220: frame pointer state mismatch
stacktool: drivers/staging/lustre/lnet/lnet/peer.o: .text: unexpected end of section
stacktool: drivers/staging/lustre/lnet/lnet/router.o: cfs_cdebug_show.part.0.constprop.16()+0x0: frame pointer state mismatch
stacktool: drivers/staging/lustre/lnet/lnet/router.o: cfs_cdebug_show.part.0.constprop.16()+0x8: duplicate frame pointer save
stacktool: drivers/staging/lustre/lnet/lnet/router.o: cfs_cdebug_show.part.0.constprop.16()+0x9: duplicate frame pointer setup
stacktool: drivers/staging/lustre/lnet/lnet/router.o: lnet_find_net_locked()+0x8a: frame pointer state mismatch
stacktool: drivers/staging/lustre/lnet/lnet/router.o: lnet_find_net_locked()+0x8a: return without frame pointer restore
stacktool: drivers/staging/lustre/lustre/fid/fid_request.o: .text: unexpected end of section
stacktool: drivers/staging/lustre/lustre/fld/lproc_fld.o: .text: unexpected end of section
stacktool: drivers/staging/lustre/lustre/libcfs/libcfs_lock.o: .text: unexpected end of section
stacktool: drivers/staging/lustre/lustre/libcfs/libcfs_mem.o: .text: unexpected end of section
stacktool: drivers/staging/lustre/lustre/llite/dir.o: obd_unpackmd()+0x0: duplicate frame pointer save
stacktool: drivers/staging/lustre/lustre/llite/dir.o: obd_unpackmd()+0x0: frame pointer state mismatch
stacktool: drivers/staging/lustre/lustre/llite/dir.o: obd_unpackmd()+0x4: duplicate frame pointer setup
stacktool: drivers/staging/lustre/lustre/llite/file.o: md_intent_lock.part.28()+0x0: duplicate frame pointer save
stacktool: drivers/staging/lustre/lustre/llite/file.o: md_intent_lock.part.28()+0x0: frame pointer state mismatch
stacktool: drivers/staging/lustre/lustre/llite/file.o: md_intent_lock.part.28()+0x24: duplicate frame pointer setup
stacktool: drivers/staging/lustre/lustre/llite/../lclient/glimpse.o: cl_io_get()+0x0: frame pointer state mismatch
stacktool: drivers/staging/lustre/lustre/llite/../lclient/glimpse.o: cl_io_get()+0x1a: duplicate frame pointer save
stacktool: drivers/staging/lustre/lustre/llite/../lclient/glimpse.o: cl_io_get()+0x1b: duplicate frame pointer setup
stacktool: drivers/staging/lustre/lustre/llite/../lclient/glimpse.o: cl_io_get()+0x19: return without frame pointer restore
stacktool: drivers/staging/lustre/lustre/llite/../lclient/lcommon_misc.o: .text: unexpected end of section
stacktool: drivers/staging/lustre/lustre/llite/llite_mmap.o: .text: unexpected end of section
stacktool: drivers/staging/lustre/lustre/llite/lproc_llite.o: checksum_pages_store()+0x19e: frame pointer state mismatch
stacktool: drivers/staging/lustre/lustre/llite/namei.o: ll_test_inode()+0x0: frame pointer state mismatch
stacktool: drivers/staging/lustre/lustre/llite/namei.o: ll_test_inode()+0x5: duplicate frame pointer save
stacktool: drivers/staging/lustre/lustre/llite/namei.o: ll_test_inode()+0x9: duplicate frame pointer setup
stacktool: drivers/staging/lustre/lustre/llite/rw.o: .text: unexpected end of section
stacktool: drivers/staging/lustre/lustre/llite/statahead.o: md_revalidate_lock.part.26()+0x0: duplicate frame pointer save
stacktool: drivers/staging/lustre/lustre/llite/statahead.o: md_revalidate_lock.part.26()+0x0: frame pointer state mismatch
stacktool: drivers/staging/lustre/lustre/llite/statahead.o: md_revalidate_lock.part.26()+0x24: duplicate frame pointer setup
stacktool: drivers/staging/lustre/lustre/llite/statahead.o: sa_args_fini()+0x0: frame pointer state mismatch
stacktool: drivers/staging/lustre/lustre/llite/statahead.o: sa_args_fini()+0x5: duplicate frame pointer save
stacktool: drivers/staging/lustre/lustre/llite/statahead.o: sa_args_fini()+0x9: duplicate frame pointer setup
stacktool: drivers/staging/lustre/lustre/llite/statahead.o: .text: unexpected end of section
stacktool: drivers/staging/lustre/lustre/llite/vvp_page.o: .text: unexpected end of section
stacktool: drivers/staging/lustre/lustre/llite/xattr_cache.o: .text: unexpected end of section
stacktool: drivers/staging/lustre/lustre/llite/xattr.o: get_xattr_type()+0x0: frame pointer state mismatch
stacktool: drivers/staging/lustre/lustre/llite/xattr.o: get_xattr_type()+0x1f: duplicate frame pointer setup
stacktool: drivers/staging/lustre/lustre/llite/xattr.o: get_xattr_type()+0x5: duplicate frame pointer save
stacktool: drivers/staging/lustre/lustre/lmv/lmv_intent.o: .text: unexpected end of section
stacktool: drivers/staging/lustre/lustre/lmv/lmv_obd.o: __lmv_fid_alloc()+0x185: frame pointer state mismatch
stacktool: drivers/staging/lustre/lustre/lov/lov_io.o: .text: unexpected end of section
stacktool: drivers/staging/lustre/lustre/lov/lovsub_dev.o: .text: unexpected end of section
stacktool: drivers/staging/lustre/lustre/mdc/mdc_lib.o: .text: unexpected end of section
stacktool: drivers/staging/lustre/lustre/mdc/mdc_locks.o: .text.unlikely: unexpected end of section
stacktool: drivers/staging/lustre/lustre/obdclass/debug.o: .text: unexpected end of section
stacktool: drivers/staging/lustre/lustre/obdclass/genops.o: class_name2dev()+0xc7: frame pointer state mismatch
stacktool: drivers/staging/lustre/lustre/obdclass/lustre_handles.o: .text: unexpected end of section
stacktool: drivers/staging/lustre/lustre/obdclass/obd_config.o: lustre_cfg_string()+0x0: duplicate frame pointer save
stacktool: drivers/staging/lustre/lustre/obdclass/obd_config.o: lustre_cfg_string()+0x0: frame pointer state mismatch
stacktool: drivers/staging/lustre/lustre/obdclass/obd_config.o: lustre_cfg_string()+0x4: duplicate frame pointer setup
stacktool: drivers/staging/lustre/lustre/osc/osc_cache.o: __client_obd_list_lock()+0x0: duplicate frame pointer save
stacktool: drivers/staging/lustre/lustre/osc/osc_cache.o: __client_obd_list_lock()+0x0: frame pointer state mismatch
stacktool: drivers/staging/lustre/lustre/osc/osc_cache.o: __client_obd_list_lock()+0x1: duplicate frame pointer setup
stacktool: drivers/staging/lustre/lustre/osc/osc_cache.o: osc_extent_search()+0x78: frame pointer state mismatch
stacktool: drivers/staging/lustre/lustre/osc/osc_cache.o: osc_extent_search()+0x78: return without frame pointer restore
stacktool: drivers/staging/lustre/lustre/osc/osc_dev.o: .text: unexpected end of section
stacktool: drivers/staging/lustre/lustre/osc/osc_page.o: .text: unexpected end of section
stacktool: drivers/staging/lustre/lustre/ptlrpc/connection.o: .text: unexpected end of section
stacktool: drivers/staging/lustre/lustre/ptlrpc/import.o: deuuidify.constprop.8()+0x0: frame pointer state mismatch
stacktool: drivers/staging/lustre/lustre/ptlrpc/import.o: deuuidify.constprop.8()+0x5: duplicate frame pointer save
stacktool: drivers/staging/lustre/lustre/ptlrpc/import.o: deuuidify.constprop.8()+0x6: duplicate frame pointer setup
stacktool: drivers/staging/lustre/lustre/ptlrpc/llog_net.o: .text: unexpected end of section
stacktool: drivers/staging/lustre/lustre/ptlrpc/../../lustre/ldlm/ldlm_extent.o: ldlm_extent_shift_kms()+0x93: frame pointer state mismatch
stacktool: drivers/staging/lustre/lustre/ptlrpc/../../lustre/ldlm/ldlm_lock.o: ldlm_work_bl_ast_lock()+0x156: frame pointer state mismatch
stacktool: drivers/staging/lustre/lustre/ptlrpc/../../lustre/ldlm/ldlm_lock.o: ldlm_work_cp_ast_lock()+0xda: frame pointer state mismatch
stacktool: drivers/staging/lustre/lustre/ptlrpc/nrs.o: nrs_policy_register()+0x0: frame pointer state mismatch
stacktool: drivers/staging/lustre/lustre/ptlrpc/nrs.o: nrs_policy_register()+0x5: duplicate frame pointer save
stacktool: drivers/staging/lustre/lustre/ptlrpc/nrs.o: nrs_policy_register()+0x6: duplicate frame pointer setup
stacktool: drivers/staging/lustre/lustre/ptlrpc/nrs.o: .text: unexpected end of section
stacktool: drivers/staging/lustre/lustre/ptlrpc/pack_generic.o: lustre_swab_mgs_nidtbl_entry()+0x89: frame pointer state mismatch
stacktool: drivers/staging/lustre/lustre/ptlrpc/pack_generic.o: lustre_swab_mgs_nidtbl_entry()+0x89: return without frame pointer restore
stacktool: drivers/staging/lustre/lustre/ptlrpc/sec_bulk.o: .text: unexpected end of section
stacktool: drivers/staging/lustre/lustre/ptlrpc/sec_config.o: .text: unexpected end of section
stacktool: fs/mbcache.o: mb_cache_entry_find_first()+0x70: call without frame pointer save/setup
stacktool: fs/mbcache.o: mb_cache_entry_find_first()+0x92: call without frame pointer save/setup
stacktool: fs/mbcache.o: mb_cache_entry_free()+0xff: call without frame pointer save/setup
stacktool: fs/mbcache.o: mb_cache_entry_free()+0xf5: call without frame pointer save/setup
stacktool: fs/mbcache.o: mb_cache_entry_free()+0x11a: call without frame pointer save/setup
stacktool: fs/mbcache.o: mb_cache_entry_get()+0x225: call without frame pointer save/setup
stacktool: kernel/locking/percpu-rwsem.o: percpu_up_read()+0x27: call without frame pointer save/setup
stacktool: kernel/profile.o: do_profile_hits.isra.5()+0x139: call without frame pointer save/setup
stacktool: lib/nmi_backtrace.o: nmi_trigger_all_cpu_backtrace()+0x2b6: call without frame pointer save/setup
stacktool: net/rds/ib_cm.o: rds_ib_cq_comp_handler_recv()+0x58: call without frame pointer save/setup
stacktool: net/rds/ib_cm.o: rds_ib_cq_comp_handler_send()+0x58: call without frame pointer save/setup
stacktool: net/rds/ib_recv.o: rds_ib_attempt_ack()+0xc1: call without frame pointer save/setup
stacktool: net/rds/iw_recv.o: rds_iw_attempt_ack()+0xc1: call without frame pointer save/setup
stacktool: net/rds/iw_recv.o: rds_iw_recv_cq_comp_handler()+0x55: call without frame pointer save/setup
For example do_profile_hits.isra.5:
0000000000003360 <hpsa_scsi_do_simple_cmd.constprop.106>:
3360: e8 00 00 00 00 callq 3365 <hpsa_scsi_do_simple_cmd.constprop.106+0x5>
3361: R_X86_64_PC32 __fentry__-0x4
3365: 65 ff 05 00 00 00 00 incl %gs:0x0(%rip) # 336c <hpsa_scsi_do_simple_cmd.constprop.106+0xc>
3368: R_X86_64_PC32 __preempt_count-0x4
336c: 65 8b 0d 00 00 00 00 mov %gs:0x0(%rip),%ecx # 3373 <hpsa_scsi_do_simple_cmd.constprop.106+0x13>
336f: R_X86_64_PC32 cpu_number-0x4
3373: 48 63 c9 movslq %ecx,%rcx
3376: 48 8b 87 b8 4b 00 00 mov 0x4bb8(%rdi),%rax
337d: 48 8b 0c cd 00 00 00 mov 0x0(,%rcx,8),%rcx
3384: 00
3381: R_X86_64_32S __per_cpu_offset
3385: 8b 04 01 mov (%rcx,%rax,1),%eax
3388: 65 ff 0d 00 00 00 00 decl %gs:0x0(%rip) # 338f <hpsa_scsi_do_simple_cmd.constprop.106+0x2f>
338b: R_X86_64_PC32 __preempt_count-0x4
338f: 74 48 je 33d9 <hpsa_scsi_do_simple_cmd.constprop.106+0x79>
3391: 85 c0 test %eax,%eax
3393: 75 4d jne 33e2 <hpsa_scsi_do_simple_cmd.constprop.106+0x82>
3395: 55 push %rbp
3396: 48 89 e5 mov %rsp,%rbp
3399: 53 push %rbx
339a: 48 8d 5d d8 lea -0x28(%rbp),%rbx
339e: 48 83 ec 20 sub $0x20,%rsp
33a2: c7 45 d8 00 00 00 00 movl $0x0,-0x28(%rbp)
33a9: c7 45 e0 00 00 00 00 movl $0x0,-0x20(%rbp)
33b0: 48 8d 43 10 lea 0x10(%rbx),%rax
33b4: 48 89 9e 54 02 00 00 mov %rbx,0x254(%rsi)
33bb: 48 89 45 e8 mov %rax,-0x18(%rbp)
33bf: 48 89 45 f0 mov %rax,-0x10(%rbp)
33c3: e8 f8 ce ff ff callq 2c0 <__enqueue_cmd_and_start_io>
33c8: 48 89 df mov %rbx,%rdi
33cb: e8 00 00 00 00 callq 33d0 <hpsa_scsi_do_simple_cmd.constprop.106+0x70>
33cc: R_X86_64_PC32 wait_for_completion_io-0x4
33d0: 48 83 c4 20 add $0x20,%rsp
33d4: 31 c0 xor %eax,%eax
33d6: 5b pop %rbx
33d7: 5d pop %rbp
33d8: c3 retq
33d9: e8 00 00 00 00 callq 33de <hpsa_scsi_do_simple_cmd.constprop.106+0x7e>
33da: R_X86_64_PC32 ___preempt_schedule-0x4
33de: 85 c0 test %eax,%eax
33e0: 74 b3 je 3395 <hpsa_scsi_do_simple_cmd.constprop.106+0x35>
33e2: 48 8b 86 38 02 00 00 mov 0x238(%rsi),%rax
33e9: ba ff ff ff ff mov $0xffffffff,%edx
33ee: 66 89 50 02 mov %dx,0x2(%rax)
33f2: 31 c0 xor %eax,%eax
33f4: c3 retq
33f5: 90 nop
33f6: 66 2e 0f 1f 84 00 00 nopw %cs:0x0(%rax,%rax,1)
33fd: 00 00 00
It there some compilation flag missing? -f flags when compiling that file are:
-falign-jumps=1
-falign-loops=1
-fconserve-stack
-fno-asynchronous-unwind-tables
-fno-common
-fno-delete-null-pointer-checks
-fno-inline-functions-called-once
-fno-omit-frame-pointer
-fno-optimize-sibling-calls
-fno-strict-aliasing
-fno-strict-overflow
-fno-var-tracking-assignments
-fstack-protector
-funit-at-a-time
thanks,
--
js
suse labs
next prev parent reply other threads:[~2016-02-12 10:36 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-21 22:49 [PATCH 00/33] Compile-time stack metadata validation Josh Poimboeuf
2016-01-21 22:49 ` [PATCH 22/33] x86/asm/bpf: Annotate callable functions Josh Poimboeuf
2016-01-21 22:49 ` [PATCH 23/33] x86/asm/bpf: Create stack frames in bpf_jit.S Josh Poimboeuf
2016-01-22 2:44 ` Alexei Starovoitov
2016-01-22 3:55 ` Josh Poimboeuf
2016-01-22 4:18 ` Alexei Starovoitov
2016-01-22 7:36 ` Ingo Molnar
2016-01-22 15:58 ` Josh Poimboeuf
2016-01-22 17:18 ` Alexei Starovoitov
2016-01-22 17:36 ` Josh Poimboeuf
2016-01-22 17:40 ` Alexei Starovoitov
2016-01-21 22:49 ` [PATCH 31/33] bpf: Add __bpf_prog_run() to stacktool whitelist Josh Poimboeuf
2016-01-21 22:57 ` Daniel Borkmann
2016-01-22 2:55 ` Alexei Starovoitov
2016-01-22 4:13 ` Josh Poimboeuf
2016-01-22 17:19 ` Alexei Starovoitov
2016-01-22 17:43 ` [PATCH 00/33] Compile-time stack metadata validation Chris J Arges
[not found] ` <20160122174348.GB29221-Z7WLFzj8eWMS+FvcfC7Uqw@public.gmane.org>
2016-01-22 19:14 ` Josh Poimboeuf
[not found] ` <20160122191447.GH20502-8wJ5/zUtDR0XGNroddHbYwC/G2K4zDHf@public.gmane.org>
2016-01-22 20:40 ` Chris J Arges
[not found] ` <20160122204034.GA5826-Z7WLFzj8eWMS+FvcfC7Uqw@public.gmane.org>
2016-01-22 20:47 ` Josh Poimboeuf
2016-02-12 10:36 ` Jiri Slaby [this message]
2016-02-12 10:41 ` Jiri Slaby
2016-02-12 14:45 ` Josh Poimboeuf
2016-02-12 17:10 ` Peter Zijlstra
2016-02-12 18:32 ` Josh Poimboeuf
[not found] ` <20160212183206.GB29004-8wJ5/zUtDR0XGNroddHbYwC/G2K4zDHf@public.gmane.org>
2016-02-12 18:34 ` Josh Poimboeuf
2016-02-12 20:10 ` Peter Zijlstra
2016-02-15 16:31 ` Josh Poimboeuf
[not found] ` <20160215163134.GA20585-8wJ5/zUtDR0XGNroddHbYwC/G2K4zDHf@public.gmane.org>
2016-02-15 16:49 ` Peter Zijlstra
[not found] ` <CA+55aFzoPCd_LcSx1FUuEhSBYk2KrfzXGj-Vcn39W5bz=KuZhA@mail.gmail.com>
2016-02-15 20:01 ` Josh Poimboeuf
[not found] ` <CA+55aFzoPCd_LcSx1FUuEhSBYk2KrfzXGj-Vcn39W5bz=KuZhA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-02-15 20:02 ` Andi Kleen
2016-02-23 8:14 ` Ingo Molnar
[not found] ` <20160223081406.GA606-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2016-02-23 14:27 ` Arnaldo Carvalho de Melo
2016-02-23 15:07 ` Josh Poimboeuf
2016-02-23 15:28 ` Arnaldo Carvalho de Melo
2016-02-23 15:01 ` Josh Poimboeuf
2016-02-24 7:40 ` Ingo Molnar
[not found] ` <20160224074054.GA13199-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2016-02-24 16:32 ` Josh Poimboeuf
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