Linux v4.4-rc3
- Fix for cgroup use after free (rhbz 1282706) - Disable debugging options.
This commit is contained in:
Laura Abbott
parent
9fa8317fdd
commit
ddca097a7d
@ -0,0 +1,92 @@
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From befa45e320edbded63b6900c4ba63df7a8db445c Mon Sep 17 00:00:00 2001
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From: Tejun Heo <tj@kernel.org>
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Date: Mon, 23 Nov 2015 14:55:41 -0500
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Subject: [PATCH] cgroup: make css_set pin its css's to avoid use-afer-free
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A css_set represents the relationship between a set of tasks and
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css's. css_set never pinned the associated css's. This was okay
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because tasks used to always disassociate immediately (in RCU sense) -
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either a task is moved to a different css_set or exits and never
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accesses css_set again.
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Unfortunately, afcf6c8b7544 ("cgroup: add cgroup_subsys->free() method
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and use it to fix pids controller") and patches leading up to it made
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a zombie hold onto its css_set and deref the associated css's on its
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release. Nothing pins the css's after exit and it might have already
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been freed leading to use-after-free.
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general protection fault: 0000 [#1] PREEMPT SMP
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task: ffffffff81bf2500 ti: ffffffff81be4000 task.ti: ffffffff81be4000
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RIP: 0010:[<ffffffff810fa205>] [<ffffffff810fa205>] pids_cancel.constprop.4+0x5/0x40
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...
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Call Trace:
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<IRQ>
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[<ffffffff810fb02d>] ? pids_free+0x3d/0xa0
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[<ffffffff810f8893>] cgroup_free+0x53/0xe0
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[<ffffffff8104ed62>] __put_task_struct+0x42/0x130
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[<ffffffff81053557>] delayed_put_task_struct+0x77/0x130
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[<ffffffff810c6b34>] rcu_process_callbacks+0x2f4/0x820
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[<ffffffff810c6af3>] ? rcu_process_callbacks+0x2b3/0x820
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[<ffffffff81056e54>] __do_softirq+0xd4/0x460
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[<ffffffff81057369>] irq_exit+0x89/0xa0
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[<ffffffff81876212>] smp_apic_timer_interrupt+0x42/0x50
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[<ffffffff818747f4>] apic_timer_interrupt+0x84/0x90
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<EOI>
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...
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Code: 5b 5d c3 48 89 df 48 c7 c2 c9 f9 ae 81 48 c7 c6 91 2c ae 81 e8 1d 94 0e 00 31 c0 5b 5d c3 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 <f0> 48 83 87 e0 00 00 00 ff 78 01 c3 80 3d 08 7a c1 00 00 74 02
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RIP [<ffffffff810fa205>] pids_cancel.constprop.4+0x5/0x40
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RSP <ffff88001fc03e20>
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---[ end trace 89a4a4b916b90c49 ]---
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Kernel panic - not syncing: Fatal exception in interrupt
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Kernel Offset: disabled
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---[ end Kernel panic - not syncing: Fatal exception in interrupt
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Fix it by making css_set pin the associate css's until its release.
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Signed-off-by: Tejun Heo <tj@kernel.org>
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Reported-by: Dave Jones <davej@codemonkey.org.uk>
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Reported-by: Daniel Wagner <daniel.wagner@bmw-carit.de>
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Link: http://lkml.kernel.org/g/20151120041836.GA18390@codemonkey.org.uk
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Link: http://lkml.kernel.org/g/5652D448.3080002@bmw-carit.de
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Fixes: afcf6c8b7544 ("cgroup: add cgroup_subsys->free() method and use it to fix pids controller")
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---
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kernel/cgroup.c | 14 ++++++++++----
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1 file changed, 10 insertions(+), 4 deletions(-)
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diff --git a/kernel/cgroup.c b/kernel/cgroup.c
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index f1603c1..17773d6 100644
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--- a/kernel/cgroup.c
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+++ b/kernel/cgroup.c
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@@ -754,9 +754,11 @@ static void put_css_set_locked(struct css_set *cset)
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if (!atomic_dec_and_test(&cset->refcount))
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return;
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- /* This css_set is dead. unlink it and release cgroup refcounts */
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- for_each_subsys(ss, ssid)
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+ /* This css_set is dead. unlink it and release cgroup and css refs */
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+ for_each_subsys(ss, ssid) {
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list_del(&cset->e_cset_node[ssid]);
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+ css_put(cset->subsys[ssid]);
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+ }
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hash_del(&cset->hlist);
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css_set_count--;
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@@ -1056,9 +1058,13 @@ static struct css_set *find_css_set(struct css_set *old_cset,
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key = css_set_hash(cset->subsys);
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hash_add(css_set_table, &cset->hlist, key);
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- for_each_subsys(ss, ssid)
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+ for_each_subsys(ss, ssid) {
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+ struct cgroup_subsys_state *css = cset->subsys[ssid];
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+
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list_add_tail(&cset->e_cset_node[ssid],
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- &cset->subsys[ssid]->cgroup->e_csets[ssid]);
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+ &css->cgroup->e_csets[ssid]);
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+ css_get(css);
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+ }
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spin_unlock_bh(&css_set_lock);
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--
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2.5.0
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@ -1,63 +0,0 @@
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From 721ebb3cf4788107424f92ac2da6cfce20c67297 Mon Sep 17 00:00:00 2001
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From: Peter Robinson <pbrobinson@gmail.com>
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Date: Sun, 1 Nov 2015 23:54:08 +0000
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Subject: [PATCH] watchdog: omap_wdt: fix null pointer dereference
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Fix issue from two patches overlapping causing a kernel oops
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[ 3569.297449] Unable to handle kernel NULL pointer dereference at virtual address 00000088
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[ 3569.306272] pgd = dc894000
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[ 3569.309287] [00000088] *pgd=00000000
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[ 3569.313104] Internal error: Oops: 5 [#1] SMP ARM
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[ 3569.317986] Modules linked in: ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 xt_conntrack ebtable_filter ebtable_nat ebtable_broute bridge stp llc ebtables ip6table_security ip6table_raw ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_filter ip6_tables iptable_security iptable_raw iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle musb_dsps cppi41 musb_hdrc phy_am335x udc_core phy_generic phy_am335x_control omap_sham omap_aes omap_rng omap_hwspinlock omap_mailbox hwspinlock_core musb_am335x omap_wdt at24 8250_omap leds_gpio cpufreq_dt smsc davinci_mdio mmc_block ti_cpsw cpsw_common ptp pps_core cpsw_ale davinci_cpdma omap_hsmmc omap_dma mmc_core i2c_dev
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[ 3569.386293] CPU: 0 PID: 1429 Comm: wdctl Not tainted 4.3.0-0.rc7.git0.1.fc24.armv7hl #1
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[ 3569.394740] Hardware name: Generic AM33XX (Flattened Device Tree)
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[ 3569.401179] task: dbd11a00 ti: dbaac000 task.ti: dbaac000
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[ 3569.406917] PC is at omap_wdt_get_timeleft+0xc/0x20 [omap_wdt]
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[ 3569.413106] LR is at watchdog_ioctl+0x3cc/0x42c
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[ 3569.417902] pc : [<bf0ab138>] lr : [<c0739c54>] psr: 600f0013
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[ 3569.417902] sp : dbaadf18 ip : 00000003 fp : 7f5d3bbe
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[ 3569.430014] r10: 00000000 r9 : 00000003 r8 : bef21ab8
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[ 3569.435535] r7 : dbbc0f7c r6 : dbbc0f18 r5 : bef21ab8 r4 : 00000000
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[ 3569.442427] r3 : 00000000 r2 : 00000000 r1 : 8004570a r0 : dbbc0f18
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[ 3569.449323] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none
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[ 3569.456858] Control: 10c5387d Table: 9c894019 DAC: 00000051
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[ 3569.462927] Process wdctl (pid: 1429, stack limit = 0xdbaac220)
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[ 3569.469179] Stack: (0xdbaadf18 to 0xdbaae000)
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[ 3569.473790] df00: bef21ab8 dbf60e38
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[ 3569.482441] df20: dc91b840 8004570a bef21ab8 c03988a4 dbaadf48 dc854000 00000000 dd313850
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[ 3569.491092] df40: ddf033b8 0000570a dc91b80b dbaadf3c dbf60e38 00000020 c0df9250 c0df6c48
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[ 3569.499741] df60: dc91b840 8004570a 00000000 dc91b840 dc91b840 8004570a bef21ab8 00000003
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[ 3569.508389] df80: 00000000 c03989d4 bef21b74 7f5d3bad 00000003 00000036 c020fcc4 dbaac000
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[ 3569.517037] dfa0: 00000000 c020fb00 bef21b74 7f5d3bad 00000003 8004570a bef21ab8 00000001
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[ 3569.525685] dfc0: bef21b74 7f5d3bad 00000003 00000036 00000001 00000000 7f5e4eb0 7f5d3bbe
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[ 3569.534334] dfe0: 7f5e4f10 bef21a3c 7f5d0a54 b6e97e0c a00f0010 00000003 00000000 00000000
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[ 3569.543038] [<bf0ab138>] (omap_wdt_get_timeleft [omap_wdt]) from [<c0739c54>] (watchdog_ioctl+0x3cc/0x42c)
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[ 3569.553266] [<c0739c54>] (watchdog_ioctl) from [<c03988a4>] (do_vfs_ioctl+0x5bc/0x698)
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[ 3569.561648] [<c03988a4>] (do_vfs_ioctl) from [<c03989d4>] (SyS_ioctl+0x54/0x7c)
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[ 3569.569400] [<c03989d4>] (SyS_ioctl) from [<c020fb00>] (ret_fast_syscall+0x0/0x3c)
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[ 3569.577413] Code: e12fff1e e52de004 e8bd4000 e5903060 (e5933088)
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[ 3569.584089] ---[ end trace cec3039bd3ae610a ]---
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Cc: <stable@vger.kernel.org> # v4.2+
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Signed-off-by: Peter Robinson <pbrobinson@gmail.com>
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---
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drivers/watchdog/omap_wdt.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/drivers/watchdog/omap_wdt.c b/drivers/watchdog/omap_wdt.c
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index d96bee0..6f17c93 100644
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--- a/drivers/watchdog/omap_wdt.c
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+++ b/drivers/watchdog/omap_wdt.c
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@@ -205,7 +205,7 @@ static int omap_wdt_set_timeout(struct watchdog_device *wdog,
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static unsigned int omap_wdt_get_timeleft(struct watchdog_device *wdog)
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{
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- struct omap_wdt_dev *wdev = watchdog_get_drvdata(wdog);
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+ struct omap_wdt_dev *wdev = to_omap_wdt_dev(wdog);
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void __iomem *base = wdev->base;
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u32 value;
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--
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2.5.0
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@ -31,6 +31,7 @@ CONFIG_ARM64_ERRATUM_824069=y
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CONFIG_ARM64_ERRATUM_819472=y
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CONFIG_ARM64_ERRATUM_832075=y
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CONFIG_ARM64_ERRATUM_843419=y
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CONFIG_ARM64_ERRATUM_834220=y
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CONFIG_CAVIUM_ERRATUM_22375=y
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CONFIG_CAVIUM_ERRATUM_23154=y
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@ -1792,13 +1792,13 @@ CONFIG_B43_PCMCIA=y
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CONFIG_B43_SDIO=y
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CONFIG_B43_BCMA=y
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CONFIG_B43_BCMA_PIO=y
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CONFIG_B43_DEBUG=y
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# CONFIG_B43_DEBUG is not set
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CONFIG_B43_PHY_LP=y
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CONFIG_B43_PHY_N=y
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CONFIG_B43_PHY_HT=y
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CONFIG_B43_PHY_G=y
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CONFIG_B43LEGACY=m
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CONFIG_B43LEGACY_DEBUG=y
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# CONFIG_B43LEGACY_DEBUG is not set
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CONFIG_B43LEGACY_DMA=y
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CONFIG_B43LEGACY_PIO=y
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CONFIG_B43LEGACY_DMA_AND_PIO_MODE=y
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@ -5039,7 +5039,7 @@ CONFIG_PM_DEBUG=y
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# CONFIG_DPM_WATCHDOG is not set # revisit this in debug
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CONFIG_PM_TRACE=y
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CONFIG_PM_TRACE_RTC=y
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CONFIG_PM_TEST_SUSPEND=y
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# CONFIG_PM_TEST_SUSPEND is not set
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# CONFIG_PM_OPP is not set
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# CONFIG_PM_AUTOSLEEP is not set
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# CONFIG_PM_WAKELOCKS is not set
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110
config-nodebug
110
config-nodebug
@ -2,101 +2,101 @@ CONFIG_SND_VERBOSE_PRINTK=y
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CONFIG_SND_DEBUG=y
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CONFIG_SND_PCM_XRUN_DEBUG=y
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CONFIG_DEBUG_ATOMIC_SLEEP=y
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# CONFIG_DEBUG_ATOMIC_SLEEP is not set
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CONFIG_DEBUG_MUTEXES=y
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CONFIG_DEBUG_RT_MUTEXES=y
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CONFIG_DEBUG_LOCK_ALLOC=y
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CONFIG_LOCK_TORTURE_TEST=m
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CONFIG_PROVE_LOCKING=y
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CONFIG_DEBUG_SPINLOCK=y
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CONFIG_PROVE_RCU=y
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# CONFIG_DEBUG_MUTEXES is not set
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# CONFIG_DEBUG_RT_MUTEXES is not set
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# CONFIG_DEBUG_LOCK_ALLOC is not set
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# CONFIG_LOCK_TORTURE_TEST is not set
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# CONFIG_PROVE_LOCKING is not set
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# CONFIG_DEBUG_SPINLOCK is not set
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# CONFIG_PROVE_RCU is not set
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# CONFIG_PROVE_RCU_REPEATEDLY is not set
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CONFIG_DEBUG_PER_CPU_MAPS=y
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# CONFIG_DEBUG_PER_CPU_MAPS is not set
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CONFIG_CPUMASK_OFFSTACK=y
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CONFIG_CPU_NOTIFIER_ERROR_INJECT=m
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# CONFIG_CPU_NOTIFIER_ERROR_INJECT is not set
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CONFIG_FAULT_INJECTION=y
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CONFIG_FAILSLAB=y
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CONFIG_FAIL_PAGE_ALLOC=y
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CONFIG_FAIL_MAKE_REQUEST=y
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CONFIG_FAULT_INJECTION_DEBUG_FS=y
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CONFIG_FAULT_INJECTION_STACKTRACE_FILTER=y
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CONFIG_FAIL_IO_TIMEOUT=y
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CONFIG_FAIL_MMC_REQUEST=y
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# CONFIG_FAULT_INJECTION is not set
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# CONFIG_FAILSLAB is not set
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# CONFIG_FAIL_PAGE_ALLOC is not set
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# CONFIG_FAIL_MAKE_REQUEST is not set
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# CONFIG_FAULT_INJECTION_DEBUG_FS is not set
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# CONFIG_FAULT_INJECTION_STACKTRACE_FILTER is not set
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# CONFIG_FAIL_IO_TIMEOUT is not set
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# CONFIG_FAIL_MMC_REQUEST is not set
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CONFIG_LOCK_STAT=y
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# CONFIG_LOCK_STAT is not set
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CONFIG_DEBUG_STACK_USAGE=y
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# CONFIG_DEBUG_STACK_USAGE is not set
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CONFIG_ACPI_DEBUG=y
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# CONFIG_ACPI_DEBUG is not set
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# CONFIG_ACPI_DEBUGGER is not set
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CONFIG_DEBUG_SG=y
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CONFIG_DEBUG_PI_LIST=y
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# CONFIG_DEBUG_SG is not set
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# CONFIG_DEBUG_PI_LIST is not set
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# CONFIG_PAGE_EXTENSION is not set
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# CONFIG_PAGE_OWNER is not set
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# CONFIG_DEBUG_PAGEALLOC is not set
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CONFIG_DEBUG_OBJECTS=y
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# CONFIG_DEBUG_OBJECTS is not set
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# CONFIG_DEBUG_OBJECTS_SELFTEST is not set
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CONFIG_DEBUG_OBJECTS_FREE=y
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CONFIG_DEBUG_OBJECTS_TIMERS=y
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CONFIG_DEBUG_OBJECTS_RCU_HEAD=y
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# CONFIG_DEBUG_OBJECTS_FREE is not set
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# CONFIG_DEBUG_OBJECTS_TIMERS is not set
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# CONFIG_DEBUG_OBJECTS_RCU_HEAD is not set
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CONFIG_DEBUG_OBJECTS_ENABLE_DEFAULT=1
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CONFIG_X86_PTDUMP=y
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CONFIG_ARM64_PTDUMP=y
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CONFIG_EFI_PGT_DUMP=y
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# CONFIG_ARM64_PTDUMP is not set
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# CONFIG_EFI_PGT_DUMP is not set
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CONFIG_CAN_DEBUG_DEVICES=y
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# CONFIG_CAN_DEBUG_DEVICES is not set
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CONFIG_MODULE_FORCE_UNLOAD=y
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# CONFIG_MODULE_FORCE_UNLOAD is not set
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CONFIG_DEBUG_NOTIFIERS=y
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# CONFIG_DEBUG_NOTIFIERS is not set
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CONFIG_DMA_API_DEBUG=y
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# CONFIG_DMA_API_DEBUG is not set
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CONFIG_MMIOTRACE=y
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# CONFIG_MMIOTRACE is not set
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CONFIG_DEBUG_CREDENTIALS=y
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# CONFIG_DEBUG_CREDENTIALS is not set
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# off in both production debug and nodebug builds,
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# on in rawhide nodebug builds
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CONFIG_DEBUG_FORCE_WEAK_PER_CPU=y
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# CONFIG_DEBUG_FORCE_WEAK_PER_CPU is not set
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CONFIG_EXT4_DEBUG=y
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# CONFIG_EXT4_DEBUG is not set
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# CONFIG_XFS_WARN is not set
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CONFIG_DEBUG_PERF_USE_VMALLOC=y
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# CONFIG_DEBUG_PERF_USE_VMALLOC is not set
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||||
CONFIG_JBD2_DEBUG=y
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# CONFIG_JBD2_DEBUG is not set
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CONFIG_NFSD_FAULT_INJECTION=y
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# CONFIG_NFSD_FAULT_INJECTION is not set
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CONFIG_DEBUG_BLK_CGROUP=y
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# CONFIG_DEBUG_BLK_CGROUP is not set
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CONFIG_DRBD_FAULT_INJECTION=y
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# CONFIG_DRBD_FAULT_INJECTION is not set
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CONFIG_ATH_DEBUG=y
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CONFIG_CARL9170_DEBUGFS=y
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CONFIG_IWLWIFI_DEVICE_TRACING=y
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# CONFIG_ATH_DEBUG is not set
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# CONFIG_CARL9170_DEBUGFS is not set
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# CONFIG_IWLWIFI_DEVICE_TRACING is not set
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# CONFIG_RTLWIFI_DEBUG is not set
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||||
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CONFIG_DEBUG_OBJECTS_WORK=y
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# CONFIG_DEBUG_OBJECTS_WORK is not set
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||||
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||||
CONFIG_DMADEVICES_DEBUG=y
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# CONFIG_DMADEVICES_DEBUG is not set
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# CONFIG_DMADEVICES_VDEBUG is not set
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CONFIG_PM_ADVANCED_DEBUG=y
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CONFIG_CEPH_LIB_PRETTYDEBUG=y
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||||
CONFIG_QUOTA_DEBUG=y
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||||
# CONFIG_CEPH_LIB_PRETTYDEBUG is not set
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# CONFIG_QUOTA_DEBUG is not set
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||||
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CONFIG_KGDB_KDB=y
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@ -104,18 +104,18 @@ CONFIG_KDB_DEFAULT_ENABLE=0x0
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CONFIG_KDB_KEYBOARD=y
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CONFIG_KDB_CONTINUE_CATASTROPHIC=0
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|
||||
CONFIG_DEBUG_OBJECTS_PERCPU_COUNTER=y
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# CONFIG_DEBUG_OBJECTS_PERCPU_COUNTER is not set
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# CONFIG_PERCPU_TEST is not set
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||||
CONFIG_TEST_LIST_SORT=y
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||||
# CONFIG_TEST_LIST_SORT is not set
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||||
# CONFIG_TEST_STRING_HELPERS is not set
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CONFIG_DETECT_HUNG_TASK=y
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# CONFIG_DETECT_HUNG_TASK is not set
|
||||
CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=120
|
||||
# CONFIG_BOOTPARAM_HUNG_TASK_PANIC is not set
|
||||
|
||||
CONFIG_X86_BOOTPARAM_MEMORY_CORRUPTION_CHECK=y
|
||||
# CONFIG_X86_BOOTPARAM_MEMORY_CORRUPTION_CHECK is not set
|
||||
|
||||
CONFIG_DEBUG_KMEMLEAK=y
|
||||
# CONFIG_DEBUG_KMEMLEAK is not set
|
||||
CONFIG_DEBUG_KMEMLEAK_EARLY_LOG_SIZE=1024
|
||||
# CONFIG_DEBUG_KMEMLEAK_TEST is not set
|
||||
CONFIG_DEBUG_KMEMLEAK_DEFAULT_OFF=y
|
||||
@ -126,4 +126,4 @@ CONFIG_DEBUG_KMEMLEAK_DEFAULT_OFF=y
|
||||
|
||||
# CONFIG_SPI_DEBUG is not set
|
||||
|
||||
CONFIG_X86_DEBUG_STATIC_CPU_HAS=y
|
||||
# CONFIG_X86_DEBUG_STATIC_CPU_HAS is not set
|
||||
|
||||
@ -365,7 +365,7 @@ CONFIG_SP5100_TCO=m
|
||||
|
||||
# CONFIG_MEMTEST is not set
|
||||
# CONFIG_DEBUG_TLBFLUSH is not set
|
||||
CONFIG_MAXSMP=y
|
||||
# CONFIG_MAXSMP is not set
|
||||
|
||||
|
||||
CONFIG_HP_ILO=m
|
||||
|
||||
16
kernel.spec
16
kernel.spec
@ -65,9 +65,9 @@ Summary: The Linux kernel
|
||||
# The next upstream release sublevel (base_sublevel+1)
|
||||
%define upstream_sublevel %(echo $((%{base_sublevel} + 1)))
|
||||
# The rc snapshot level
|
||||
%define rcrev 2
|
||||
%define rcrev 3
|
||||
# The git snapshot level
|
||||
%define gitrev 2
|
||||
%define gitrev 0
|
||||
# Set rpm version accordingly
|
||||
%define rpmversion 4.%{upstream_sublevel}.0
|
||||
%endif
|
||||
@ -122,7 +122,7 @@ Summary: The Linux kernel
|
||||
# Set debugbuildsenabled to 1 for production (build separate debug kernels)
|
||||
# and 0 for rawhide (all kernels are debug kernels).
|
||||
# See also 'make debug' and 'make release'.
|
||||
%define debugbuildsenabled 0
|
||||
%define debugbuildsenabled 1
|
||||
|
||||
# Want to build a vanilla kernel build without any non-upstream patches?
|
||||
%define with_vanilla %{?_with_vanilla: 1} %{?!_with_vanilla: 0}
|
||||
@ -502,8 +502,6 @@ Patch456: arm64-acpi-drop-expert-patch.patch
|
||||
|
||||
Patch457: ARM-tegra-usb-no-reset.patch
|
||||
|
||||
Patch459: 0001-watchdog-omap_wdt-fix-null-pointer-dereference.patch
|
||||
|
||||
Patch460: mfd-wm8994-Ensure-that-the-whole-MFD-is-built-into-a.patch
|
||||
|
||||
Patch463: arm-i.MX6-Utilite-device-dtb.patch
|
||||
@ -590,6 +588,9 @@ Patch510: 0001-iwlwifi-Add-new-PCI-IDs-for-the-8260-series.patch
|
||||
#CVE-2015-7990 rhbz 1276437 1276438
|
||||
Patch511: RDS-fix-race-condition-when-sending-a-message-on-unb.patch
|
||||
|
||||
#rhbz 1282706
|
||||
Patch512: 0001-cgroup-make-css_set-pin-its-css-s-to-avoid-use-afer-.patch
|
||||
|
||||
# END OF PATCH DEFINITIONS
|
||||
|
||||
%endif
|
||||
@ -2033,6 +2034,11 @@ fi
|
||||
#
|
||||
#
|
||||
%changelog
|
||||
* Mon Nov 30 2015 Laura Abbott <labbott@redhat.com> - 4.4.0-0.rc3.git0.1
|
||||
- Linux v4.4-rc3
|
||||
- Fix for cgroup use after free (rhbz 1282706)
|
||||
- Disable debugging options.
|
||||
|
||||
* Wed Nov 25 2015 Laura Abbott <labbott@redhat.com> - 4.4.0-0.rc2.git2.1
|
||||
- Linux v4.4-rc2-44-g6ffeba9
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user