On Fri, Oct 06, 2006 at 05:50:21PM +0200, Muli Ben-Yehuda wrote:
> > What happens if you boot with max_cpus=1?
>
> Trying it now... woohoo, it boots all the way and stays up!
Ok, after verifying that maxcpus=1 causes the problematic changeset to
boot, I also tried maxcpus=1 with the tip of the tree. I hit this NULL
pointer dereference in profile_tick, with and without
maxcpus=1. Disassembly says that get_irq_regs() is returning NULL,
which may or may not be related to the genirq issue.
kernel (hd0,1)/boot/calgary/bzImage root=/dev/sda2 console=tty0 console=ttyS1,1 9200 maxcpus=1
[Linux-bzImage, setup=0x1c00, size=0x2e44df]
initrd (hd0,1)/boot/calgary/aic94xxfw.initramfs.gz
[Linux-initrd @ 0x37e3f000, 0x1b0188 bytes] savedefault
[ 0.000000] Linux version 2.6.19-rc1mx (muli@rhun) (gcc version 3.4.1) #154 S MP Fri Oct 6 17:57:51 IST 2006
[ 0.000000] Command line: root=/dev/sda2 console=tty0 console=ttyS1,19200 max cpus=1
[ 0.000000] BIOS-provided physical RAM map:
[ 0.000000] BIOS-e820: 0000000000000000 - 0000000000099000 (usable)
[ 0.000000] BIOS-e820: 00 (ACPI data)
[ 0.000000] BIOS-e820: 00000000e7fa6a40 - 00000000e8000000 (reserved)
[ 0.000000] BIOS-e820: 00000000fec00000 - 0000000100000000 (reserved)
[ 0.000000] BIOS-e820: 0000000100000000 - 0000000198000000 (usable)
[ 0.000000] end_pfn_map = 1671168
[ 0.000000] DMI 2.3 present.
[ 0.000000] Zone PFN ranges:
[ 0.000000] DMA 0 -> 4096
[ 0.000000] DMA32 4096 -> 1048576
[ 0.000000] Normal 1048576 -> 1671168
[ 0.000000] early_node_map[3] active PFN ranges
[ 0.000000] 0: 0 -> 153
[ 0.000000] 0: 256 -> 950172
[ 0.000000] 0: 1048576 -> 1671168
[ 0.000000] ACPI: PM-Timer IO Port: 0x9c
[ 0.000000] ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
[ 0.000000] Processor #0 (Bootup-CPU)
[ 0.000000] ACPI: LAPIC (acpi_id[0x01] lapic_id[0x01] enabled)
[ 0.000000] Processor #1
[ 0.000000] ACPI: LAPIC (acpi_id[0x02] lapic_id[0x06] enabled)
[ 0.000000] Processor #6
[ 0.000000] ACPI: LAPIC (acpi_id[0x03] lapic_id[0x07] enabled)
[ 0.000000] Processor #7
[ 0.000000] ACPI: LAPIC_NMI APIC (id[0x0f] address[0xfec00000] gsi_base[0])
[ 0.000000] IOAPIC[0]: apic_id 15, address 0xfec00000, GSI 0-35
[ 0.000000] ACPI: IOAPIC (id[0x0e] address[0xfec01000] gsi_base[35])
[ 0.000000] IOAPIC[1]: apic_id 14, address 0xfec01000, GSI 35-70
[ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
[ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 8 global_irq 8 low edge)
[ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 14 global_irq 14 low edge)
[ 0.000000] Setting APIC routing to flat
[ 0.000000] Using ACPI (MADT) for SMP configuration information
[ 0.000000] Nosave address range: 0000000000099000 - 00000000000a0000
[ 0.000000] Nosave address range: 00000000000a0000 - 00000000000e0000
[ 0.000000] Nosave address range: 00000000000e0000 - 0000000000100000
[ 0.000000] Nosave address range: 00000000e7f9c000 - 00000000e7f9d000
[ 0.000000] Nosave address range: 00000000e7f9d000 - 00000000e7fa6000
[ 0.000000] Nosave address range: 00000000e7fa6000 - 00000000e7fa7000
[ 0.000000] Nosave address range: 00000000e7fa7000 - 00000000e8000000
[ 0.000000] Nosave address range: 00000000e8000000 - 00000000fec00000
[ 0.000000] Nosave address range: 00000000fec00000 - 0000000100000000
[ 0.000000] Allocating PCI resources starting at ea000000 (gap: e8000000:16c0 0000)
[ 0.000000] PERCPU: Allocating 34432 bytes of per cpu data
[ 0.000000] Built 1 zonelists. Total pages: 1534050
[ 0.000000] Kernel command line: root=/dev/sda2 console=tty0 console=ttyS1,19 200 maxcpus=1
[ 0.000000] Initializing CPU#0
[ 0.000000] PID hash table entries: 4096 (order: 12, 32768 bytes)
[ 166.530409] Console: colour VGA+ 80x25
[ 168.479402] L 1024
[ 168.629696] ... MAX_LOCKDEP_ENTRIES: 8192
[ 168.655898] ... MAX_LOCKDEP_CHAINS: 8192
[ 168.682097] ... CHAINHASH_SIZE: 4096
[ 168.708299] memory used by lock dependency info: 1328 kB
[ 168.74[ 168.924070] PCI-DMA: Calgary IOMMU detected.
[ 168.949728] PCI-DMA: Calgary TCE table spec is 7, CONFIG_IOMMU_DEBUG is enabl ed.
[ 169.111284] Memory: 6096436k/6684672k available (3788k kernel code, 193708k r eserved, 2727k data, 276k init)
[ 169.249201] Calibrating delay using timer specific routine.. 6346.40 BogoMIPS (lpj=12692802)
[ 169.300193] Mount-cache hash table entries: 256
[ 169.329043] CPU: Trace cache: 12K uops, L1 D cache: 16K
[ 169.360565] CPU: L2 cache: 1024K
[ 169.379968] using mwait in idle threads.
[ 169.403574] CPU: Physical Processor ID: 0
[ 169.427697] CPU: Processor Core ID: 0
[ 169.449745] CPU0: Thermal monitoring enabled (TM1)
[ 169.478556] Freeing SMP alternatives: 32k freed
[ 169.505811] ACPI: Core revision 20060707
[ 169.576566] ..MP-BIOS bug: 8254 timer not connected to IO-APIC
[ 169.651600] Using local APIC timer interrupts.
[ 169.709847] result 10425453
[ 169.726643] Detected 10.425 MHz APIC timer.
[ 169.753344] Brought up 1 CPUs
[ 169.771342] Unable to handle kernel NULL pointer dereference at 0000000000000 088 RIP:
[ 169.804240] [<ffffffff8022de57>] profile_tick+0x34/0x6a
[ 169.851061] PGD 0
[ 169.863259] Oops: 0000 [1] SMP
[ 169.882391] CPU 0
[ 169.894607] Modules linked in:
[ 169.913117] Pid: 1, comm: swapper Not tainted 2.6.19-rc1mx #154
[ 169.948655] RIP: 0010:[<ffffffff8022de57>] [<ffffffff8022de57>] profile_tick +0x34/0x6a
[ 169.996876] RSP: 0000:ffffffff808d8f78 EFLAGS: 00010046
[ 170.028766] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 170.071615] RDX: ffff8100893f5f00 RSI: 0000000000000000 RDI: 0000000000000001
[ 170.114451] RBP: ffffffff808d8f88 R08: 0000000000000002 R09: ffffffff8022d24a
[ 170.157290] R10: ffffffff8022d24a R11: ffffffff80732780 R12: 0000000000000001
[ 170.200134] R13: ffffffff808e8d75 R14: 0000000000000246 R15: 0000000000000012
[ 170.242975] FS: 0000000000000000(0000) GS:ffffffff8085e000(0000) knlGS:00000 00000000000
[ 170.291576] CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b
[ 170.326102] CR2: 0000000000000088 CR3: 0000000000201000 CR4: 00000000000006e0
[ 170.368947] Process swapper (pid: 1, threadinfo ffff810197c7c000, task ffff81 0197c67040)
[ 170.417545] Stack: ffffffff807327c0 0000000000000012 ffffffff808d8f98 ffffff ff8021507e
[ 170.466126] upt+0xe/0x54
[ 170.616246] [<ffffffff80215108>] smp_apic_timer_interrupt+0x44/0x4b
[ 170.654411] [<ffffffff8020a4fb>] apic_timer_interrupt+0x6b/0x70
[ 170.690486] <EOI> [<ffffffff8022d24a>] release_console_sem+0x47/0x200
[ 170.730351] [<ffffffff8022d24a>] release_console_sem+0x47/0x200
[ 18a65>] atomic_notifier_chain_register+0x33/0x3e
[ 170.937284] [<ffffffff808a3359>] spawn_softlockup_task+0x6a/0x6f
[ 170.973876] [<ffffffff80207116>] init+0xce/0x30c
[ 171.002152] [<ffffffff805afd00>] trace_hardirqs_on_thunk+0x35/0x37
[ 171.039796] [<ffffffff80244952>] trace_hardirqs_on+0xf6/0x11a
[ 171.074833] [<ffffffff8020a6e5>] child_rip+0xa/0x15
[ 171.104669] [<ffffffff805b0484>] _spin_unlock_irq+0x29/0x2f
[ 171.138667] [<ffffffff80209e5d>] restore_args+0x0/0x30
[ 171.170065] [<ffffffff80207048>] init+0x0/0x30c
[ 171.197821] [<ffffffff8020a6db>] child_rip+0x0/0x15
[ 171.227660]
[ 171.236634]
[ 171.236635] Code: f6 83 88 00 00 00 03 75 28 65 8b 04 25 24 00 00 00 0f a3 05
[ 171.291160] RIP [<ffffffff8022de57>] profile_tick+0x34/0x6a
[ 171.325282] RSP <ffffffff808d8f78>
[ 171.346230] CR2: 0000000000000088
[ 171.366141] <0>Kernel panic - not syncing: Aiee, killing interrupt handler!
[ 171.408520] <1>Unable to handle kernel NULL pointer d tainted 2.6.19-rc1mx # 154
[ 171.587988] RIP: 0010:[<ffffffff8022de57>] [<ffffffff8022de57>] profile_tick +0x34/0x6a
[ 171.636213] RSP: 0000:ffffffff808d8ba8 EFLAGS: 00010046
[ 171.668098] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[ 171.710945] RDX: ffff8100893f5f00 RSI: 0000000000000001 RDI: 0000000000000001
[ 171.753781] RBP: ffffffff808d8bb8 R08: 0000000000000002 R09: ffffffff80214925
[ 171.796617] R10: ffffffff80732780 R11: ffffffff807307e0 R12: 0000000000000001
[ 171.839455] R13: ffffffff808d8ec8 R14: 0000000000000000 R15: 0000000000000009
[ 171.882291] FS: 0000000000000000(0000) GS:ffffffff8085e000(0000) knlGS:00000 00000000000
[ 171.930894] CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b
[ 171.965414] CR2: 0000000000000088 CR3: 0000000000201000 CR4: 00000000000006e0
[ 172.008261] Process swapper (pid: 1, threadinfo ffff810197c7c000, task ffff81 0197c67040)
[ 172.056859] Stack: ffffffff805eec32 0000000000000000 ffffffff808d8bc8 ffffff ff8021507e
[ 172.105444] ffffffff808d8bd8 ffffffff80215108 ffffffff808d8bf0 ffffffff8020a 4fb
[ 172.150309] ffffffff808d8bf0 ffffffff808d8c78 ffffffff807307e0 ffffffff80732 780
[ 172.193985] Call Trace:
[ 172.209895] <IRQ> [<ffffffff8021507e>] smp_local_timer_interrupt+0xe/0x54
[ 172.251805] [<ffffffff80215108>] smp_apic_timer_interrupt+0x44/0x4b
[ 172.289972] [<ffffffff8020a4fb>] apic_timer_interrupt+0x6b/0x70
[ 172.326049] [<ffffffff80214925>] smp_send_stop+0x24/0x62
[ 172.358484] [<ffffffff8021495f>] smp_send_stop+0x5e/0x62
[ 172.390927] [<ffffffff8022c938>] panic+0xe0/0x195
[ 172.419721] [<ffffffff8022d24a>] release_console_sem+0x47/0x200
[ 172.455808] [<ffffffff8022d24a>] release_console_sem+0x47/0x200
[ 172.491892] [<ffffffff8022d24a>] release_console_sem+0x47/0x200
[ 172.527973] [<ffffffff8022f1b8>] do_exit+0x96/0x87e
[ 172.557810] [<ffffffff802f8022de57>] profile_tick+0x34/0x6a
[ 172.725730] [<ffffffff8022d24a>] release_console_sem+0x47/0x200
[ 172.761811] [<ffem+0x47/0x200
[ 172.914073] [<ffffffff8022d24a>] release_console_sem+0x47/0x200
[ 172.950159] [<ffffffff8022d72e>] vprintk+0x316/0x32e
[ 172.980515] [<ffffffff8022d731>] vprintk+0x319/0x32e
[ 173.010877] [<ffffffff8024426d>] mark_lock+0x8a/0x55d
[ 173.041758] [<ffffffff8022d7e8>] printk+0xa2/0xa4
[ 173.070560] [<ffffffff80238a65>] atomic_notifier_chain_register+0x33/0x3e
[ 173.111850] [<ffffffff808a3359>] spawn_softlockup_task+0x6a/0x6f
[ 173.148440] [<ffffffff80207116>] init+0xce/0x30c
[ 173.176714] [<ffffffff805afd00>] trace_hardirqs_on_thunk+0x35/0x37
[ 173.214309] [<ffffffff80244952>] trace_hardirqs_on+0xf6/0x11a
[ 173.249347] [<ffffffff8020a6e5>] child_rip+0xa/0x15
[ 173.279184] [<ffffffff805b0484>] _spin_unlock_irq+0x29/0x2f
[ 173.313189] [<ffffffff80209e5d>] restore_args+0x0/0x30
[ 173.344587] [<ffffffff80207048>] init+0x0/0x30c
[ 173.372347] [<ffffffff8020a6db>] child_rip+0x0/0x15
[ 173.402138]
[ 173.411114]
[ 173.411114] Code: f6 83 88 00 00 00 03 75 28 65 8b 04 25 24 00 0
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