upstream boot error: UBSAN: null-ptr-deref in corrupted
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syzbot
Dec 17, 2020, 5:14:11 AM12/17/20
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Hello,
syzbot found the following issue on:
HEAD commit: accefff5 Merge tag 'arm-soc-omap-genpd-5.11' of git://git...
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=14567b7f500000
kernel config: https://syzkaller.appspot.com/x/.config?x=1e6efc730c219bd4
dashboard link: https://syzkaller.appspot.com/bug?extid=73d662376f16e2a7336d
compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project.git ca2dcbd030eadbf0aa9b660efe864ff08af6e18b)
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+73d662...@syzkaller.appspotmail.com
Linux version 5.10.0-syzkaller (syzkaller@syzkaller) (clang version 11.0.0 (https://github.com/llvm/llvm-project.git ca2dcbd030eadbf0aa9b660efe864ff08af6e18b), GNU ld (GNU Binutils for Ubuntu) 2.26.1) #0 SMP PREEMPT now
Command line: BOOT_IMAGE=/vmlinuz root=/dev/sda1 console=ttyS0 earlyprintk=serial vsyscall=native oops=panic panic_on_warn=1 nmi_watchdog=panic panic=86400 net.ifnames=0 sysctl.kernel.hung_task_all_cpu_backtrace=1
KERNEL supported cpus:
Intel GenuineIntel
AMD AuthenticAMD
x86/fpu: Supporting XSAVE feature 0x001: 'x87 floating point registers'
x86/fpu: Supporting XSAVE feature 0x002: 'SSE registers'
x86/fpu: Supporting XSAVE feature 0x004: 'AVX registers'
x86/fpu: xstate_offset[2]: 576, xstate_sizes[2]: 256
x86/fpu: Enabled xstate features 0x7, context size is 832 bytes, using 'standard' format.
BIOS-provided physical RAM map:
BIOS-e820: [mem 0x0000000000000000-0x000000000009fbff] usable
BIOS-e820: [mem 0x000000000009fc00-0x000000000009ffff] reserved
BIOS-e820: [mem 0x00000000000f0000-0x00000000000fffff] reserved
BIOS-e820: [mem 0x0000000000100000-0x00000000bfffcfff] usable
BIOS-e820: [mem 0x00000000bfffd000-0x00000000bfffffff] reserved
BIOS-e820: [mem 0x00000000fffbc000-0x00000000ffffffff] reserved
BIOS-e820: [mem 0x0000000100000000-0x000000023fffffff] usable
printk: bootconsole [earlyser0] enabled
ERROR: earlyprintk= earlyser already used
ERROR: earlyprintk= earlyser already used
ERROR: earlyprintk= earlyser already used
nopcid: PCID feature disabled
Malformed early option 'vsyscall'
Malformed early option 'vsyscall'
NX (Execute Disable) protection: active
SMBIOS 2.4 present.
DMI: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Hypervisor detected: KVM
kvm-clock: Using msrs 4b564d01 and 4b564d00
kvm-clock: cpu 0, msr dde2001, primary cpu clock
kvm-clock: using sched offset of 3478136367 cycles
clocksource: kvm-clock: mask: 0xffffffffffffffff max_cycles: 0x1cd42e4dffb, max_idle_ns: 881590591483 ns
tsc: Detected 2300.000 MHz processor
last_pfn = 0x240000 max_arch_pfn = 0x400000000
x86/PAT: Configuration [0-7]: WB WC UC- UC WB WP UC- WT
last_pfn = 0xbfffd max_arch_pfn = 0x400000000
found SMP MP-table at [mem 0x000f25a0-0x000f25af]
Using GB pages for direct mapping
ACPI: Early table checksum verification disabled
ACPI: RSDP 0x00000000000F2320 000014 (v00 Google)
ACPI: RSDT 0x00000000BFFFFFA0 000038 (v01 Google GOOGRSDT 00000001 GOOG 00000001)
ACPI: FACP 0x00000000BFFFF340 0000F4 (v02 Google GOOGFACP 00000001 GOOG 00000001)
================================================================================
UBSAN: null-ptr-deref in drivers/acpi/acpica/tbfadt.c:459:37
member access within null pointer of type 'struct acpi_table_fadt'
CPU: 0 PID: 0 Comm: swapper Not tainted 5.10.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
================================================================================
ACPI: DSDT 0x00000000BFFFDA80 0018BA (v01 Google GOOGDSDT 00000001 GOOG 00000001)
ACPI: FACS 0x00000000BFFFDA40 000040
ACPI: FACS 0x00000000BFFFDA40 000040
ACPI: SRAT 0x00000000BFFFFE70 0000C8 (v03 Google GOOGSRAT 00000001 GOOG 00000001)
ACPI: APIC 0x00000000BFFFFDC0 000076 (v05 Google GOOGAPIC 00000001 GOOG 00000001)
ACPI: SSDT 0x00000000BFFFF440 000980 (v01 Google GOOGSSDT 00000001 GOOG 00000001)
ACPI: WAET 0x00000000BFFFFE40 000028 (v01 Google GOOGWAET 00000001 GOOG 00000001)
SRAT: PXM 0 -> APIC 0x00 -> Node 0
SRAT: PXM 0 -> APIC 0x01 -> Node 0
ACPI: SRAT: Node 0 PXM 0 [mem 0x00000000-0x0009ffff]
ACPI: SRAT: Node 0 PXM 0 [mem 0x00100000-0xbfffffff]
ACPI: SRAT: Node 0 PXM 0 [mem 0x100000000-0x23fffffff]
NUMA: Node 0 [mem 0x00000000-0x0009ffff] + [mem 0x00100000-0xbfffffff] -> [mem 0x00000000-0xbfffffff]
NUMA: Node 0 [mem 0x00000000-0xbfffffff] + [mem 0x100000000-0x23fffffff] -> [mem 0x00000000-0x23fffffff]
Faking node 0 at [mem 0x0000000000000000-0x000000013fffffff] (5120MB)
Faking node 1 at [mem 0x0000000140000000-0x000000023fffffff] (4096MB)
NODE_DATA(0) allocated [mem 0x13fffb000-0x13fffffff]
NODE_DATA(1) allocated [mem 0x23fff8000-0x23fffcfff]
Zone ranges:
DMA [mem 0x0000000000001000-0x0000000000ffffff]
DMA32 [mem 0x0000000001000000-0x00000000ffffffff]
Normal [mem 0x0000000100000000-0x000000023fffffff]
Device empty
Movable zone start for each node
Early memory node ranges
node 0: [mem 0x0000000000001000-0x000000000009efff]
node 0: [mem 0x0000000000100000-0x00000000bfffcfff]
node 0: [mem 0x0000000100000000-0x000000013fffffff]
node 1: [mem 0x0000000140000000-0x000000023fffffff]
Zeroed struct page in unavailable ranges: 101 pages
Initmem setup node 0 [mem 0x0000000000001000-0x000000013fffffff]
Initmem setup node 1 [mem 0x0000000140000000-0x000000023fffffff]
kasan: KernelAddressSanitizer initialized
ACPI: PM-Timer IO Port: 0xb008
ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1])
IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23
ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level)
ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level)
ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level)
Using ACPI (MADT) for SMP configuration information
smpboot: Allowing 2 CPUs, 0 hotplug CPUs
PM: hibernation: Registered nosave memory: [mem 0x00000000-0x00000fff]
PM: hibernation: Registered nosave memory: [mem 0x0009f000-0x0009ffff]
PM: hibernation: Registered nosave memory: [mem 0x000a0000-0x000effff]
PM: hibernation: Registered nosave memory: [mem 0x000f0000-0x000fffff]
PM: hibernation: Registered nosave memory: [mem 0xbfffd000-0xbfffffff]
PM: hibernation: Registered nosave memory: [mem 0xc0000000-0xfffbbfff]
PM: hibernation: Registered nosave memory: [mem 0xfffbc000-0xffffffff]
[mem 0xc0000000-0xfffbbfff] available for PCI devices
Booting paravirtualized kernel on KVM
clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
setup_percpu: NR_CPUS:8 nr_cpumask_bits:8 nr_cpu_ids:2 nr_node_ids:2
percpu: Embedded 63 pages/cpu s221000 r8192 d28856 u1048576
kvm-guest: stealtime: cpu 0, msr b9e1fb00
kvm-guest: PV spinlocks enabled
PV qspinlock hash table entries: 256 (order: 0, 4096 bytes, linear)
Built 2 zonelists, mobility grouping on. Total pages: 2064261
Policy zone: Normal
Kernel command line: earlyprintk=serial oops=panic panic_on_warn=1 nmi_watchdog=panic panic=86400 net.ifnames=0 sysctl.kernel.hung_task_all_cpu_backtrace=1 ima_policy=tcb watchdog_thresh=55 workqueue.watchdog_thresh=140 kvm-intel.nested=1 nf-conntrack-ftp.ports=20000 nf-conntrack-tftp.ports=20000 nf-conntrack-sip.ports=20000 nf-conntrack-irc.ports=20000 nf-conntrack-sane.ports=20000 vivid.n_devs=16 vivid.multiplanar=1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2 netrom.nr_ndevs=16 rose.rose_ndevs=16 spec_store_bypass_disable=prctl numa=fake=2 nopcid dummy_hcd.num=8 binder.debug_mask=0 rcupdate.rcu_expedited=1 root=/dev/sda console=ttyS0 vsyscall=native BOOT_IMAGE=/vmlinuz root=/dev/sda1 console=ttyS0 earlyprintk=serial vsyscall=native oops=panic panic_on_warn=1 nmi_watchdog=panic panic=86400 net.ifnames=0 sysctl.kernel.hung_task_all_cpu_backtrace=1
mem auto-init: stack:off, heap alloc:on, heap free:off
Memory: 6874060K/8388204K available (124958K kernel code, 24337K rwdata, 32104K rodata, 3276K init, 26932K bss, 1513888K reserved, 0K cma-reserved)
SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=2
Running RCU self tests
rcu: Preemptible hierarchical RCU implementation.
rcu: RCU lockdep checking is enabled.
rcu: RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=2.
rcu: RCU callback double-/use-after-free debug enabled.
rcu: RCU debug extended QS entry/exit.
All grace periods are expedited (rcu_expedited).
Trampoline variant of Tasks RCU enabled.
Tracing variant of Tasks RCU enabled.
rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies.
rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2
NR_IRQS: 4352, nr_irqs: 440, preallocated irqs: 16
random: crng done (trusting CPU's manufacturer)
Console: colour VGA+ 80x25
printk: console [ttyS0] enabled
printk: console [ttyS0] enabled
printk: bootconsole [earlyser0] disabled
printk: bootconsole [earlyser0] disabled
Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar
... MAX_LOCKDEP_SUBCLASSES: 8
... MAX_LOCK_DEPTH: 48
... MAX_LOCKDEP_KEYS: 8192
... CLASSHASH_SIZE: 4096
... MAX_LOCKDEP_ENTRIES: 32768
... MAX_LOCKDEP_CHAINS: 65536
... CHAINHASH_SIZE: 32768
memory used by lock dependency info: 6365 kB
memory used for stack traces: 4224 kB
per task-struct memory footprint: 1920 bytes
mempolicy: Enabling automatic NUMA balancing. Configure with numa_balancing= or the kernel.numa_balancing sysctl
ACPI: Core revision 20201113
APIC: Switch to symmetric I/O mode setup
..TIMER: vector=0x30 apic1=0 pin1=0 apic2=-1 pin2=-1
clocksource: tsc-early: mask: 0xffffffffffffffff max_cycles: 0x212735223b2, max_idle_ns: 440795277976 ns
Calibrating delay loop (skipped) preset value.. 4600.00 BogoMIPS (lpj=23000000)
pid_max: default: 32768 minimum: 301
LSM: Security Framework initializing
Yama: becoming mindful.
TOMOYO Linux initialized
Smack: Initializing.
Smack: Netfilter enabled.
Smack: IPv6 Netfilter enabled.
LSM support for eBPF active
Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes, vmalloc)
Inode-cache hash table entries: 524288 (order: 10, 4194304 bytes, vmalloc)
Mount-cache hash table entries: 16384 (order: 5, 131072 bytes, vmalloc)
Mountpoint-cache hash table entries: 16384 (order: 5, 131072 bytes, vmalloc)
Last level iTLB entries: 4KB 1024, 2MB 1024, 4MB 1024
Last level dTLB entries: 4KB 1024, 2MB 1024, 4MB 1024, 1GB 4
Spectre V1 : Mitigation: usercopy/swapgs barriers and __user pointer sanitization
Spectre V2 : Spectre mitigation: kernel not compiled with retpoline; no mitigation available!
Speculative Store Bypass: Mitigation: Speculative Store Bypass disabled via prctl
MDS: Mitigation: Clear CPU buffers
Freeing SMP alternatives memory: 88K
kvm-clock: cpu 1, msr dde2041, secondary cpu clock
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
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syzbot found the following issue on:
HEAD commit: accefff5 Merge tag 'arm-soc-omap-genpd-5.11' of git://git...
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=14567b7f500000
kernel config: https://syzkaller.appspot.com/x/.config?x=1e6efc730c219bd4
dashboard link: https://syzkaller.appspot.com/bug?extid=73d662376f16e2a7336d
compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project.git ca2dcbd030eadbf0aa9b660efe864ff08af6e18b)
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+73d662...@syzkaller.appspotmail.com
Linux version 5.10.0-syzkaller (syzkaller@syzkaller) (clang version 11.0.0 (https://github.com/llvm/llvm-project.git ca2dcbd030eadbf0aa9b660efe864ff08af6e18b), GNU ld (GNU Binutils for Ubuntu) 2.26.1) #0 SMP PREEMPT now
Command line: BOOT_IMAGE=/vmlinuz root=/dev/sda1 console=ttyS0 earlyprintk=serial vsyscall=native oops=panic panic_on_warn=1 nmi_watchdog=panic panic=86400 net.ifnames=0 sysctl.kernel.hung_task_all_cpu_backtrace=1
KERNEL supported cpus:
Intel GenuineIntel
AMD AuthenticAMD
x86/fpu: Supporting XSAVE feature 0x001: 'x87 floating point registers'
x86/fpu: Supporting XSAVE feature 0x002: 'SSE registers'
x86/fpu: Supporting XSAVE feature 0x004: 'AVX registers'
x86/fpu: xstate_offset[2]: 576, xstate_sizes[2]: 256
x86/fpu: Enabled xstate features 0x7, context size is 832 bytes, using 'standard' format.
BIOS-provided physical RAM map:
BIOS-e820: [mem 0x0000000000000000-0x000000000009fbff] usable
BIOS-e820: [mem 0x000000000009fc00-0x000000000009ffff] reserved
BIOS-e820: [mem 0x00000000000f0000-0x00000000000fffff] reserved
BIOS-e820: [mem 0x0000000000100000-0x00000000bfffcfff] usable
BIOS-e820: [mem 0x00000000bfffd000-0x00000000bfffffff] reserved
BIOS-e820: [mem 0x00000000fffbc000-0x00000000ffffffff] reserved
BIOS-e820: [mem 0x0000000100000000-0x000000023fffffff] usable
printk: bootconsole [earlyser0] enabled
ERROR: earlyprintk= earlyser already used
ERROR: earlyprintk= earlyser already used
ERROR: earlyprintk= earlyser already used
nopcid: PCID feature disabled
Malformed early option 'vsyscall'
Malformed early option 'vsyscall'
NX (Execute Disable) protection: active
SMBIOS 2.4 present.
DMI: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Hypervisor detected: KVM
kvm-clock: Using msrs 4b564d01 and 4b564d00
kvm-clock: cpu 0, msr dde2001, primary cpu clock
kvm-clock: using sched offset of 3478136367 cycles
clocksource: kvm-clock: mask: 0xffffffffffffffff max_cycles: 0x1cd42e4dffb, max_idle_ns: 881590591483 ns
tsc: Detected 2300.000 MHz processor
last_pfn = 0x240000 max_arch_pfn = 0x400000000
x86/PAT: Configuration [0-7]: WB WC UC- UC WB WP UC- WT
last_pfn = 0xbfffd max_arch_pfn = 0x400000000
found SMP MP-table at [mem 0x000f25a0-0x000f25af]
Using GB pages for direct mapping
ACPI: Early table checksum verification disabled
ACPI: RSDP 0x00000000000F2320 000014 (v00 Google)
ACPI: RSDT 0x00000000BFFFFFA0 000038 (v01 Google GOOGRSDT 00000001 GOOG 00000001)
ACPI: FACP 0x00000000BFFFF340 0000F4 (v02 Google GOOGFACP 00000001 GOOG 00000001)
================================================================================
UBSAN: null-ptr-deref in drivers/acpi/acpica/tbfadt.c:459:37
member access within null pointer of type 'struct acpi_table_fadt'
CPU: 0 PID: 0 Comm: swapper Not tainted 5.10.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
================================================================================
ACPI: DSDT 0x00000000BFFFDA80 0018BA (v01 Google GOOGDSDT 00000001 GOOG 00000001)
ACPI: FACS 0x00000000BFFFDA40 000040
ACPI: FACS 0x00000000BFFFDA40 000040
ACPI: SRAT 0x00000000BFFFFE70 0000C8 (v03 Google GOOGSRAT 00000001 GOOG 00000001)
ACPI: APIC 0x00000000BFFFFDC0 000076 (v05 Google GOOGAPIC 00000001 GOOG 00000001)
ACPI: SSDT 0x00000000BFFFF440 000980 (v01 Google GOOGSSDT 00000001 GOOG 00000001)
ACPI: WAET 0x00000000BFFFFE40 000028 (v01 Google GOOGWAET 00000001 GOOG 00000001)
SRAT: PXM 0 -> APIC 0x00 -> Node 0
SRAT: PXM 0 -> APIC 0x01 -> Node 0
ACPI: SRAT: Node 0 PXM 0 [mem 0x00000000-0x0009ffff]
ACPI: SRAT: Node 0 PXM 0 [mem 0x00100000-0xbfffffff]
ACPI: SRAT: Node 0 PXM 0 [mem 0x100000000-0x23fffffff]
NUMA: Node 0 [mem 0x00000000-0x0009ffff] + [mem 0x00100000-0xbfffffff] -> [mem 0x00000000-0xbfffffff]
NUMA: Node 0 [mem 0x00000000-0xbfffffff] + [mem 0x100000000-0x23fffffff] -> [mem 0x00000000-0x23fffffff]
Faking node 0 at [mem 0x0000000000000000-0x000000013fffffff] (5120MB)
Faking node 1 at [mem 0x0000000140000000-0x000000023fffffff] (4096MB)
NODE_DATA(0) allocated [mem 0x13fffb000-0x13fffffff]
NODE_DATA(1) allocated [mem 0x23fff8000-0x23fffcfff]
Zone ranges:
DMA [mem 0x0000000000001000-0x0000000000ffffff]
DMA32 [mem 0x0000000001000000-0x00000000ffffffff]
Normal [mem 0x0000000100000000-0x000000023fffffff]
Device empty
Movable zone start for each node
Early memory node ranges
node 0: [mem 0x0000000000001000-0x000000000009efff]
node 0: [mem 0x0000000000100000-0x00000000bfffcfff]
node 0: [mem 0x0000000100000000-0x000000013fffffff]
node 1: [mem 0x0000000140000000-0x000000023fffffff]
Zeroed struct page in unavailable ranges: 101 pages
Initmem setup node 0 [mem 0x0000000000001000-0x000000013fffffff]
Initmem setup node 1 [mem 0x0000000140000000-0x000000023fffffff]
kasan: KernelAddressSanitizer initialized
ACPI: PM-Timer IO Port: 0xb008
ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1])
IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23
ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level)
ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level)
ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level)
Using ACPI (MADT) for SMP configuration information
smpboot: Allowing 2 CPUs, 0 hotplug CPUs
PM: hibernation: Registered nosave memory: [mem 0x00000000-0x00000fff]
PM: hibernation: Registered nosave memory: [mem 0x0009f000-0x0009ffff]
PM: hibernation: Registered nosave memory: [mem 0x000a0000-0x000effff]
PM: hibernation: Registered nosave memory: [mem 0x000f0000-0x000fffff]
PM: hibernation: Registered nosave memory: [mem 0xbfffd000-0xbfffffff]
PM: hibernation: Registered nosave memory: [mem 0xc0000000-0xfffbbfff]
PM: hibernation: Registered nosave memory: [mem 0xfffbc000-0xffffffff]
[mem 0xc0000000-0xfffbbfff] available for PCI devices
Booting paravirtualized kernel on KVM
clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
setup_percpu: NR_CPUS:8 nr_cpumask_bits:8 nr_cpu_ids:2 nr_node_ids:2
percpu: Embedded 63 pages/cpu s221000 r8192 d28856 u1048576
kvm-guest: stealtime: cpu 0, msr b9e1fb00
kvm-guest: PV spinlocks enabled
PV qspinlock hash table entries: 256 (order: 0, 4096 bytes, linear)
Built 2 zonelists, mobility grouping on. Total pages: 2064261
Policy zone: Normal
Kernel command line: earlyprintk=serial oops=panic panic_on_warn=1 nmi_watchdog=panic panic=86400 net.ifnames=0 sysctl.kernel.hung_task_all_cpu_backtrace=1 ima_policy=tcb watchdog_thresh=55 workqueue.watchdog_thresh=140 kvm-intel.nested=1 nf-conntrack-ftp.ports=20000 nf-conntrack-tftp.ports=20000 nf-conntrack-sip.ports=20000 nf-conntrack-irc.ports=20000 nf-conntrack-sane.ports=20000 vivid.n_devs=16 vivid.multiplanar=1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2 netrom.nr_ndevs=16 rose.rose_ndevs=16 spec_store_bypass_disable=prctl numa=fake=2 nopcid dummy_hcd.num=8 binder.debug_mask=0 rcupdate.rcu_expedited=1 root=/dev/sda console=ttyS0 vsyscall=native BOOT_IMAGE=/vmlinuz root=/dev/sda1 console=ttyS0 earlyprintk=serial vsyscall=native oops=panic panic_on_warn=1 nmi_watchdog=panic panic=86400 net.ifnames=0 sysctl.kernel.hung_task_all_cpu_backtrace=1
mem auto-init: stack:off, heap alloc:on, heap free:off
Memory: 6874060K/8388204K available (124958K kernel code, 24337K rwdata, 32104K rodata, 3276K init, 26932K bss, 1513888K reserved, 0K cma-reserved)
SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=2
Running RCU self tests
rcu: Preemptible hierarchical RCU implementation.
rcu: RCU lockdep checking is enabled.
rcu: RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=2.
rcu: RCU callback double-/use-after-free debug enabled.
rcu: RCU debug extended QS entry/exit.
All grace periods are expedited (rcu_expedited).
Trampoline variant of Tasks RCU enabled.
Tracing variant of Tasks RCU enabled.
rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies.
rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2
NR_IRQS: 4352, nr_irqs: 440, preallocated irqs: 16
random: crng done (trusting CPU's manufacturer)
Console: colour VGA+ 80x25
printk: console [ttyS0] enabled
printk: console [ttyS0] enabled
printk: bootconsole [earlyser0] disabled
printk: bootconsole [earlyser0] disabled
Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar
... MAX_LOCKDEP_SUBCLASSES: 8
... MAX_LOCK_DEPTH: 48
... MAX_LOCKDEP_KEYS: 8192
... CLASSHASH_SIZE: 4096
... MAX_LOCKDEP_ENTRIES: 32768
... MAX_LOCKDEP_CHAINS: 65536
... CHAINHASH_SIZE: 32768
memory used by lock dependency info: 6365 kB
memory used for stack traces: 4224 kB
per task-struct memory footprint: 1920 bytes
mempolicy: Enabling automatic NUMA balancing. Configure with numa_balancing= or the kernel.numa_balancing sysctl
ACPI: Core revision 20201113
APIC: Switch to symmetric I/O mode setup
..TIMER: vector=0x30 apic1=0 pin1=0 apic2=-1 pin2=-1
clocksource: tsc-early: mask: 0xffffffffffffffff max_cycles: 0x212735223b2, max_idle_ns: 440795277976 ns
Calibrating delay loop (skipped) preset value.. 4600.00 BogoMIPS (lpj=23000000)
pid_max: default: 32768 minimum: 301
LSM: Security Framework initializing
Yama: becoming mindful.
TOMOYO Linux initialized
Smack: Initializing.
Smack: Netfilter enabled.
Smack: IPv6 Netfilter enabled.
LSM support for eBPF active
Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes, vmalloc)
Inode-cache hash table entries: 524288 (order: 10, 4194304 bytes, vmalloc)
Mount-cache hash table entries: 16384 (order: 5, 131072 bytes, vmalloc)
Mountpoint-cache hash table entries: 16384 (order: 5, 131072 bytes, vmalloc)
Last level iTLB entries: 4KB 1024, 2MB 1024, 4MB 1024
Last level dTLB entries: 4KB 1024, 2MB 1024, 4MB 1024, 1GB 4
Spectre V1 : Mitigation: usercopy/swapgs barriers and __user pointer sanitization
Spectre V2 : Spectre mitigation: kernel not compiled with retpoline; no mitigation available!
Speculative Store Bypass: Mitigation: Speculative Store Bypass disabled via prctl
MDS: Mitigation: Clear CPU buffers
Freeing SMP alternatives memory: 88K
kvm-clock: cpu 1, msr dde2041, secondary cpu clock
---
This report is generated by a bot. It may contain errors.
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Dmitry Vyukov
Dec 17, 2020, 5:38:44 AM12/17/20
to syzbot, Kees Cook, LKML, syzkaller-bugs
On Thu, Dec 17, 2020 at 11:14 AM syzbot
<syzbot+73d662...@syzkaller.appspotmail.com> wrote:
>
> Hello,
>
> syzbot found the following issue on:
>
> HEAD commit: accefff5 Merge tag 'arm-soc-omap-genpd-5.11' of git://git...
> git tree: upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=14567b7f500000
> kernel config: https://syzkaller.appspot.com/x/.config?x=1e6efc730c219bd4
> dashboard link: https://syzkaller.appspot.com/bug?extid=73d662376f16e2a7336d
> compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project.git ca2dcbd030eadbf0aa9b660efe864ff08af6e18b)
>
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: syzbot+73d662...@syzkaller.appspotmail.com
+Kees
<syzbot+73d662...@syzkaller.appspotmail.com> wrote:
>
> Hello,
>
> syzbot found the following issue on:
>
> HEAD commit: accefff5 Merge tag 'arm-soc-omap-genpd-5.11' of git://git...
> git tree: upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=14567b7f500000
> kernel config: https://syzkaller.appspot.com/x/.config?x=1e6efc730c219bd4
> dashboard link: https://syzkaller.appspot.com/bug?extid=73d662376f16e2a7336d
> compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project.git ca2dcbd030eadbf0aa9b660efe864ff08af6e18b)
>
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: syzbot+73d662...@syzkaller.appspotmail.com
Not sure if it's related to UBSAN or not, but we didn't used to get
empty stack traces.
Either way syzbot can't boot the upstream kernel anymore.
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Kees Cook
Dec 18, 2020, 2:47:15 PM12/18/20
to Dmitry Vyukov, syzbot, LKML, syzkaller-bugs
On Thu, Dec 17, 2020 at 11:38:30AM +0100, Dmitry Vyukov wrote:
> On Thu, Dec 17, 2020 at 11:14 AM syzbot
> <syzbot+73d662...@syzkaller.appspotmail.com> wrote:
> >
> > Hello,
> >
> > syzbot found the following issue on:
> >
> > HEAD commit: accefff5 Merge tag 'arm-soc-omap-genpd-5.11' of git://git...
> > git tree: upstream
> > console output: https://syzkaller.appspot.com/x/log.txt?x=14567b7f500000
> > kernel config: https://syzkaller.appspot.com/x/.config?x=1e6efc730c219bd4
> > dashboard link: https://syzkaller.appspot.com/bug?extid=73d662376f16e2a7336d
> > compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project.git ca2dcbd030eadbf0aa9b660efe864ff08af6e18b)
> >
> > IMPORTANT: if you fix the issue, please add the following tag to the commit:
> > Reported-by: syzbot+73d662...@syzkaller.appspotmail.com
>
> +Kees
>
> Not sure if it's related to UBSAN or not, but we didn't used to get
> empty stack traces.
> Either way syzbot can't boot the upstream kernel anymore.
_none_ of them? :(
> On Thu, Dec 17, 2020 at 11:14 AM syzbot
> <syzbot+73d662...@syzkaller.appspotmail.com> wrote:
> >
> > Hello,
> >
> > syzbot found the following issue on:
> >
> > HEAD commit: accefff5 Merge tag 'arm-soc-omap-genpd-5.11' of git://git...
> > git tree: upstream
> > console output: https://syzkaller.appspot.com/x/log.txt?x=14567b7f500000
> > kernel config: https://syzkaller.appspot.com/x/.config?x=1e6efc730c219bd4
> > dashboard link: https://syzkaller.appspot.com/bug?extid=73d662376f16e2a7336d
> > compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project.git ca2dcbd030eadbf0aa9b660efe864ff08af6e18b)
> >
> > IMPORTANT: if you fix the issue, please add the following tag to the commit:
> > Reported-by: syzbot+73d662...@syzkaller.appspotmail.com
>
> +Kees
>
> Not sure if it's related to UBSAN or not, but we didn't used to get
> empty stack traces.
> Either way syzbot can't boot the upstream kernel anymore.
Are you able to see which UBSAN config is tweaking this?
--
Kees Cook
Dmitry Vyukov
Dec 19, 2020, 4:49:02 AM12/19/20
to Kees Cook, syzbot, LKML, syzkaller-bugs
instance is the only one that uses clang:
https://syzkaller.appspot.com/upstream
There is some difference in config between clang/gcc instances, but I
don't see anything obvious that mentions null pointers:
failing clang instance:
CONFIG_ARCH_HAS_UBSAN_SANITIZE_ALL=y
CONFIG_UBSAN=y
# CONFIG_UBSAN_TRAP is not set
CONFIG_CC_HAS_UBSAN_BOUNDS=y
CONFIG_CC_HAS_UBSAN_ARRAY_BOUNDS=y
CONFIG_UBSAN_BOUNDS=y
CONFIG_UBSAN_ARRAY_BOUNDS=y
CONFIG_UBSAN_SHIFT=y
# CONFIG_UBSAN_DIV_ZERO is not set
CONFIG_UBSAN_SIGNED_OVERFLOW=y
# CONFIG_UBSAN_UNSIGNED_OVERFLOW is not set
CONFIG_UBSAN_OBJECT_SIZE=y
CONFIG_UBSAN_BOOL=y
CONFIG_UBSAN_ENUM=y
# CONFIG_UBSAN_ALIGNMENT is not set
CONFIG_UBSAN_SANITIZE_ALL=y
# CONFIG_TEST_UBSAN is not set
working gcc instance:
CONFIG_ARCH_HAS_UBSAN_SANITIZE_ALL=y
CONFIG_UBSAN=y
# CONFIG_UBSAN_TRAP is not set
CONFIG_CC_HAS_UBSAN_BOUNDS=y
CONFIG_UBSAN_BOUNDS=y
CONFIG_UBSAN_ONLY_BOUNDS=y
CONFIG_UBSAN_SHIFT=y
# CONFIG_UBSAN_DIV_ZERO is not set
CONFIG_UBSAN_SIGNED_OVERFLOW=y
CONFIG_UBSAN_BOOL=y
CONFIG_UBSAN_ENUM=y
# CONFIG_UBSAN_ALIGNMENT is not set
CONFIG_UBSAN_SANITIZE_ALL=y
# CONFIG_TEST_UBSAN is not set
syzbot
Apr 9, 2021, 5:47:20 AM4/9/21
to syzkall...@googlegroups.com
Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.
Crashes did not happen for a while, no reproducer and no activity.
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