* [syzbot] BUG: unable to handle kernel NULL pointer dereference in nci_cmd_timer
@ 2022-11-16 10:52 syzbot
2022-11-16 13:11 ` Lin Ma
0 siblings, 1 reply; 4+ messages in thread
From: syzbot @ 2022-11-16 10:52 UTC (permalink / raw)
To: davem, edumazet, krzysztof.kozlowski, kuba, linma, linux-kernel,
netdev, pabeni, syzkaller-bugs
Hello,
syzbot found the following issue on:
HEAD commit: 9500fc6e9e60 Merge branch 'for-next/core' into for-kernelci
git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci
console output: https://syzkaller.appspot.com/x/log.txt?x=16cbf7a5880000
kernel config: https://syzkaller.appspot.com/x/.config?x=b25c9f218686dd5e
dashboard link: https://syzkaller.appspot.com/bug?extid=10257d01dd285b15170a
compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2
userspace arch: arm64
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1354dce9880000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10880a95880000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/1363e60652f7/disk-9500fc6e.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/fcc4da811bb6/vmlinux-9500fc6e.xz
kernel image: https://storage.googleapis.com/syzbot-assets/0b554298f1fa/Image-9500fc6e.gz.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+10257d01dd285b15170a@syzkaller.appspotmail.com
Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000
Mem abort info:
ESR = 0x0000000096000004
EC = 0x25: DABT (current EL), IL = 32 bits
SET = 0, FnV = 0
EA = 0, S1PTW = 0
FSC = 0x04: level 0 translation fault
Data abort info:
ISV = 0, ISS = 0x00000004
CM = 0, WnR = 0
user pgtable: 4k pages, 48-bit VAs, pgdp=000000010c75b000
[0000000000000000] pgd=0000000000000000, p4d=0000000000000000
Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.1.0-rc5-syzkaller-32269-g9500fc6e9e60 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/30/2022
pstate: 004000c5 (nzcv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : __queue_work+0x3c4/0x8b4
lr : __queue_work+0x3c4/0x8b4 kernel/workqueue.c:1458
sp : ffff800008003d60
x29: ffff800008003d60 x28: 0000000000000000 x27: ffff80000d3a9000
x26: ffff80000d3ad050 x25: ffff80000d2fe008 x24: ffff80000db54000
x23: 0000000000000000 x22: 0000000000000023 x21: ffff0000c7a95400
x20: 0000000000000008 x19: ffff0000cd0d20f8 x18: ffff80000db78158
x17: ffff80000ddda198 x16: ffff80000dc18158 x15: ffff80000d3cbc80
x14: 0000000000000000 x13: 00000000ffffffff x12: ffff80000d3cbc80
x11: ff8080000c07dfe4 x10: 0000000000000000 x9 : ffff80000c07dfe4
x8 : ffff80000d3cbc80 x7 : ffff80000813bae8 x6 : 0000000000000000
x5 : 0000000000000080 x4 : 0000000000000000 x3 : 0000000000000002
x2 : 0000000000000008 x1 : 0000000000000000 x0 : ffff0000c0014c00
Call trace:
__queue_work+0x3c4/0x8b4 kernel/workqueue.c:1458
queue_work_on+0xb0/0x15c kernel/workqueue.c:1545
queue_work include/linux/workqueue.h:503 [inline]
nci_cmd_timer+0x30/0x40 net/nfc/nci/core.c:615
call_timer_fn+0x90/0x144 kernel/time/timer.c:1474
expire_timers kernel/time/timer.c:1519 [inline]
__run_timers+0x280/0x374 kernel/time/timer.c:1790
run_timer_softirq+0x34/0x5c kernel/time/timer.c:1803
_stext+0x168/0x37c
____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:79
call_on_irq_stack+0x2c/0x54 arch/arm64/kernel/entry.S:892
do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:84
invoke_softirq+0x70/0xbc kernel/softirq.c:452
__irq_exit_rcu+0xf0/0x140 kernel/softirq.c:650
irq_exit_rcu+0x10/0x40 kernel/softirq.c:662
__el1_irq arch/arm64/kernel/entry-common.c:472 [inline]
el1_interrupt+0x38/0x68 arch/arm64/kernel/entry-common.c:486
el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:491
el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:580
arch_local_irq_enable+0xc/0x18 arch/arm64/include/asm/irqflags.h:35
default_idle_call+0x48/0xb8 kernel/sched/idle.c:109
cpuidle_idle_call kernel/sched/idle.c:191 [inline]
do_idle+0x110/0x2d4 kernel/sched/idle.c:303
cpu_startup_entry+0x24/0x28 kernel/sched/idle.c:400
kernel_init+0x0/0x290 init/main.c:729
start_kernel+0x0/0x620 init/main.c:890
start_kernel+0x450/0x620 init/main.c:1145
__primary_switched+0xb4/0xbc arch/arm64/kernel/head.S:471
Code: 94001384 aa0003f7 aa1303e0 9400144a (f94002f8)
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
0: 94001384 bl 0x4e10
4: aa0003f7 mov x23, x0
8: aa1303e0 mov x0, x19
c: 9400144a bl 0x5134
* 10: f94002f8 ldr x24, [x23] <-- trapping instruction
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzkaller@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot can test patches for this issue, for details see:
https://goo.gl/tpsmEJ#testing-patches
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [syzbot] BUG: unable to handle kernel NULL pointer dereference in nci_cmd_timer
2022-11-16 10:52 [syzbot] BUG: unable to handle kernel NULL pointer dereference in nci_cmd_timer syzbot
@ 2022-11-16 13:11 ` Lin Ma
2022-11-16 18:17 ` syzbot
2022-11-30 9:28 ` Dmitry Vyukov
0 siblings, 2 replies; 4+ messages in thread
From: Lin Ma @ 2022-11-16 13:11 UTC (permalink / raw)
To: syzbot
Cc: davem, edumazet, krzysztof.kozlowski, kuba, linux-kernel, netdev,
pabeni, syzkaller-bugs
> From: syzbot <syzbot+10257d01dd285b15170a@syzkaller.appspotmail.com>
> Sent Time: 2022-11-16 18:52:37 (Wednesday)
> To: davem@davemloft.net, edumazet@google.com, krzysztof.kozlowski@linaro.org, kuba@kernel.org, linma@zju.edu.cn, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, pabeni@redhat.com, syzkaller-bugs@googlegroups.com
> Cc:
> Subject: [syzbot] BUG: unable to handle kernel NULL pointer dereference in nci_cmd_timer
>
> Hello,
>
> syzbot found the following issue on:
>
> HEAD commit: 9500fc6e9e60 Merge branch 'for-next/core' into for-kernelci
> git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci
> console output: https://syzkaller.appspot.com/x/log.txt?x=16cbf7a5880000
> kernel config: https://syzkaller.appspot.com/x/.config?x=b25c9f218686dd5e
> dashboard link: https://syzkaller.appspot.com/bug?extid=10257d01dd285b15170a
> compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2
> userspace arch: arm64
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1354dce9880000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10880a95880000
>
> Downloadable assets:
> disk image: https://storage.googleapis.com/syzbot-assets/1363e60652f7/disk-9500fc6e.raw.xz
> vmlinux: https://storage.googleapis.com/syzbot-assets/fcc4da811bb6/vmlinux-9500fc6e.xz
> kernel image: https://storage.googleapis.com/syzbot-assets/0b554298f1fa/Image-9500fc6e.gz.xz
>
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: syzbot+10257d01dd285b15170a@syzkaller.appspotmail.com
>
> Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000
> Mem abort info:
> ESR = 0x0000000096000004
> EC = 0x25: DABT (current EL), IL = 32 bits
> SET = 0, FnV = 0
> EA = 0, S1PTW = 0
> FSC = 0x04: level 0 translation fault
> Data abort info:
> ISV = 0, ISS = 0x00000004
> CM = 0, WnR = 0
> user pgtable: 4k pages, 48-bit VAs, pgdp=000000010c75b000
> [0000000000000000] pgd=0000000000000000, p4d=0000000000000000
> Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP
> Modules linked in:
> CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.1.0-rc5-syzkaller-32269-g9500fc6e9e60 #0
> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/30/2022
> pstate: 004000c5 (nzcv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
> pc : __queue_work+0x3c4/0x8b4
> lr : __queue_work+0x3c4/0x8b4 kernel/workqueue.c:1458
> sp : ffff800008003d60
> x29: ffff800008003d60 x28: 0000000000000000 x27: ffff80000d3a9000
> x26: ffff80000d3ad050 x25: ffff80000d2fe008 x24: ffff80000db54000
> x23: 0000000000000000 x22: 0000000000000023 x21: ffff0000c7a95400
> x20: 0000000000000008 x19: ffff0000cd0d20f8 x18: ffff80000db78158
> x17: ffff80000ddda198 x16: ffff80000dc18158 x15: ffff80000d3cbc80
> x14: 0000000000000000 x13: 00000000ffffffff x12: ffff80000d3cbc80
> x11: ff8080000c07dfe4 x10: 0000000000000000 x9 : ffff80000c07dfe4
> x8 : ffff80000d3cbc80 x7 : ffff80000813bae8 x6 : 0000000000000000
> x5 : 0000000000000080 x4 : 0000000000000000 x3 : 0000000000000002
> x2 : 0000000000000008 x1 : 0000000000000000 x0 : ffff0000c0014c00
> Call trace:
> __queue_work+0x3c4/0x8b4 kernel/workqueue.c:1458
> queue_work_on+0xb0/0x15c kernel/workqueue.c:1545
> queue_work include/linux/workqueue.h:503 [inline]
> nci_cmd_timer+0x30/0x40 net/nfc/nci/core.c:615
> call_timer_fn+0x90/0x144 kernel/time/timer.c:1474
> expire_timers kernel/time/timer.c:1519 [inline]
> __run_timers+0x280/0x374 kernel/time/timer.c:1790
> run_timer_softirq+0x34/0x5c kernel/time/timer.c:1803
> _stext+0x168/0x37c
> ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:79
> call_on_irq_stack+0x2c/0x54 arch/arm64/kernel/entry.S:892
> do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:84
> invoke_softirq+0x70/0xbc kernel/softirq.c:452
> __irq_exit_rcu+0xf0/0x140 kernel/softirq.c:650
> irq_exit_rcu+0x10/0x40 kernel/softirq.c:662
> __el1_irq arch/arm64/kernel/entry-common.c:472 [inline]
> el1_interrupt+0x38/0x68 arch/arm64/kernel/entry-common.c:486
> el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:491
> el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:580
> arch_local_irq_enable+0xc/0x18 arch/arm64/include/asm/irqflags.h:35
> default_idle_call+0x48/0xb8 kernel/sched/idle.c:109
> cpuidle_idle_call kernel/sched/idle.c:191 [inline]
> do_idle+0x110/0x2d4 kernel/sched/idle.c:303
> cpu_startup_entry+0x24/0x28 kernel/sched/idle.c:400
> kernel_init+0x0/0x290 init/main.c:729
> start_kernel+0x0/0x620 init/main.c:890
> start_kernel+0x450/0x620 init/main.c:1145
> __primary_switched+0xb4/0xbc arch/arm64/kernel/head.S:471
> Code: 94001384 aa0003f7 aa1303e0 9400144a (f94002f8)
> ---[ end trace 0000000000000000 ]---
> ----------------
> Code disassembly (best guess):
> 0: 94001384 bl 0x4e10
> 4: aa0003f7 mov x23, x0
> 8: aa1303e0 mov x0, x19
> c: 9400144a bl 0x5134
> * 10: f94002f8 ldr x24, [x23] <-- trapping instruction
>
>
> ---
> This report is generated by a bot. It may contain errors.
> See https://goo.gl/tpsmEJ for more information about syzbot.
> syzbot engineers can be reached at syzkaller@googlegroups.com.
>
> syzbot will keep track of this issue. See:
> https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
> syzbot can test patches for this issue, for details see:
> https://goo.gl/tpsmEJ#testing-patches
#syz test: https://github.com/f0rm2l1n/linux-fix.git master
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [syzbot] BUG: unable to handle kernel NULL pointer dereference in nci_cmd_timer
2022-11-16 13:11 ` Lin Ma
@ 2022-11-16 18:17 ` syzbot
2022-11-30 9:28 ` Dmitry Vyukov
1 sibling, 0 replies; 4+ messages in thread
From: syzbot @ 2022-11-16 18:17 UTC (permalink / raw)
To: davem, edumazet, krzysztof.kozlowski, kuba, linma, linux-kernel,
netdev, pabeni, syzkaller-bugs
Hello,
syzbot has tested the proposed patch and the reproducer did not trigger any issue:
Reported-and-tested-by: syzbot+10257d01dd285b15170a@syzkaller.appspotmail.com
Tested on:
commit: 1c96c97c nfc/nci: fix race with opening and closing
git tree: https://github.com/f0rm2l1n/linux-fix.git master
console output: https://syzkaller.appspot.com/x/log.txt?x=16b3ea01880000
kernel config: https://syzkaller.appspot.com/x/.config?x=c42faa14acb6dc7f
dashboard link: https://syzkaller.appspot.com/bug?extid=10257d01dd285b15170a
compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2
userspace arch: arm64
Note: no patches were applied.
Note: testing is done by a robot and is best-effort only.
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [syzbot] BUG: unable to handle kernel NULL pointer dereference in nci_cmd_timer
2022-11-16 13:11 ` Lin Ma
2022-11-16 18:17 ` syzbot
@ 2022-11-30 9:28 ` Dmitry Vyukov
1 sibling, 0 replies; 4+ messages in thread
From: Dmitry Vyukov @ 2022-11-30 9:28 UTC (permalink / raw)
To: Lin Ma, 马麟
Cc: syzbot, krzysztof.kozlowski, linux-kernel, netdev, syzkaller-bugs
On Wed, 16 Nov 2022 at 14:11, Lin Ma <linma@zju.edu.cn> wrote:
>
> > Subject: [syzbot] BUG: unable to handle kernel NULL pointer dereference in nci_cmd_timer
> >
> > Hello,
> >
> > syzbot found the following issue on:
> >
> > HEAD commit: 9500fc6e9e60 Merge branch 'for-next/core' into for-kernelci
> > git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci
> > console output: https://syzkaller.appspot.com/x/log.txt?x=16cbf7a5880000
> > kernel config: https://syzkaller.appspot.com/x/.config?x=b25c9f218686dd5e
> > dashboard link: https://syzkaller.appspot.com/bug?extid=10257d01dd285b15170a
> > compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2
> > userspace arch: arm64
> > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1354dce9880000
> > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10880a95880000
> >
> > Downloadable assets:
> > disk image: https://storage.googleapis.com/syzbot-assets/1363e60652f7/disk-9500fc6e.raw.xz
> > vmlinux: https://storage.googleapis.com/syzbot-assets/fcc4da811bb6/vmlinux-9500fc6e.xz
> > kernel image: https://storage.googleapis.com/syzbot-assets/0b554298f1fa/Image-9500fc6e.gz.xz
> >
> > IMPORTANT: if you fix the issue, please add the following tag to the commit:
> > Reported-by: syzbot+10257d01dd285b15170a@syzkaller.appspotmail.com
> >
> > Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000
> > Mem abort info:
> > ESR = 0x0000000096000004
> > EC = 0x25: DABT (current EL), IL = 32 bits
> > SET = 0, FnV = 0
> > EA = 0, S1PTW = 0
> > FSC = 0x04: level 0 translation fault
> > Data abort info:
> > ISV = 0, ISS = 0x00000004
> > CM = 0, WnR = 0
> > user pgtable: 4k pages, 48-bit VAs, pgdp=000000010c75b000
> > [0000000000000000] pgd=0000000000000000, p4d=0000000000000000
> > Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP
> > Modules linked in:
> > CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.1.0-rc5-syzkaller-32269-g9500fc6e9e60 #0
> > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/30/2022
> > pstate: 004000c5 (nzcv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
> > pc : __queue_work+0x3c4/0x8b4
> > lr : __queue_work+0x3c4/0x8b4 kernel/workqueue.c:1458
> > sp : ffff800008003d60
> > x29: ffff800008003d60 x28: 0000000000000000 x27: ffff80000d3a9000
> > x26: ffff80000d3ad050 x25: ffff80000d2fe008 x24: ffff80000db54000
> > x23: 0000000000000000 x22: 0000000000000023 x21: ffff0000c7a95400
> > x20: 0000000000000008 x19: ffff0000cd0d20f8 x18: ffff80000db78158
> > x17: ffff80000ddda198 x16: ffff80000dc18158 x15: ffff80000d3cbc80
> > x14: 0000000000000000 x13: 00000000ffffffff x12: ffff80000d3cbc80
> > x11: ff8080000c07dfe4 x10: 0000000000000000 x9 : ffff80000c07dfe4
> > x8 : ffff80000d3cbc80 x7 : ffff80000813bae8 x6 : 0000000000000000
> > x5 : 0000000000000080 x4 : 0000000000000000 x3 : 0000000000000002
> > x2 : 0000000000000008 x1 : 0000000000000000 x0 : ffff0000c0014c00
> > Call trace:
> > __queue_work+0x3c4/0x8b4 kernel/workqueue.c:1458
> > queue_work_on+0xb0/0x15c kernel/workqueue.c:1545
> > queue_work include/linux/workqueue.h:503 [inline]
> > nci_cmd_timer+0x30/0x40 net/nfc/nci/core.c:615
> > call_timer_fn+0x90/0x144 kernel/time/timer.c:1474
> > expire_timers kernel/time/timer.c:1519 [inline]
> > __run_timers+0x280/0x374 kernel/time/timer.c:1790
> > run_timer_softirq+0x34/0x5c kernel/time/timer.c:1803
> > _stext+0x168/0x37c
> > ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:79
> > call_on_irq_stack+0x2c/0x54 arch/arm64/kernel/entry.S:892
> > do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:84
> > invoke_softirq+0x70/0xbc kernel/softirq.c:452
> > __irq_exit_rcu+0xf0/0x140 kernel/softirq.c:650
> > irq_exit_rcu+0x10/0x40 kernel/softirq.c:662
> > __el1_irq arch/arm64/kernel/entry-common.c:472 [inline]
> > el1_interrupt+0x38/0x68 arch/arm64/kernel/entry-common.c:486
> > el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:491
> > el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:580
> > arch_local_irq_enable+0xc/0x18 arch/arm64/include/asm/irqflags.h:35
> > default_idle_call+0x48/0xb8 kernel/sched/idle.c:109
> > cpuidle_idle_call kernel/sched/idle.c:191 [inline]
> > do_idle+0x110/0x2d4 kernel/sched/idle.c:303
> > cpu_startup_entry+0x24/0x28 kernel/sched/idle.c:400
> > kernel_init+0x0/0x290 init/main.c:729
> > start_kernel+0x0/0x620 init/main.c:890
> > start_kernel+0x450/0x620 init/main.c:1145
> > __primary_switched+0xb4/0xbc arch/arm64/kernel/head.S:471
> > Code: 94001384 aa0003f7 aa1303e0 9400144a (f94002f8)
> > ---[ end trace 0000000000000000 ]---
> > ----------------
> > Code disassembly (best guess):
> > 0: 94001384 bl 0x4e10
> > 4: aa0003f7 mov x23, x0
> > 8: aa1303e0 mov x0, x19
> > c: 9400144a bl 0x5134
> > * 10: f94002f8 ldr x24, [x23] <-- trapping instruction
> >
> >
> > ---
> > This report is generated by a bot. It may contain errors.
> > See https://goo.gl/tpsmEJ for more information about syzbot.
> > syzbot engineers can be reached at syzkaller@googlegroups.com.
> >
> > syzbot will keep track of this issue. See:
> > https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
> > syzbot can test patches for this issue, for details see:
> > https://goo.gl/tpsmEJ#testing-patches
>
> #syz test: https://github.com/f0rm2l1n/linux-fix.git master
#syz dup: WARNING in nci_send_cmd
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2022-11-30 9:29 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2022-11-16 10:52 [syzbot] BUG: unable to handle kernel NULL pointer dereference in nci_cmd_timer syzbot
2022-11-16 13:11 ` Lin Ma
2022-11-16 18:17 ` syzbot
2022-11-30 9:28 ` Dmitry Vyukov
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