riscv/fixes test error: kernel panic: Kernel stack overflow
syzbot
syzbotHello,
syzbot found the following issue on:
HEAD commit: 7c1e5b9690b0 riscv: Disable preemption while handling PR_R.. git tree: git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git fixes console output: https://syzkaller.appspot.com/x/log.txt?x=1618e900580000 kernel config: https://syzkaller.appspot.com/x/.config?x=c79e90d7b2f5b364 dashboard link: https://syzkaller.appspot.com/bug?extid=ba9eac24453387a9d502 compiler: riscv64-linux-gnu-gcc (Debian 12.2.0-13) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 userspace arch: riscv64
Downloadable assets:
disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/a741b348759c/non_bootable_disk-7c1e5b96.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/71b65c326093/vmlinux-7c1e5b96.xz
kernel image: https://storage.googleapis.com/syzbot-assets/4110f50eed32/Image-7c1e5b96.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
s11: ff60000011ee5b20 t3 : ffffffffffffffff t4 : fffffffef12c91f0 t5 : ffffffff89655e40 t6 : 1fec0000023dcb6d
status: 0000000200000100 badaddr: ff20000000087fe8 cause: 000000000000000f
Kernel panic - not syncing: Kernel stack overflow CPU: 0 UID: 0 PID: 16 Comm: ksoftirqd/0 Not tainted 6.11.0-rc2-syzkaller-g7c1e5b9690b0 #0 Hardware name: riscv-virtio,qemu (DT) Call Trace: [<ffffffff80010216>] dump_backtrace+0x2e/0x3c arch/riscv/kernel/stacktrace.c:130 [<ffffffff85edbd86>] show_stack+0x34/0x40 arch/riscv/kernel/stacktrace.c:136 [<ffffffff85f3735e>] __dump_stack lib/dump_stack.c:93 [inline] [<ffffffff85f3735e>] dump_stack_lvl+0x108/0x196 lib/dump_stack.c:119 [<ffffffff85f37408>] dump_stack+0x1c/0x24 lib/dump_stack.c:128 [<ffffffff85edc94a>] panic+0x388/0x806 kernel/panic.c:348 [<ffffffff8000fcee>] handle_bad_stack+0xe4/0x10c arch/riscv/kernel/traps.c:427 [<ffffffff8022b788>] __bfs_backwards kernel/locking/lockdep.c:1843 [inline] [<ffffffff8022b788>] check_irq_usage+0x1d6/0x1466 kernel/locking/lockdep.c:2803
SMP: stopping secondary CPUs
Rebooting in 86400 seconds..
---
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Alexandre Ghiti
reviewerQuoted 58 lines · syzbot
Hello,
syzbot found the following issue on:
HEAD commit: 7c1e5b9690b0 riscv: Disable preemption while handling PR_R.. git tree: git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git fixes console output: https://syzkaller.appspot.com/x/log.txt?x=1618e900580000 kernel config: https://syzkaller.appspot.com/x/.config?x=c79e90d7b2f5b364 dashboard link: https://syzkaller.appspot.com/bug?extid=ba9eac24453387a9d502 compiler: riscv64-linux-gnu-gcc (Debian 12.2.0-13) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 userspace arch: riscv64Downloadable assets:
disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/a741b348759c/non_bootable_disk-7c1e5b96.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/71b65c326093/vmlinux-7c1e5b96.xz
kernel image: https://storage.googleapis.com/syzbot-assets/4110f50eed32/Image-7c1e5b96.xzIMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by [email protected]s11:
ff60000011ee5b20t3 : ffffffffffffffff t4 :fffffffef12c91f0t5 :ffffffff89655e40t6 :1fec0000023dcb6d
status: 0000000200000100 badaddr:ff20000000087fe8cause:000000000000000fKernel panic - not syncing: Kernel stack overflow CPU: 0 UID: 0 PID: 16 Comm: ksoftirqd/0 Not tainted 6.11.0-rc2-syzkaller-g7c1e5b9690b0 #0 Hardware name: riscv-virtio,qemu (DT) Call Trace: [<ffffffff80010216>] dump_backtrace+0x2e/0x3c arch/riscv/kernel/stacktrace.c:130 [<ffffffff85edbd86>] show_stack+0x34/0x40 arch/riscv/kernel/stacktrace.c:136 [<ffffffff85f3735e>] __dump_stack lib/dump_stack.c:93 [inline] [<ffffffff85f3735e>] dump_stack_lvl+0x108/0x196 lib/dump_stack.c:119 [<ffffffff85f37408>] dump_stack+0x1c/0x24 lib/dump_stack.c:128 [<ffffffff85edc94a>] panic+0x388/0x806 kernel/panic.c:348 [<ffffffff8000fcee>] handle_bad_stack+0xe4/0x10c arch/riscv/kernel/traps.c:427 [<ffffffff8022b788>] __bfs_backwards kernel/locking/lockdep.c:1843 [inline] [<ffffffff8022b788>] check_irq_usage+0x1d6/0x1466 kernel/locking/lockdep.c:2803SMP: stopping secondary CPUs
Rebooting in 86400 seconds..---
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 [email protected].syzbot will keep track of this issue. See:
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(See the list of subsystem names on the web dashboard)If the report is a duplicate of another one, reply with:
#syz dup: exact-subject-of-another-report
Quoted 7 lines
If you want to undo deduplication, reply with:
#syz undup_______________________________________________
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So this one should be fixed by https://lore.kernel.org/all/[email protected]/T/