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AJvYcCUYtbi+DfGyd59AYDzM4CD8GZ70AH3Ze+titJtCAe5khwpX2tUHAMnpGE8EHRs8GWmyBQB7aQLSTsNnVNs=@vger.kernel.org X-Gm-Message-State: AOJu0YwTscf8+EczRMbR+Gu9aEw52It/p10kXQRlbTubEgyR+CKbpoLY pE3Tw609R7Fm8EyvvM0/1HzwBouBMb3h117NTMODsEY7keAck23Njfiegw9GOZvEDH7Mu+vm3fq nNPIjDRdjzhnv7TcTrDt+JBDvCXIv2DAuIxYT8OcD7BoyCkuFQt3jF5A= X-Google-Smtp-Source: AGHT+IH2EijF+rbtzm6hg1J64j3GP4Ad3aROxxr8n6TJwsvP5N88AQeTBVYkGaNq4cjQl6e+GpPbUgp0MYNzIuzZEXyjLAjAo1ft Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:13a6:b0:398:39f:8b4d with SMTP id e9e14a558f8ab-3a0848e54afmr128757555ab.5.1726416562101; Sun, 15 Sep 2024 09:09:22 -0700 (PDT) Date: Sun, 15 Sep 2024 09:09:22 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000eb301906222aadc2@google.com> Subject: [syzbot] [riscv?] riscv/fixes test error: kernel panic: Kernel stack overflow From: syzbot To: aou@eecs.berkeley.edu, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, palmer@dabbelt.com, paul.walmsley@sifive.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" 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: 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: Reported-by: syzbot+ba9eac24453387a9d502@syzkaller.appspotmail.com 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: [] dump_backtrace+0x2e/0x3c arch/riscv/kernel/stacktrace.c:130 [] show_stack+0x34/0x40 arch/riscv/kernel/stacktrace.c:136 [] __dump_stack lib/dump_stack.c:93 [inline] [] dump_stack_lvl+0x108/0x196 lib/dump_stack.c:119 [] dump_stack+0x1c/0x24 lib/dump_stack.c:128 [] panic+0x388/0x806 kernel/panic.c:348 [] handle_bad_stack+0xe4/0x10c arch/riscv/kernel/traps.c:427 [] __bfs_backwards kernel/locking/lockdep.c:1843 [inline] [] check_irq_usage+0x1d6/0x1466 kernel/locking/lockdep.c:2803 SMP: 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 syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (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 If you want to undo deduplication, reply with: #syz undup