From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f71.google.com (mail-io1-f71.google.com [209.85.166.71]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 953581D2F6B for ; Fri, 6 Sep 2024 15:36:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.71 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725636986; cv=none; b=cr7kzkLwEIRXbLQd6h7wMUI2dB1m5Vdov4a8XRWVUcRdkf4tFfyRgSgySd9H9pOmmjau2IoWJ09ys/STmk6jYLJ8kvIadZcYd3pnxV9qd6DHrGYN47i8dLmjpAj5cuLn9VbE0EqWAF0cwFq04/ZHJq3Lc57kWmZG/noKLtqwAmI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725636986; c=relaxed/simple; bh=OPS4iqFe5GeDdMC+ARtPuhitFOoVsPVpAtChQq2pA68=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=Httb9nsP7U0tl4tfC0W+ISaULFpxnBLZuQVWLfFl4YLU9B+145nehPGQldtpL+YIyPAXemz5hZ8noWrGGly4jfoQol1b/XWOMYVUTNTnIiPycFGvKLI8lvtdSwWLta0MMS6xhLigQ9a9sosrojBBudJLtc1Eq1CoKdv0NQ69hEs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.166.71 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-io1-f71.google.com with SMTP id ca18e2360f4ac-82a20e57f6aso479215039f.0 for ; Fri, 06 Sep 2024 08:36:24 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1725636984; x=1726241784; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=Qhsxrzk59M5RAnR+rkQ1MqCY64GC8DWn1ca0TgksBAE=; b=d/qftGslYsKTo3GoRnJas8yAIqaZR94Y7JdG/7tv+0Isa1ngUN9BCl0OXhuIelMgCF cXa0Is61eGkr8QlIaZAD1kLWejY4stPX8tSvpN/SPS7gR53alYjeX58OBSTXxuYA+K9c ocOx8PgCabI8StnK82fxFT0YHaFSPchPyTPLvIkpSldhd+Td4kxBENE+Y/PDbqc3CWOA NSXTYHXhuOe0EoVW/XJx5bMAZ4RfKuX51jHbWO4xhCYOh5vdSYEqklAHjVDihN+I+HXx tx4tpAndrRNrXaS8VWwgREakp1znU31hQjsbf9LOiWBgSfOk3TVsws2d5DEbyLMtiSx/ Sc/Q== X-Gm-Message-State: AOJu0Yy3RrlEkgjVEqGTf1G/3+86qQXXJSzgGQdBfg1Sp9kZkmAEEn/A MekjEfETraYz4LGYNd7Mc60r6UP7ivUTPVXn82+3bLISmdMd8Ejz+a9VZh/vnvKWXm8Fu+8XPFS Fq57CjEU7MXrf8Oq2Fs34j5hs0FMeQBeq/asbN/PPpREI7FURpOYTd8g= X-Google-Smtp-Source: AGHT+IFsa7dSgy+gYYFbGqogO7QYYXiSIyCZHXGU3yVLz8vt/+QZ5/hVp/jHhj0LC1z4mlFw9vdh2JlULasCXWlRRNnW5D2F+xx1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6638:2710:b0:4ce:928f:adb1 with SMTP id 8926c6da1cb9f-4d084eafe28mr250282173.2.1725636983718; Fri, 06 Sep 2024 08:36:23 -0700 (PDT) Date: Fri, 06 Sep 2024 08:36:23 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000006d27bb0621752b84@google.com> Subject: [syzbot] [kernel?] possible deadlock in __run_timer_base From: syzbot To: linux-kernel@vger.kernel.org, luto@kernel.org, netdev@vger.kernel.org, peterz@infradead.org, syzkaller-bugs@googlegroups.com, tglx@linutronix.de Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: b408473ea01b bpf: Fix a crash when btf_parse_base() return.. git tree: bpf console output: https://syzkaller.appspot.com/x/log.txt?x=10840739980000 kernel config: https://syzkaller.appspot.com/x/.config?x=eb19570bf3f0c14f dashboard link: https://syzkaller.appspot.com/bug?extid=b3f9c9d700eadf2be3a9 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/64d6ccd089c0/disk-b408473e.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/d1d0d9431630/vmlinux-b408473e.xz kernel image: https://storage.googleapis.com/syzbot-assets/fb7ddb3b7b95/bzImage-b408473e.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+b3f9c9d700eadf2be3a9@syzkaller.appspotmail.com ------------[ cut here ]------------ ====================================================== WARNING: possible circular locking dependency detected 6.11.0-rc4-syzkaller-gb408473ea01b #0 Not tainted ------------------------------------------------------ syz.2.317/6997 is trying to acquire lock: ffffffff8e813cb8 ((console_sem).lock){-.-.}-{2:2}, at: down_trylock+0x20/0xa0 kernel/locking/semaphore.c:139 but task is already holding lock: ffff8880b892a718 (&base->lock){-.-.}-{2:2}, at: expire_timers kernel/time/timer.c:1839 [inline] ffff8880b892a718 (&base->lock){-.-.}-{2:2}, at: __run_timers kernel/time/timer.c:2417 [inline] ffff8880b892a718 (&base->lock){-.-.}-{2:2}, at: __run_timer_base+0x69d/0x8e0 kernel/time/timer.c:2428 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (&base->lock){-.-.}-{2:2}: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5759 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162 lock_timer_base+0x112/0x240 kernel/time/timer.c:1051 __mod_timer+0x1ca/0xeb0 kernel/time/timer.c:1132 queue_delayed_work_on+0x1ca/0x390 kernel/workqueue.c:2554 psi_task_change+0xfd/0x280 kernel/sched/psi.c:913 psi_enqueue kernel/sched/stats.h:143 [inline] enqueue_task+0x2aa/0x300 kernel/sched/core.c:1975 activate_task kernel/sched/core.c:2009 [inline] wake_up_new_task+0x563/0xc30 kernel/sched/core.c:4689 kernel_clone+0x4ee/0x8f0 kernel/fork.c:2831 user_mode_thread+0x132/0x1a0 kernel/fork.c:2878 rest_init+0x23/0x300 init/main.c:712 start_kernel+0x47a/0x500 init/main.c:1103 x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:507 x86_64_start_kernel+0x9f/0xa0 arch/x86/kernel/head64.c:488 common_startup_64+0x13e/0x147 -> #2 (&rq->__lock){-.-.}-{2:2}: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5759 _raw_spin_lock_nested+0x31/0x40 kernel/locking/spinlock.c:378 raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:560 raw_spin_rq_lock kernel/sched/sched.h:1415 [inline] rq_lock kernel/sched/sched.h:1714 [inline] task_fork_fair+0x61/0x1e0 kernel/sched/fair.c:12710 sched_cgroup_fork+0x37c/0x410 kernel/sched/core.c:4633 copy_process+0x224f/0x3e10 kernel/fork.c:2502 kernel_clone+0x226/0x8f0 kernel/fork.c:2800 user_mode_thread+0x132/0x1a0 kernel/fork.c:2878 rest_init+0x23/0x300 init/main.c:712 start_kernel+0x47a/0x500 init/main.c:1103 x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:507 x86_64_start_kernel+0x9f/0xa0 arch/x86/kernel/head64.c:488 common_startup_64+0x13e/0x147 -> #1 (&p->pi_lock){-.-.}-{2:2}: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5759 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162 class_raw_spinlock_irqsave_constructor include/linux/spinlock.h:551 [inline] try_to_wake_up+0xb0/0x1470 kernel/sched/core.c:4051 up+0x72/0x90 kernel/locking/semaphore.c:191 __up_console_sem kernel/printk/printk.c:340 [inline] __console_unlock kernel/printk/printk.c:2801 [inline] console_unlock+0x22f/0x4d0 kernel/printk/printk.c:3120 vprintk_emit+0x5dc/0x7c0 kernel/printk/printk.c:2348 dev_vprintk_emit+0x2ae/0x330 drivers/base/core.c:4912 dev_printk_emit+0xdd/0x120 drivers/base/core.c:4923 _dev_warn+0x122/0x170 drivers/base/core.c:4979 firmware_fallback_sysfs+0x4cf/0x9e0 drivers/base/firmware_loader/fallback.c:233 _request_firmware+0xcf5/0x12b0 drivers/base/firmware_loader/main.c:914 request_firmware_work_func+0x12a/0x280 drivers/base/firmware_loader/main.c:1165 process_one_work kernel/workqueue.c:3231 [inline] process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312 worker_thread+0x86d/0xd40 kernel/workqueue.c:3390 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 -> #0 ((console_sem).lock){-.-.}-{2:2}: check_prev_add kernel/locking/lockdep.c:3133 [inline] check_prevs_add kernel/locking/lockdep.c:3252 [inline] validate_chain+0x18e0/0x5900 kernel/locking/lockdep.c:3868 __lock_acquire+0x137a/0x2040 kernel/locking/lockdep.c:5142 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5759 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162 down_trylock+0x20/0xa0 kernel/locking/semaphore.c:139 __down_trylock_console_sem+0x109/0x250 kernel/printk/printk.c:323 console_trylock kernel/printk/printk.c:2754 [inline] console_trylock_spinning kernel/printk/printk.c:1958 [inline] vprintk_emit+0x2aa/0x7c0 kernel/printk/printk.c:2347 _printk+0xd5/0x120 kernel/printk/printk.c:2373 __report_bug lib/bug.c:195 [inline] report_bug+0x346/0x500 lib/bug.c:219 handle_bug+0x3e/0x70 arch/x86/kernel/traps.c:239 exc_invalid_op+0x1a/0x50 arch/x86/kernel/traps.c:260 asm_exc_invalid_op+0x1a/0x20 arch/x86/include/asm/idtentry.h:621 expire_timers kernel/time/timer.c:1830 [inline] __run_timers kernel/time/timer.c:2417 [inline] __run_timer_base+0x6f4/0x8e0 kernel/time/timer.c:2428 run_timer_base kernel/time/timer.c:2437 [inline] run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2447 handle_softirqs+0x2c4/0x970 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649 instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline] sysvec_irq_work+0xa3/0xc0 arch/x86/kernel/irq_work.c:17 asm_sysvec_irq_work+0x1a/0x20 arch/x86/include/asm/idtentry.h:738 preempt_schedule_irq+0xf6/0x1c0 kernel/sched/core.c:6851 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 check_kcov_mode kernel/kcov.c:182 [inline] write_comp_data kernel/kcov.c:245 [inline] __sanitizer_cov_trace_const_cmp4+0x2f/0x90 kernel/kcov.c:313 number+0x134/0xf90 lib/vsprintf.c:473 vsnprintf+0x1542/0x1da0 lib/vsprintf.c:2890 vscnprintf+0x42/0x90 lib/vsprintf.c:2930 bpf_verifier_vlog+0x41/0x860 kernel/bpf/log.c:66 verbose+0x110/0x190 kernel/bpf/verifier.c:361 print_bpf_insn+0xd6a/0x2400 kernel/bpf/disasm.c:320 backtrack_insn kernel/bpf/verifier.c:3615 [inline] __mark_chain_precision+0x1a9b/0x7520 kernel/bpf/verifier.c:4272 mark_chain_precision kernel/bpf/verifier.c:4375 [inline] check_cond_jmp_op+0x26c6/0x3c50 kernel/bpf/verifier.c:15212 do_check+0x9a63/0x104f0 kernel/bpf/verifier.c:18110 do_check_common+0x14bd/0x1dd0 kernel/bpf/verifier.c:20916 do_check_main kernel/bpf/verifier.c:21007 [inline] bpf_check+0x144e1/0x19630 kernel/bpf/verifier.c:21681 bpf_prog_load+0x1667/0x20f0 kernel/bpf/syscall.c:2908 __sys_bpf+0x4ee/0x810 kernel/bpf/syscall.c:5710 __do_sys_bpf kernel/bpf/syscall.c:5817 [inline] __se_sys_bpf kernel/bpf/syscall.c:5815 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5815 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f other info that might help us debug this: Chain exists of: (console_sem).lock --> &rq->__lock --> &base->lock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&base->lock); lock(&rq->__lock); lock(&base->lock); lock((console_sem).lock); *** DEADLOCK *** 1 lock held by syz.2.317/6997: #0: ffff8880b892a718 (&base->lock){-.-.}-{2:2}, at: expire_timers kernel/time/timer.c:1839 [inline] #0: ffff8880b892a718 (&base->lock){-.-.}-{2:2}, at: __run_timers kernel/time/timer.c:2417 [inline] #0: ffff8880b892a718 (&base->lock){-.-.}-{2:2}, at: __run_timer_base+0x69d/0x8e0 kernel/time/timer.c:2428 stack backtrace: CPU: 1 UID: 0 PID: 6997 Comm: syz.2.317 Not tainted 6.11.0-rc4-syzkaller-gb408473ea01b #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 Call Trace: __dump_stack lib/dump_stack.c:93 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119 check_noncircular+0x36a/0x4a0 kernel/locking/lockdep.c:2186 check_prev_add kernel/locking/lockdep.c:3133 [inline] check_prevs_add kernel/locking/lockdep.c:3252 [inline] validate_chain+0x18e0/0x5900 kernel/locking/lockdep.c:3868 __lock_acquire+0x137a/0x2040 kernel/locking/lockdep.c:5142 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5759 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162 down_trylock+0x20/0xa0 kernel/locking/semaphore.c:139 __down_trylock_console_sem+0x109/0x250 kernel/printk/printk.c:323 console_trylock kernel/printk/printk.c:2754 [inline] console_trylock_spinning kernel/printk/printk.c:1958 [inline] vprintk_emit+0x2aa/0x7c0 kernel/printk/printk.c:2347 _printk+0xd5/0x120 kernel/printk/printk.c:2373 __report_bug lib/bug.c:195 [inline] report_bug+0x346/0x500 lib/bug.c:219 handle_bug+0x3e/0x70 arch/x86/kernel/traps.c:239 exc_invalid_op+0x1a/0x50 arch/x86/kernel/traps.c:260 asm_exc_invalid_op+0x1a/0x20 arch/x86/include/asm/idtentry.h:621 RIP: 0010:expire_timers kernel/time/timer.c:1830 [inline] RIP: 0010:__run_timers kernel/time/timer.c:2417 [inline] RIP: 0010:__run_timer_base+0x6f4/0x8e0 kernel/time/timer.c:2428 Code: 24 38 42 80 3c 30 00 74 08 4c 89 ef e8 85 90 7a 00 4d 8b 7d 00 4d 85 ff 74 33 e8 87 46 13 00 e9 dd fe ff ff e8 7d 46 13 00 90 <0f> 0b 90 eb ae 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 25 ff ff ff RSP: 0018:ffffc90000a18cc0 EFLAGS: 00010046 RAX: ffffffff818044c3 RBX: ffff8880331e7c28 RCX: ffff888061e71e00 RDX: 0000000000000100 RSI: ffffffff8c608aa0 RDI: ffffffff8c608a60 RBP: ffffc90000a18e10 R08: ffffffff818080f4 R09: 1ffffffff2030c3d R10: dffffc0000000000 R11: fffffbfff2030c3e R12: 0000000000000000 R13: ffffc90000a18d60 R14: dffffc0000000000 R15: ffff8880331e7c10 run_timer_base kernel/time/timer.c:2437 [inline] run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2447 handle_softirqs+0x2c4/0x970 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649 instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline] sysvec_irq_work+0xa3/0xc0 arch/x86/kernel/irq_work.c:17 asm_sysvec_irq_work+0x1a/0x20 arch/x86/include/asm/idtentry.h:738 RIP: 0010:preempt_schedule_irq+0xf6/0x1c0 kernel/sched/core.c:6851 Code: 89 f5 49 c1 ed 03 eb 0d 48 f7 03 08 00 00 00 0f 84 8b 00 00 00 bf 01 00 00 00 e8 a5 61 a1 f5 e8 30 50 d9 f5 fb bf 01 00 00 00 55 ad ff ff 43 80 7c 3d 00 00 74 08 4c 89 f7 e8 85 36 39 f6 48 RSP: 0018:ffffc900033c6340 EFLAGS: 00000286 RAX: 4be1ae6c97110f00 RBX: 1ffff92000678c70 RCX: ffffffff9a337903 RDX: dffffc0000000000 RSI: ffffffff8c0ad560 RDI: 0000000000000001 RBP: ffffc900033c63f0 R08: ffffffff901861ef R09: 1ffffffff2030c3d R10: dffffc0000000000 R11: fffffbfff2030c3e R12: 1ffff92000678c68 R13: 1ffff92000678c6c R14: ffffc900033c6360 R15: dffffc0000000000 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:check_kcov_mode kernel/kcov.c:184 [inline] RIP: 0010:write_comp_data kernel/kcov.c:245 [inline] RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x2f/0x90 kernel/kcov.c:313 Code: 8b 04 24 65 48 8b 14 25 00 d7 03 00 65 8b 05 70 47 70 7e 25 00 01 ff 00 74 10 3d 00 01 00 00 75 5b 83 ba 1c 16 00 00 00 74 52 <8b> 82 f8 15 00 00 83 f8 03 75 47 48 8b 8a 00 16 00 00 44 8b 8a fc RSP: 0018:ffffc900033c64b8 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffff10300000020f RCX: ffff888061e71e00 RDX: ffff888061e71e00 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc900033c65d0 R08: ffffffff8bb28764 R09: 0000000000000000 R10: ffffc900033c6540 R11: fffff52000678cab R12: 00000000ffff1030 R13: 0000000000000018 R14: ffff10300000020f R15: ffff8880686f869d number+0x134/0xf90 lib/vsprintf.c:473 vsnprintf+0x1542/0x1da0 lib/vsprintf.c:2890 vscnprintf+0x42/0x90 lib/vsprintf.c:2930 bpf_verifier_vlog+0x41/0x860 kernel/bpf/log.c:66 verbose+0x110/0x190 kernel/bpf/verifier.c:361 print_bpf_insn+0xd6a/0x2400 kernel/bpf/disasm.c:320 backtrack_insn kernel/bpf/verifier.c:3615 [inline] __mark_chain_precision+0x1a9b/0x7520 kernel/bpf/verifier.c:4272 mark_chain_precision kernel/bpf/verifier.c:4375 [inline] check_cond_jmp_op+0x26c6/0x3c50 kernel/bpf/verifier.c:15212 do_check+0x9a63/0x104f0 kernel/bpf/verifier.c:18110 do_check_common+0x14bd/0x1dd0 kernel/bpf/verifier.c:20916 do_check_main kernel/bpf/verifier.c:21007 [inline] bpf_check+0x144e1/0x19630 kernel/bpf/verifier.c:21681 bpf_prog_load+0x1667/0x20f0 kernel/bpf/syscall.c:2908 __sys_bpf+0x4ee/0x810 kernel/bpf/syscall.c:5710 __do_sys_bpf kernel/bpf/syscall.c:5817 [inline] __se_sys_bpf kernel/bpf/syscall.c:5815 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5815 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f8d12379eb9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f8d130e8038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f8d12515f80 RCX: 00007f8d12379eb9 RDX: 0000000000000023 RSI: 0000000020000300 RDI: 0000000000000005 RBP: 00007f8d123e793e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f8d12515f80 R15: 00007fff44c41278 WARNING: CPU: 1 PID: 6997 at kernel/time/timer.c:1830 expire_timers kernel/time/timer.c:1830 [inline] WARNING: CPU: 1 PID: 6997 at kernel/time/timer.c:1830 __run_timers kernel/time/timer.c:2417 [inline] WARNING: CPU: 1 PID: 6997 at kernel/time/timer.c:1830 __run_timer_base+0x6f4/0x8e0 kernel/time/timer.c:2428 Modules linked in: CPU: 1 UID: 0 PID: 6997 Comm: syz.2.317 Not tainted 6.11.0-rc4-syzkaller-gb408473ea01b #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 RIP: 0010:expire_timers kernel/time/timer.c:1830 [inline] RIP: 0010:__run_timers kernel/time/timer.c:2417 [inline] RIP: 0010:__run_timer_base+0x6f4/0x8e0 kernel/time/timer.c:2428 Code: 24 38 42 80 3c 30 00 74 08 4c 89 ef e8 85 90 7a 00 4d 8b 7d 00 4d 85 ff 74 33 e8 87 46 13 00 e9 dd fe ff ff e8 7d 46 13 00 90 <0f> 0b 90 eb ae 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 25 ff ff ff RSP: 0018:ffffc90000a18cc0 EFLAGS: 00010046 RAX: ffffffff818044c3 RBX: ffff8880331e7c28 RCX: ffff888061e71e00 RDX: 0000000000000100 RSI: ffffffff8c608aa0 RDI: ffffffff8c608a60 RBP: ffffc90000a18e10 R08: ffffffff818080f4 R09: 1ffffffff2030c3d R10: dffffc0000000000 R11: fffffbfff2030c3e R12: 0000000000000000 R13: ffffc90000a18d60 R14: dffffc0000000000 R15: ffff8880331e7c10 FS: 00007f8d130e86c0(0000) GS:ffff8880b8900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000140 CR3: 00000000667c4000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: run_timer_base kernel/time/timer.c:2437 [inline] run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2447 handle_softirqs+0x2c4/0x970 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649 instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline] sysvec_irq_work+0xa3/0xc0 arch/x86/kernel/irq_work.c:17 asm_sysvec_irq_work+0x1a/0x20 arch/x86/include/asm/idtentry.h:738 RIP: 0010:preempt_schedule_irq+0xf6/0x1c0 kernel/sched/core.c:6851 Code: 89 f5 49 c1 ed 03 eb 0d 48 f7 03 08 00 00 00 0f 84 8b 00 00 00 bf 01 00 00 00 e8 a5 61 a1 f5 e8 30 50 d9 f5 fb bf 01 00 00 00 55 ad ff ff 43 80 7c 3d 00 00 74 08 4c 89 f7 e8 85 36 39 f6 48 RSP: 0018:ffffc900033c6340 EFLAGS: 00000286 RAX: 4be1ae6c97110f00 RBX: 1ffff92000678c70 RCX: ffffffff9a337903 RDX: dffffc0000000000 RSI: ffffffff8c0ad560 RDI: 0000000000000001 RBP: ffffc900033c63f0 R08: ffffffff901861ef R09: 1ffffffff2030c3d R10: dffffc0000000000 R11: fffffbfff2030c3e R12: 1ffff92000678c68 R13: 1ffff92000678c6c R14: ffffc900033c6360 R15: dffffc0000000000 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:check_kcov_mode kernel/kcov.c:184 [inline] RIP: 0010:write_comp_data kernel/kcov.c:245 [inline] RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x2f/0x90 kernel/kcov.c:313 Code: 8b 04 24 65 48 8b 14 25 00 d7 03 00 65 8b 05 70 47 70 7e 25 00 01 ff 00 74 10 3d 00 01 00 00 75 5b 83 ba 1c 16 00 00 00 74 52 <8b> 82 f8 15 00 00 83 f8 03 75 47 48 8b 8a 00 16 00 00 44 8b 8a fc RSP: 0018:ffffc900033c64b8 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffff10300000020f RCX: ffff888061e71e00 RDX: ffff888061e71e00 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc900033c65d0 R08: ffffffff8bb28764 R09: 0000000000000000 R10: ffffc900033c6540 R11: fffff52000678cab R12: 00000000ffff1030 R13: 0000000000000018 R14: ffff10300000020f R15: ffff8880686f869d number+0x134/0xf90 lib/vsprintf.c:473 vsnprintf+0x1542/0x1da0 lib/vsprintf.c:2890 vscnprintf+0x42/0x90 lib/vsprintf.c:2930 bpf_verifier_vlog+0x41/0x860 kernel/bpf/log.c:66 verbose+0x110/0x190 kernel/bpf/verifier.c:361 print_bpf_insn+0xd6a/0x2400 kernel/bpf/disasm.c:320 backtrack_insn kernel/bpf/verifier.c:3615 [inline] __mark_chain_precision+0x1a9b/0x7520 kernel/bpf/verifier.c:4272 mark_chain_precision kernel/bpf/verifier.c:4375 [inline] check_cond_jmp_op+0x26c6/0x3c50 kernel/bpf/verifier.c:15212 do_check+0x9a63/0x104f0 kernel/bpf/verifier.c:18110 do_check_common+0x14bd/0x1dd0 kernel/bpf/verifier.c:20916 do_check_main kernel/bpf/verifier.c:21007 [inline] bpf_check+0x144e1/0x19630 kernel/bpf/verifier.c:21681 bpf_prog_load+0x1667/0x20f0 kernel/bpf/syscall.c:2908 __sys_bpf+0x4ee/0x810 kernel/bpf/syscall.c:5710 __do_sys_bpf kernel/bpf/syscall.c:5817 [inline] __se_sys_bpf kernel/bpf/syscall.c:5815 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5815 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f8d12379eb9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f8d130e8038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f8d12515f80 RCX: 00007f8d12379eb9 RDX: 0000000000000023 RSI: 0000000020000300 RDI: 0000000000000005 RBP: 00007f8d123e793e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f8d12515f80 R15: 00007fff44c41278 ---------------- Code disassembly (best guess): 0: 89 f5 mov %esi,%ebp 2: 49 c1 ed 03 shr $0x3,%r13 6: eb 0d jmp 0x15 8: 48 f7 03 08 00 00 00 testq $0x8,(%rbx) f: 0f 84 8b 00 00 00 je 0xa0 15: bf 01 00 00 00 mov $0x1,%edi 1a: e8 a5 61 a1 f5 call 0xf5a161c4 1f: e8 30 50 d9 f5 call 0xf5d95054 24: fb sti 25: bf 01 00 00 00 mov $0x1,%edi * 2a: e8 55 ad ff ff call 0xffffad84 <-- trapping instruction 2f: 43 80 7c 3d 00 00 cmpb $0x0,0x0(%r13,%r15,1) 35: 74 08 je 0x3f 37: 4c 89 f7 mov %r14,%rdi 3a: e8 85 36 39 f6 call 0xf63936c4 3f: 48 rex.W --- This report is generated by a bot. 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