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Message-ID: <0000000000001734c60615c2c35e@google.com> Date: Wed, 10 Apr 2024 12:08:21 -0700 From: syzbot <syzbot+85c55d5ba79e862d9f10@...kaller.appspotmail.com> To: anna-maria@...utronix.de, frederic@...nel.org, linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com, tglx@...utronix.de Subject: [syzbot] [kernel?] WARNING in __mod_timer (2) Hello, syzbot found the following issue on: HEAD commit: fe46a7dd189e Merge tag 'sound-6.9-rc1' of git://git.kernel.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=16e12923180000 kernel config: https://syzkaller.appspot.com/x/.config?x=4d90a36f0cab495a dashboard link: https://syzkaller.appspot.com/bug?extid=85c55d5ba79e862d9f10 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/f6c04726a2ae/disk-fe46a7dd.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/09c26ce901ea/vmlinux-fe46a7dd.xz kernel image: https://storage.googleapis.com/syzbot-assets/134acf7f5322/bzImage-fe46a7dd.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+85c55d5ba79e862d9f10@...kaller.appspotmail.com ------------[ cut here ]------------ raw_local_irq_restore() called with IRQs enabled WARNING: CPU: 1 PID: 9339 at kernel/locking/irqflag-debug.c:10 warn_bogus_irq_restore+0x29/0x40 kernel/locking/irqflag-debug.c:10 Modules linked in: CPU: 1 PID: 9339 Comm: syz-executor.1 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:warn_bogus_irq_restore+0x29/0x40 kernel/locking/irqflag-debug.c:10 Code: 90 f3 0f 1e fa 90 80 3d bd 16 05 04 00 74 06 90 c3 cc cc cc cc c6 05 ae 16 05 04 01 90 48 c7 c7 e0 b9 aa 8b e8 88 34 ec f5 90 <0f> 0b 90 90 90 c3 cc cc cc cc 66 2e 0f 1f 84 00 00 00 00 00 0f 1f RSP: 0018:ffffc90000a089b8 EFLAGS: 00010246 RAX: f1cc9c4c319efc00 RBX: 1ffff9200014113c RCX: ffff888021afda00 RDX: 0000000080000101 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000a08a50 R08: ffffffff8157cb22 R09: 1ffff110172a51a2 R10: dffffc0000000000 R11: ffffed10172a51a3 R12: dffffc0000000000 R13: 1ffff92000141138 R14: ffffc90000a089e0 R15: 0000000000000246 FS: 00005555950bb480(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b31f21000 CR3: 000000002cc6c000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <IRQ> __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] _raw_spin_unlock_irqrestore+0x120/0x140 kernel/locking/spinlock.c:194 __mod_timer+0xb89/0xeb0 kernel/time/timer.c:1186 call_timer_fn+0x17e/0x600 kernel/time/timer.c:1792 expire_timers kernel/time/timer.c:1843 [inline] __run_timers kernel/time/timer.c:2408 [inline] __run_timer_base+0x66a/0x8e0 kernel/time/timer.c:2419 run_timer_base kernel/time/timer.c:2428 [inline] run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2438 __do_softirq+0x2bc/0x943 kernel/softirq.c:554 invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu+0xf2/0x1c0 kernel/softirq.c:633 irq_exit_rcu+0x9/0x30 kernel/softirq.c:645 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:sched_update_worker kernel/sched/core.c:6799 [inline] RIP: 0010:schedule+0x182/0x320 kernel/sched/core.c:6829 Code: 23 00 74 d4 48 89 ef e8 2c 33 80 f6 eb ca 4c 8d 75 2c 4d 89 f5 49 c1 ed 03 43 0f b6 44 25 00 84 c0 0f 85 06 01 00 00 41 8b 06 <a9> 30 00 00 20 74 7c a9 00 00 00 20 74 5c 49 89 ef 49 81 c7 70 12 RSP: 0018:ffffc900034e7be8 EFLAGS: 00000246 RAX: 0000000000400040 RBX: 1ffff1100435fb40 RCX: 0000000000000001 RDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000000001 RBP: ffff888021afda00 R08: ffff888062cc0003 R09: 1ffff1100c598000 R10: dffffc0000000000 R11: ffffed100c598001 R12: dffffc0000000000 R13: 1ffff1100435fb45 R14: ffff888021afda2c R15: ffff888021afec70 do_nanosleep+0x197/0x600 kernel/time/hrtimer.c:2051 hrtimer_nanosleep+0x227/0x470 kernel/time/hrtimer.c:2104 __do_sys_clock_nanosleep kernel/time/posix-timers.c:1396 [inline] __se_sys_clock_nanosleep+0x32b/0x3c0 kernel/time/posix-timers.c:1373 do_syscall_64+0xfb/0x240 entry_SYSCALL_64_after_hwframe+0x6d/0x75 RIP: 0033:0x7fef2e8a9275 Code: 24 0c 89 3c 24 48 89 4c 24 18 e8 f6 b9 ff ff 4c 8b 54 24 18 48 8b 54 24 10 41 89 c0 8b 74 24 0c 8b 3c 24 b8 e6 00 00 00 0f 05 <44> 89 c7 48 89 04 24 e8 4f ba ff ff 48 8b 04 24 48 83 c4 28 f7 d8 RSP: 002b:00007ffead8be8f0 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6 RAX: ffffffffffffffda RBX: 00007fef2e9abf80 RCX: 00007fef2e8a9275 RDX: 00007ffead8be930 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007fef2e9ad980 R08: 0000000000000000 R09: 00007fef2f52e0b0 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000038234 R13: ffffffffffffffff R14: 00007fef2e400000 R15: 0000000000037ef3 </TASK> ---------------- Code disassembly (best guess): 0: 23 00 and (%rax),%eax 2: 74 d4 je 0xffffffd8 4: 48 89 ef mov %rbp,%rdi 7: e8 2c 33 80 f6 call 0xf6803338 c: eb ca jmp 0xffffffd8 e: 4c 8d 75 2c lea 0x2c(%rbp),%r14 12: 4d 89 f5 mov %r14,%r13 15: 49 c1 ed 03 shr $0x3,%r13 19: 43 0f b6 44 25 00 movzbl 0x0(%r13,%r12,1),%eax 1f: 84 c0 test %al,%al 21: 0f 85 06 01 00 00 jne 0x12d 27: 41 8b 06 mov (%r14),%eax * 2a: a9 30 00 00 20 test $0x20000030,%eax <-- trapping instruction 2f: 74 7c je 0xad 31: a9 00 00 00 20 test $0x20000000,%eax 36: 74 5c je 0x94 38: 49 89 ef mov %rbp,%r15 3b: 49 rex.WB 3c: 81 .byte 0x81 3d: c7 (bad) 3e: 70 12 jo 0x52 --- 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@...glegroups.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
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