From: syzbot <syzbot+d1ae9c954f73570e7b58@syzkaller.appspotmail.com>
To: anna-maria@linutronix.de, frederic@kernel.org,
linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
syzkaller-bugs@googlegroups.com, tglx@linutronix.de
Subject: [syzbot] [kernel?] WARNING in hrtimer_forward (2)
Date: Mon, 08 Apr 2024 19:46:27 -0700 [thread overview]
Message-ID: <000000000000b77a880615a0ed2a@google.com> (raw)
Hello,
syzbot found the following issue on:
HEAD commit: 443574b03387 riscv, bpf: Fix kfunc parameters incompatibil..
git tree: bpf
console output: https://syzkaller.appspot.com/x/log.txt?x=1579f7b1180000
kernel config: https://syzkaller.appspot.com/x/.config?x=6fb1be60a193d440
dashboard link: https://syzkaller.appspot.com/bug?extid=d1ae9c954f73570e7b58
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/3f355021a085/disk-443574b0.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/44cf4de7472a/vmlinux-443574b0.xz
kernel image: https://storage.googleapis.com/syzbot-assets/a99a36c7ad65/bzImage-443574b0.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+d1ae9c954f73570e7b58@syzkaller.appspotmail.com
------------[ cut here ]------------
WARNING: CPU: 1 PID: 11239 at kernel/time/hrtimer.c:1053 hrtimer_forward+0x210/0x2d0 kernel/time/hrtimer.c:1053
Modules linked in:
CPU: 1 PID: 11239 Comm: syz-executor.1 Not tainted 6.8.0-syzkaller-05236-g443574b03387 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:hrtimer_forward+0x210/0x2d0 kernel/time/hrtimer.c:1053
Code: 00 49 89 1e 48 8b 04 24 eb 07 e8 2b a4 12 00 31 c0 48 83 c4 30 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc e8 11 a4 12 00 90 <0f> 0b 90 eb e0 4c 89 f0 31 d2 49 f7 f4 48 89 04 24 49 89 c6 4d 0f
RSP: 0018:ffffc90000a08bf8 EFLAGS: 00010246
RAX: ffffffff81824c5f RBX: 0000000000000001 RCX: ffff88805fe18000
RDX: 0000000000000100 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000003636b41721 R08: ffffffff81824af3 R09: 1ffffffff1f0d5cd
R10: dffffc0000000000 R11: ffffffff81353f80 R12: 00000000061a8000
R13: ffff88805e27ef38 R14: 00000000cb354006 R15: 1ffff1100bc4fde3
FS: 00007f4b92fa26c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7730ed5690 CR3: 0000000047bcc000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
<IRQ>
hrtimer_forward_now include/linux/hrtimer.h:355 [inline]
mac80211_hwsim_beacon+0x192/0x1f0 drivers/net/wireless/virtual/mac80211_hwsim.c:2335
__run_hrtimer kernel/time/hrtimer.c:1692 [inline]
__hrtimer_run_queues+0x595/0xd00 kernel/time/hrtimer.c:1756
hrtimer_run_softirq+0x19a/0x2c0 kernel/time/hrtimer.c:1773
__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:bpf_prog_is_offloaded include/linux/bpf.h:2972 [inline]
RIP: 0010:do_check+0x7a14/0x10740 kernel/bpf/verifier.c:17669
Code: 00 00 00 00 00 fc ff df 48 8b 1b b8 fa 00 00 00 48 01 c3 48 89 d8 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 da 4d 00 00 0f b6 1b <31> ff 89 de e8 a3 0a eb ff 85 db 74 5a 48 ba 00 00 00 00 00 fc ff
RSP: 0018:ffffc90005336dc0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000040000
RDX: ffffc9000c2c8000 RSI: 000000000000a51a RDI: 000000000000a51b
RBP: ffffc90005337120 R08: ffffffff81a9e50d R09: 1ffff1100bfc3000
R10: dffffc0000000000 R11: ffffed100bfc3001 R12: dffffc0000000000
R13: 0000000000000000 R14: ffffc90005337080 R15: ffff88805fe18000
do_check_common+0x14bd/0x1dd0 kernel/bpf/verifier.c:20508
do_check_main kernel/bpf/verifier.c:20599 [inline]
bpf_check+0x126eb/0x18fe0 kernel/bpf/verifier.c:21269
bpf_prog_load+0x1667/0x20f0 kernel/bpf/syscall.c:2895
__sys_bpf+0x4ee/0x810 kernel/bpf/syscall.c:5631
__do_sys_bpf kernel/bpf/syscall.c:5738 [inline]
__se_sys_bpf kernel/bpf/syscall.c:5736 [inline]
__x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5736
do_syscall_64+0xfb/0x240
entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7f4b9227de69
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f4b92fa20c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f4b923ac120 RCX: 00007f4b9227de69
RDX: 0000000000000048 RSI: 00000000200054c0 RDI: 0000000000000005
RBP: 00007f4b922ca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f4b923ac120 R15: 00007ffdcb39eb48
</TASK>
----------------
Code disassembly (best guess), 7 bytes skipped:
0: df 48 8b fisttps -0x75(%rax)
3: 1b b8 fa 00 00 00 sbb 0xfa(%rax),%edi
9: 48 01 c3 add %rax,%rbx
c: 48 89 d8 mov %rbx,%rax
f: 48 c1 e8 03 shr $0x3,%rax
13: 42 0f b6 04 20 movzbl (%rax,%r12,1),%eax
18: 84 c0 test %al,%al
1a: 0f 85 da 4d 00 00 jne 0x4dfa
20: 0f b6 1b movzbl (%rbx),%ebx
* 23: 31 ff xor %edi,%edi <-- trapping instruction
25: 89 de mov %ebx,%esi
27: e8 a3 0a eb ff call 0xffeb0acf
2c: 85 db test %ebx,%ebx
2e: 74 5a je 0x8a
30: 48 rex.W
31: ba 00 00 00 00 mov $0x0,%edx
36: 00 fc add %bh,%ah
38: ff .byte 0xff
---
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
next reply other threads:[~2024-04-09 2:46 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-09 2:46 syzbot [this message]
2024-04-09 10:46 ` [syzbot] [kernel?] WARNING in hrtimer_forward (2) Thomas Gleixner
2024-04-09 22:51 ` Hillf Danton
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=000000000000b77a880615a0ed2a@google.com \
--to=syzbot+d1ae9c954f73570e7b58@syzkaller.appspotmail.com \
--cc=anna-maria@linutronix.de \
--cc=frederic@kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=netdev@vger.kernel.org \
--cc=syzkaller-bugs@googlegroups.com \
--cc=tglx@linutronix.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.