syzbot


WARNING in process_fd_request

Status: upstream: reported on 2023/04/03 14:54
Labels: block (incorrect?)
Reported-by: syzbot+1d4201dfe9f2386fdc0b@syzkaller.appspotmail.com
First crash: 60d, last: 48d
Discussions (1)
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[syzbot] [block?] WARNING in process_fd_request 0 (1) 2023/04/03 14:54

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 4919 at drivers/block/floppy.c:999 schedule_bh drivers/block/floppy.c:999 [inline]
WARNING: CPU: 1 PID: 4919 at drivers/block/floppy.c:999 process_fd_request+0x6b/0x70 drivers/block/floppy.c:2847
Modules linked in:
CPU: 1 PID: 4919 Comm: kworker/u16:2 Not tainted 6.3.0-rc6-syzkaller-00030-g2c40519251d6 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014
Workqueue: floppy floppy_shutdown
RIP: 0010:schedule_bh drivers/block/floppy.c:999 [inline]
RIP: 0010:process_fd_request+0x6b/0x70 drivers/block/floppy.c:2847
Code: fc 5b bf 08 00 00 00 48 c7 c2 20 70 45 8d 48 8b 35 6a 00 ec 0c 48 c7 05 7f fb eb 0c f0 8f 1c 85 e9 fa 6f 36 fc e8 d5 6c 66 fc <0f> 0b eb ce 90 48 b8 00 00 00 00 00 fc ff df 41 55 49 89 fd 41 54
RSP: 0018:ffffc90003197cf0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: ffff88801a46d7c0 RSI: ffffffff851c6e8b RDI: 0000000000000001
RBP: 0000000000000282 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffffc90003197da8
R13: ffffffff8d4570b0 R14: ffff88801f0d4500 R15: ffff888012489000
FS:  0000000000000000(0000) GS:ffff88802c700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000057c07404 CR3: 00000000724dd000 CR4: 0000000000150ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 floppy_shutdown+0x135/0x230 drivers/block/floppy.c:1889
 process_one_work+0x991/0x15c0 kernel/workqueue.c:2390
 worker_thread+0x669/0x1090 kernel/workqueue.c:2537
 kthread+0x2e8/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets Manager Title
2023/04/12 04:37 upstream 2c40519251d6 49faf98d .config console log report info ci-qemu-upstream-386 WARNING in process_fd_request
2023/03/30 14:49 upstream ffe78bbd5121 f325deb0 .config console log report info ci-qemu-upstream-386 WARNING in process_fd_request
* Struck through repros no longer work on HEAD.