Hello, syzbot found the following issue on: HEAD commit: b2d229d4ddb1 Linux 5.18-rc3 git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=10b813f0f00000 kernel config: https://syzkaller.appspot.com/x/.config?x=dd7c9a79dfcfa205 dashboard link: https://syzkaller.appspot.com/bug?extid=bac6723617710898abd3 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 Unfortunately, I don't have any reproducer for this issue yet. IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+bac6723617710898abd3@xxxxxxxxxxxxxxxxxxxxxxxxx ------------[ cut here ]------------ WARNING: CPU: 2 PID: 22697 at drivers/block/floppy.c:1000 schedule_bh drivers/block/floppy.c:1000 [inline] WARNING: CPU: 2 PID: 22697 at drivers/block/floppy.c:1000 process_fd_request drivers/block/floppy.c:2849 [inline] WARNING: CPU: 2 PID: 22697 at drivers/block/floppy.c:1000 __floppy_read_block_0.isra.0+0x292/0x330 drivers/block/floppy.c:4141 Modules linked in: CPU: 2 PID: 22697 Comm: syz-executor.3 Not tainted 5.18.0-rc3-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 RIP: 0010:schedule_bh drivers/block/floppy.c:1000 [inline] RIP: 0010:process_fd_request drivers/block/floppy.c:2849 [inline] RIP: 0010:__floppy_read_block_0.isra.0+0x292/0x330 drivers/block/floppy.c:4141 Code: 84 24 b8 01 00 00 65 48 2b 04 25 28 00 00 00 0f 85 a0 00 00 00 48 81 c4 c0 01 00 00 5b 5d 41 5c 41 5d 41 5e c3 e8 1e 1e f0 fc <0f> 0b e9 5a ff ff ff e8 e2 12 3b fd e9 7c fe ff ff e8 08 1e f0 fc RSP: 0018:ffffc90021f2f6c0 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 1ffff920043e5ed8 RCX: 0000000000000000 RDX: ffff888019a48080 RSI: ffffffff84882ff2 RDI: 0000000000000003 RBP: ffffea0001593300 R08: 0000000000000000 R09: ffffffff8c8b3f27 R10: ffffffff84882f4a R11: 0000000000000000 R12: 0000000000000001 R13: 0000000000000001 R14: dffffc0000000000 R15: 0000000000000001 FS: 00007fce8416d700(0000) GS:ffff88802cc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f5e5a11efc0 CR3: 000000006ad68000 CR4: 0000000000150ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> floppy_revalidate.isra.0+0x801/0xae0 drivers/block/floppy.c:4187 floppy_open+0xac5/0xd70 drivers/block/floppy.c:4039 blkdev_get_whole+0x99/0x2d0 block/bdev.c:666 blkdev_get_by_dev.part.0+0x5d2/0xc80 block/bdev.c:816 blkdev_get_by_dev+0x6b/0x80 block/bdev.c:850 blkdev_open+0x13c/0x2c0 block/fops.c:498 do_dentry_open+0x4a1/0x11e0 fs/open.c:824 do_open fs/namei.c:3476 [inline] path_openat+0x1c71/0x2910 fs/namei.c:3609 do_filp_open+0x1aa/0x400 fs/namei.c:3636 do_sys_openat2+0x16d/0x4c0 fs/open.c:1213 do_sys_open fs/open.c:1229 [inline] __do_sys_openat fs/open.c:1245 [inline] __se_sys_openat fs/open.c:1240 [inline] __x64_sys_openat+0x13f/0x1f0 fs/open.c:1240 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7fce8303c004 Code: 84 00 00 00 00 00 44 89 54 24 0c e8 96 f9 ff ff 44 8b 54 24 0c 44 89 e2 48 89 ee 41 89 c0 bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 89 44 24 0c e8 c8 f9 ff ff 8b 44 RSP: 002b:00007fce8416cca0 EFLAGS: 00000293 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 6666666666666667 RCX: 00007fce8303c004 RDX: 0000000000000000 RSI: 00007fce8416cd40 RDI: 00000000ffffff9c RBP: 00007fce8416cd40 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 R13: 00007ffe79dbf38f R14: 00007fce8416d300 R15: 0000000000022000 </TASK> --- 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@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
