syzbot <syzbot+adec8406ad17413d4c06@xxxxxxxxxxxxxxxxxxxxxxxxx> writes: > Hello, > > syzbot found the following issue on: > > HEAD commit: b7b275e60bcd Linux 6.1-rc7 > git tree: upstream > console+strace: https://syzkaller.appspot.com/x/log.txt?x=158a7b73880000 > kernel config: https://syzkaller.appspot.com/x/.config?x=2325e409a9a893e1 > dashboard link: https://syzkaller.appspot.com/bug?extid=adec8406ad17413d4c06 > compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=169ccb75880000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17bf7153880000 > > Downloadable assets: > disk image: https://storage.googleapis.com/syzbot-assets/525233126d34/disk-b7b275e6.raw.xz > vmlinux: https://storage.googleapis.com/syzbot-assets/e8299bf41400/vmlinux-b7b275e6.xz > kernel image: https://storage.googleapis.com/syzbot-assets/eebf691dbf6f/bzImage-b7b275e6.xz > mounted in repro: https://storage.googleapis.com/syzbot-assets/5423c2d2ad62/mount_0.gz > > The issue was bisected to: > > commit c814bf958926ff45a9c1e899bd001006ab6cfbae > Author: ye xingchen <ye.xingchen@xxxxxxxxxx> > Date: Tue Aug 16 10:51:06 2022 +0000 > > powerpc/selftests: Use timersub() for gettimeofday() That can't be right, that patch only touches tools/testing/selftests/powerpc/benchmarks/gettimeofday.c which isn't built into vmlinux - and definitely not for an x86 build. > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=118c3d03880000 This says: Reproducer flagged being flaky AFAICS there isn't a syzbot command to ask for a new bisection, so someone will have to do it manually. cheers > final oops: https://syzkaller.appspot.com/x/report.txt?x=138c3d03880000 > console output: https://syzkaller.appspot.com/x/log.txt?x=158c3d03880000 > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+adec8406ad17413d4c06@xxxxxxxxxxxxxxxxxxxxxxxxx > Fixes: c814bf958926 ("powerpc/selftests: Use timersub() for gettimeofday()") > > RDX: 0000000000000001 RSI: 0000000020000280 RDI: 0000000000000005 > RBP: 00007ffd32e91c70 R08: 0000000000000000 R09: 0000000000000000 > R10: 0000000008000000 R11: 0000000000000246 R12: 0000000000000006 > R13: 00007ffd32e91cb0 R14: 00007ffd32e91c90 R15: 0000000000000006 > </TASK> > ------------[ cut here ]------------ > WARNING: CPU: 1 PID: 3764 at fs/btrfs/space-info.h:122 btrfs_space_info_free_bytes_may_use fs/btrfs/space-info.h:154 [inline] > WARNING: CPU: 1 PID: 3764 at fs/btrfs/space-info.h:122 btrfs_free_reserved_data_space_noquota+0x219/0x2b0 fs/btrfs/delalloc-space.c:179 > Modules linked in: > CPU: 1 PID: 3764 Comm: syz-executor759 Not tainted 6.1.0-rc7-syzkaller #0 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 > RIP: 0010:btrfs_space_info_update_bytes_may_use fs/btrfs/space-info.h:122 [inline] > RIP: 0010:btrfs_space_info_free_bytes_may_use fs/btrfs/space-info.h:154 [inline] > RIP: 0010:btrfs_free_reserved_data_space_noquota+0x219/0x2b0 fs/btrfs/delalloc-space.c:179 > Code: 2f 00 74 08 4c 89 ef e8 b5 98 32 fe 49 8b 5d 00 48 89 df 4c 8b 74 24 08 4c 89 f6 e8 21 81 de fd 4c 39 f3 73 16 e8 d7 7e de fd <0f> 0b 31 db 4c 8b 34 24 41 80 3c 2f 00 75 8c eb 92 e8 c1 7e de fd > RSP: 0018:ffffc9000443f410 EFLAGS: 00010293 > RAX: ffffffff83ac1919 RBX: 00000000005cb000 RCX: ffff888027989d40 > RDX: 0000000000000000 RSI: 0000000000800000 RDI: 00000000005cb000 > RBP: dffffc0000000000 R08: ffffffff83ac190f R09: fffffbfff1cebe0e > R10: fffffbfff1cebe0e R11: 1ffffffff1cebe0d R12: ffff8880774f3800 > R13: ffff8880774f3860 R14: 0000000000800000 R15: 1ffff1100ee9e70c > FS: 0000555555aaa300(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 00007f0d98f20140 CR3: 0000000025ccf000 CR4: 00000000003506e0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > Call Trace: > <TASK> > btrfs_free_reserved_data_space+0x9d/0xd0 fs/btrfs/delalloc-space.c:199 > btrfs_dio_iomap_begin+0x8f7/0x1070 fs/btrfs/inode.c:7762 > iomap_iter+0x606/0x8a0 fs/iomap/iter.c:74 > __iomap_dio_rw+0xd91/0x20d0 fs/iomap/direct-io.c:601 > btrfs_dio_write+0x9c/0xe0 fs/btrfs/inode.c:8094 > btrfs_direct_write fs/btrfs/file.c:1835 [inline] > btrfs_do_write_iter+0x871/0x1260 fs/btrfs/file.c:1980 > do_iter_write+0x6c2/0xc20 fs/read_write.c:861 > vfs_writev fs/read_write.c:934 [inline] > do_pwritev+0x200/0x350 fs/read_write.c:1031 > do_syscall_x64 arch/x86/entry/common.c:50 [inline] > do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 > entry_SYSCALL_64_after_hwframe+0x63/0xcd > RIP: 0033:0x7f0d98ea8ea9 > Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 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 c0 ff ff ff f7 d8 64 89 01 48 > RSP: 002b:00007ffd32e91c38 EFLAGS: 00000246 ORIG_RAX: 0000000000000148 > RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f0d98ea8ea9 > RDX: 0000000000000001 RSI: 0000000020000280 RDI: 0000000000000005 > RBP: 00007ffd32e91c70 R08: 0000000000000000 R09: 0000000000000000 > R10: 0000000008000000 R11: 0000000000000246 R12: 0000000000000006 > R13: 00007ffd32e91cb0 R14: 00007ffd32e91c90 R15: 0000000000000006 > </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. > For information about bisection process see: https://goo.gl/tpsmEJ#bisection > syzbot can test patches for this issue, for details see: > https://goo.gl/tpsmEJ#testing-patches
