Hello,
syzbot found the following issue on:
HEAD commit: 3f8a27f9e27b Linux 4.19.211
git tree: linux-4.19.y
console output:
https://syzkaller.appspot.com/x/log.txt?x=110b0fc4c80000
kernel config:
https://syzkaller.appspot.com/x/.config?x=9b9277b418617afe
dashboard link:
https://syzkaller.appspot.com/bug?extid=c81af59d5b78cf13563b
compiler: gcc version 10.2.1 20210110 (Debian 10.2.1-6)
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image:
https://storage.googleapis.com/syzbot-assets/98c0bdb4abb3/disk-3f8a27f9.raw.xz
vmlinux:
https://storage.googleapis.com/syzbot-assets/ea228ff02669/vmlinux-3f8a27f9.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by:
syzbot+c81af5...@syzkaller.appspotmail.com
RBP: 00007f8afefb01d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffddf9b456f R14: 00007f8afefb0300 R15: 0000000000022000
------------[ cut here ]------------
WARNING: CPU: 0 PID: 20674 at fs/btrfs/inode.c:4058 __btrfs_unlink_inode+0xaef/0xc60 fs/btrfs/inode.c:4058
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 20674 Comm: syz-executor.3 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
panic+0x26a/0x50e kernel/panic.c:186
__warn.cold+0x20/0x5a kernel/panic.c:541
report_bug+0x262/0x2b0 lib/bug.c:183
fixup_bug arch/x86/kernel/traps.c:178 [inline]
fixup_bug arch/x86/kernel/traps.c:173 [inline]
do_error_trap+0x1d7/0x310 arch/x86/kernel/traps.c:296
invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1038
RIP: 0010:__btrfs_unlink_inode+0xaef/0xc60 fs/btrfs/inode.c:4058
Code: 79 fe 8b 85 28 ff ff ff 83 f8 fb 0f 84 6a ad 11 05 e8 b5 bf 79 fe 8b 85 28 ff ff ff 48 c7 c7 40 c3 a4 88 89 c6 e8 86 f7 09 05 <0f> 0b 8b 85 28 ff ff ff 89 85 28 ff ff ff e8 8e bf 79 fe 8b 85 28
RSP: 0018:ffff88803e58fc60 EFLAGS: 00010282
RAX: 0000000000000000 RBX: ffff8880a1fc6400 RCX: 0000000000000000
RDX: 0000000000040000 RSI: ffffffff814dff01 RDI: ffffed1007cb1f7e
RBP: ffff88803e58fd78 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880b488e630
R13: ffff88803ac8e398 R14: 0000000000000007 R15: 0000000000000100
btrfs_unlink_inode fs/btrfs/inode.c:4096 [inline]
btrfs_unlink+0x157/0x2d0 fs/btrfs/inode.c:4140
vfs_unlink+0x27d/0x4e0 fs/namei.c:4002
do_unlinkat+0x3b8/0x660 fs/namei.c:4065
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f8b00a3e0f9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f8afefb0168 EFLAGS: 00000246 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 00007f8b00b5df80 RCX: 00007f8b00a3e0f9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000380
RBP: 00007f8afefb01d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffddf9b456f R14: 00007f8afefb0300 R15: 0000000000022000
Kernel Offset: disabled
Rebooting in 86400 seconds..
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