syzbot


WARNING in iov_iter_pipe (2)

Status: auto-closed as invalid on 2022/02/17 17:42
Reported-by: syzbot+7e3ea7eaebc6168ab4d5@syzkaller.appspotmail.com
First crash: 379d, last: 298d
similar bugs (1):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in iov_iter_pipe C done 1117 994d 1011d 16/23 fixed on 2019/12/13 00:31

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 27784 at lib/iov_iter.c:1162 iov_iter_pipe+0x228/0x2d0 lib/iov_iter.c:1162
Modules linked in:
CPU: 0 PID: 27784 Comm: syz-executor.2 Not tainted 5.15.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:iov_iter_pipe+0x228/0x2d0 lib/iov_iter.c:1162
Code: 83 c0 03 38 d0 7c 04 84 d2 75 54 44 89 63 24 48 83 c4 10 5b 5d 41 5c 41 5d 41 5e 41 5f c3 e8 6f 93 9e fd 0f 0b e8 68 93 9e fd <0f> 0b 48 b8 00 00 00 00 00 fc ff df 48 8b 14 24 48 c1 ea 03 0f b6
RSP: 0018:ffffc90002f3f9e0 EFLAGS: 00010216
RAX: 000000000001c83a RBX: ffffc90002f3fa60 RCX: ffffc9000ff99000
RDX: 0000000000040000 RSI: ffffffff83d844b8 RDI: 0000000000000003
RBP: ffff8880186a2000 R08: 0000000000000010 R09: 0000000000008000
R10: ffffffff83d8437a R11: 0000000000004000 R12: 0000000000000050
R13: 0000000000000000 R14: 0000000000000010 R15: 0000000000000010
FS:  00007fa1b6407700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd9aee8000 CR3: 000000002b37c000 CR4: 0000000000350ef0
Call Trace:
 generic_file_splice_read+0x9c/0x6d0 fs/splice.c:307
 do_splice_to+0x1bf/0x250 fs/splice.c:796
 splice_direct_to_actor+0x2c2/0x8c0 fs/splice.c:870
 do_splice_direct+0x1b3/0x280 fs/splice.c:979
 do_sendfile+0xae9/0x1240 fs/read_write.c:1249
 __do_sys_sendfile64 fs/read_write.c:1314 [inline]
 __se_sys_sendfile64 fs/read_write.c:1300 [inline]
 __x64_sys_sendfile64+0x1cc/0x210 fs/read_write.c:1300
 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: 0033:0x7fa1b8eb2a39
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fa1b6407188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007fa1b8fb6020 RCX: 00007fa1b8eb2a39
RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000008
RBP: 00007fa1b8f0cc5f R08: 0000000000000000 R09: 0000000000000000
R10: 0000800100020016 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd63c08fdf R14: 00007fa1b6407300 R15: 0000000000022000

Crashes (4):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-root 2021/10/20 17:41 upstream 8e37395c3a5d 418a00eb .config log report info WARNING in iov_iter_pipe
ci-upstream-kasan-gce-selinux-root 2021/08/08 23:27 upstream 66745863ecde 6972b106 .config log report info WARNING in iov_iter_pipe
ci-upstream-kasan-gce-root 2021/08/03 22:30 upstream d5ad8ec3cfb5 6c236867 .config log report info WARNING in iov_iter_pipe
ci-upstream-kasan-gce-smack-root 2021/07/31 23:34 upstream f3438b4c4e69 6c236867 .config log report info WARNING in iov_iter_pipe