Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 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:00007ffc498558c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fafe060e9f9
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000004
RBP: 00007ffc498558f0 R08: 0000000000000002 R09: 00007ffc49855900
R10: 0000000100000000 R11: 0000000000000246 R12: 0000000000000005
R13: 00007ffc49855930 R14: 00007ffc49855910 R15: 0000000000000001
</TASK>
------------[ cut here ]------------
WARNING: CPU: 1 PID: 4998 at lib/iov_iter.c:970 iov_iter_revert+0x381/0x830
Modules linked in:
CPU: 1 PID: 4998 Comm: syz-executor221 Not tainted 6.4.0-rc5-syzkaller-00017-ga27648c74210 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
RIP: 0010:iov_iter_revert+0x381/0x830 lib/iov_iter.c:970
Code: 80 3c 01 00 48 8b 5c 24 18 74 08 48 89 df e8 56 69 b1 fd 4c 89 3b 48 83 c4 60 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 9f 93 59 fd <0f> 0b eb e8 48 8b 6c 24 08 48 89 e8 48 c1 e8 03 42 80 3c 38 00 74
RSP: 0018:ffffc90003a1f7f0 EFLAGS: 00010293
RAX: ffffffff8431eb91 RBX: ffffc90003a1f980 RCX: ffff88802c100000
RDX: 0000000000000000 RSI: ffffffffffff1000 RDI: 000000007ffff000
RBP: ffffffffffff1000 R08: ffffffff8431e850 R09: fffffbfff1a008b3
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffffffff1000
R13: ffffc90003a1f980 R14: ffffc90003a1f998 R15: 0000000000000000
FS: 0000555556814300(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fafe06a0138 CR3: 0000000017acd000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
generic_file_read_iter+0x3db/0x540 mm/filemap.c:2820
call_read_iter include/linux/fs.h:1862 [inline]
generic_file_splice_read+0x240/0x640 fs/splice.c:419
do_splice_to fs/splice.c:902 [inline]
splice_direct_to_actor+0x40c/0xbd0 fs/splice.c:973
do_splice_direct+0x283/0x3d0 fs/splice.c:1082
do_sendfile+0x620/0xff0 fs/read_write.c:1254
__do_sys_sendfile64 fs/read_write.c:1322 [inline]
__se_sys_sendfile64+0x17c/0x1e0 fs/read_write.c:1308
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fafe060e9f9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 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:00007ffc498558c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fafe060e9f9
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000004
RBP: 00007ffc498558f0 R08: 0000000000000002 R09: 00007ffc49855900
R10: 0000000100000000 R11: 0000000000000246 R12: 0000000000000005
R13: 00007ffc49855930 R14: 00007ffc49855910 R15: 0000000000000001
</TASK>
----------------
Code disassembly (best guess):
0: 28 00 sub %al,(%rax)
2: 00 00 add %al,(%rax)
4: 75 05 jne 0xb
6: 48 83 c4 28 add $0x28,%rsp
a: c3 retq
b: e8 11 15 00 00 callq 0x1521
10: 90 nop
11: 48 89 f8 mov %rdi,%rax
14: 48 89 f7 mov %rsi,%rdi
17: 48 89 d6 mov %rdx,%rsi
1a: 48 89 ca mov %rcx,%rdx
1d: 4d 89 c2 mov %r8,%r10
20: 4d 89 c8 mov %r9,%r8
23: 4c 8b 4c 24 08 mov 0x8(%rsp),%r9
28: 0f 05 syscall
* 2a: 48 3d 01 f0 ff ff cmp $0xfffffffffffff001,%rax <-- trapping instruction
30: 73 01 jae 0x33
32: c3 retq
33: 48 c7 c1 c0 ff ff ff mov $0xffffffffffffffc0,%rcx
3a: f7 d8 neg %eax
3c: 64 89 01 mov %eax,%fs:(%rcx)
3f: 48 rex.W