program syz-executor.5 not setting count and/or reply_len properly
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WARNING: CPU: 0 PID: 4826 at lib/iov_iter.c:376 _copy_from_iter+0x2b2/0x1140
Modules linked in:
CPU: 0 PID: 4826 Comm: syz-executor.5 Not tainted 6.3.0-rc3-next-20230327 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:_copy_from_iter+0x2b2/0x1140
Code: 5d 41 5e 41 5f e9 52 46 34 02 e8 a9 89 36 ff be 7c 01 00 00 48 c7 c7 60 c4 9e 84 e8 d8 7e 5a ff e9 51 fe ff ff e8 8e 89 36 ff <0f> 0b 45 31 f6 eb 87 e8 82 89 36 ff 31 ff 89 ee e8 b9 84 36 ff 40
RSP: 0018:ffff88801808f608 EFLAGS: 00010212
RAX: 000000000000321d RBX: 0000000000000000 RCX: ffffc900051f2000
RDX: 0000000000040000 RSI: ffffffff8214ff52 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000001000
R13: ffff88801808f838 R14: 0000000000001000 R15: ffff88801808f838
FS: 00007f370e7d4700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2c522000 CR3: 0000000044910000 CR4: 0000000000350ef0
Call Trace:
copy_page_from_iter+0xe3/0x180
blk_rq_map_user_iov+0xb41/0x16c0
blk_rq_map_user_io+0x1d1/0x200
sg_common_write.constprop.0+0xd8d/0x15f0
sg_write.part.0+0x698/0xac0
sg_write+0x8d/0xe0
vfs_write+0x2d8/0xdd0
ksys_write+0x12b/0x260
do_syscall_64+0x3f/0x90
entry_SYSCALL_64_after_hwframe+0x72/0xdc
RIP: 0033:0x7f371125eb19
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:00007f370e7d4188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f3711371f60 RCX: 00007f371125eb19
RDX: 0000000000000125 RSI: 00000000200003c0 RDI: 0000000000000006
RBP: 00007f37112b8f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd761e397f R14: 00007f370e7d4300 R15: 0000000000022000
irq event stamp: 4677
hardirqs last enabled at (4685): [] vprintk_emit+0x504/0x560
hardirqs last disabled at (4692): [] vprintk_emit+0x49b/0x560
softirqs last enabled at (3182): [] __irq_exit_rcu+0xcc/0x110
softirqs last disabled at (709): [] __irq_exit_rcu+0xcc/0x110
---[ end trace 0000000000000000 ]---
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=4826 comm=syz-executor.5