sg_write: data in/out 917468/251 bytes for SCSI command 0x0-- guessing data in;
program syz-executor.2 not setting count and/or reply_len properly
------------[ cut here ]------------
WARNING: CPU: 0 PID: 11287 at lib/iov_iter.c:629 _copy_from_iter+0x2bf/0x1150
Modules linked in:
CPU: 0 PID: 11287 Comm: syz-executor.2 Not tainted 6.2.0-rc1-next-20221226 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:_copy_from_iter+0x2bf/0x1150
mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium
Code: 5d 41 5e 41 5f e9 a5 9f 2f 02 e8 9c a3 37 ff be 79 02 00 00 48 c7 c7 80 cb 9e 84 e8 6b 18 5b ff e9 48 fe ff ff e8 81 a3 37 ff <0f> 0b 45 31 f6 eb 87 e8 75 a3 37 ff 31 ff 89 ee e8 3c 9f 37 ff 40
RSP: 0018:ffff8880225cf5e8 EFLAGS: 00010216
RAX: 000000000000637e RBX: 0000000000000000 RCX: ffffc90006003000
RDX: 0000000000040000 RSI: ffffffff821139ff RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: ffff8880225cf818
R13: ffffea000126da00 R14: 0000000000001000 R15: ffff8880225cf818
FS: 00007f4818ac1700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f69718333a4 CR3: 0000000047b06000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
copy_page_from_iter+0xe3/0x180
blk_rq_map_user_iov+0xb0c/0x1650
blk_rq_map_user_io+0x1ee/0x220
sg_common_write.constprop.0+0xd84/0x15e0
sg_write.part.0+0x698/0xa90
sg_write+0x88/0xe0
vfs_write+0x2cf/0xd90
ksys_write+0x12b/0x260
do_syscall_64+0x3f/0x90
entry_SYSCALL_64_after_hwframe+0x72/0xdc
RIP: 0033:0x7f481b54bb19
mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium
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:00007f4818ac1188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f481b65ef60 RCX: 00007f481b54bb19
RDX: 0000000000000125 RSI: 00000000200003c0 RDI: 0000000000000005
RBP: 00007f481b5a5f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc9ac041cf R14: 00007f4818ac1300 R15: 0000000000022000
irq event stamp: 9333
hardirqs last enabled at (9385): [] __up_console_sem+0x78/0x80
hardirqs last disabled at (9438): [] sysvec_apic_timer_interrupt+0xf/0xc0
softirqs last enabled at (8732): [] __irq_exit_rcu+0x11b/0x180
softirqs last disabled at (8367): [] __irq_exit_rcu+0x11b/0x180
---[ end trace 0000000000000000 ]---
sg_write: data in/out 917468/251 bytes for SCSI command 0x0-- guessing data in;
program syz-executor.2 not setting count and/or reply_len properly
audit: type=1400 audit(1672293208.222:15): avc: denied { watch_reads } for pid=11308 comm="syz-executor.3" path="/syzkaller-testdir169784903/syzkaller.FqlbgC/122/file1" dev="rpc_pipefs" ino=25789 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:rpc_pipefs_t:s0 tclass=dir permissive=1
9pnet_fd: Insufficient options for proto=fd
mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium
9pnet_fd: Insufficient options for proto=fd
loop4: detected capacity change from 0 to 264192
mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium
FAT-fs (loop4): Unrecognized mount option "@" or missing value
loop4: detected capacity change from 0 to 264192
FAT-fs (loop4): Unrecognized mount option "@" or missing value
----------------
Code disassembly (best guess), 1 bytes skipped:
0: ff c3 inc %ebx
2: 66 2e 0f 1f 84 00 00 nopw %cs:0x0(%rax,%rax,1)
9: 00 00 00
c: 0f 1f 40 00 nopl 0x0(%rax)
10: 48 89 f8 mov %rdi,%rax
13: 48 89 f7 mov %rsi,%rdi
16: 48 89 d6 mov %rdx,%rsi
19: 48 89 ca mov %rcx,%rdx
1c: 4d 89 c2 mov %r8,%r10
1f: 4d 89 c8 mov %r9,%r8
22: 4c 8b 4c 24 08 mov 0x8(%rsp),%r9
27: 0f 05 syscall
* 29: 48 3d 01 f0 ff ff cmp $0xfffffffffffff001,%rax <-- trapping instruction
2f: 73 01 jae 0x32
31: c3 retq
32: 48 c7 c1 bc ff ff ff mov $0xffffffffffffffbc,%rcx
39: f7 d8 neg %eax
3b: 64 89 01 mov %eax,%fs:(%rcx)
3e: 48 rex.W