sg_write: data in/out 917468/251 bytes for SCSI command 0x0-- guessing data in;
program syz-executor.0 not setting count and/or reply_len properly
------------[ cut here ]------------
WARNING: CPU: 1 PID: 14571 at lib/iov_iter.c:623 _copy_from_iter+0x2b2/0x1140
Modules linked in:
CPU: 1 PID: 14571 Comm: syz-executor.0 Not tainted 6.2.0-next-20230224 #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 12 b9 34 02 e8 f9 ce 35 ff be 73 02 00 00 48 c7 c7 20 d7 9e 84 e8 38 b1 59 ff e9 51 fe ff ff e8 de ce 35 ff <0f> 0b 45 31 f6 eb 87 e8 d2 ce 35 ff 31 ff 89 ee e8 39 ca 35 ff 40
RSP: 0018:ffff888009a37608 EFLAGS: 00010212
RAX: 000000000000592b RBX: 0000000000000000 RCX: ffffc90000803000
RDX: 0000000000040000 RSI: ffffffff8215a6d2 RDI: 0000000000000001
RBP: 0000000000001000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
R13: ffff888009a37838 R14: 0000000000001000 R15: ffff888009a37838
FS: 00007faac8524700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055d12fbd66f0 CR3: 0000000017858000 CR4: 0000000000350ee0
Call Trace:
copy_page_from_iter+0x251/0x430
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+0x2cf/0xdc0
ksys_write+0x12b/0x260
do_syscall_64+0x3f/0x90
entry_SYSCALL_64_after_hwframe+0x72/0xdc
RIP: 0033:0x7faacafaeb19
netlink: 16 bytes leftover after parsing attributes in process `syz-executor.5'.
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:00007faac8524188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007faacb0c1f60 RCX: 00007faacafaeb19
RDX: 0000000000000125 RSI: 00000000200003c0 RDI: 0000000000000005
RBP: 00007faacb008f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcf3da259f R14: 00007faac8524300 R15: 0000000000022000
irq event stamp: 6373
hardirqs last enabled at (6405): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20
hardirqs last disabled at (6434): [] sysvec_apic_timer_interrupt+0xf/0x90
softirqs last enabled at (1682): [] __irq_exit_rcu+0xcc/0x110
softirqs last disabled at (1529): [] __irq_exit_rcu+0xcc/0x110
---[ end trace 0000000000000000 ]---
netlink: 16 bytes leftover after parsing attributes in process `syz-executor.5'.
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=14580 comm=syz-executor.0
audit: type=1400 audit(1677383360.199:21): avc: denied { read } for pid=14568 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1
----------------
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