sg_write: data in/out 917468/251 bytes for SCSI command 0x0-- guessing data in;
program syz-executor.3 not setting count and/or reply_len properly
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WARNING: CPU: 0 PID: 4110 at lib/iov_iter.c:385 _copy_from_iter+0x2f1/0x1320
Modules linked in:
CPU: 0 PID: 4110 Comm: syz-executor.3 Not tainted 6.4.0-rc5-next-20230605 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:_copy_from_iter+0x2f1/0x1320
Code: b2 ff ff 89 c3 e9 1f ff ff ff e8 4a e8 35 ff be 85 01 00 00 48 c7 c7 c0 ec 9e 84 e8 79 43 5a ff e9 13 fe ff ff e8 2f e8 35 ff <0f> 0b 45 31 f6 e9 67 ff ff ff e8 20 e8 35 ff 31 ff 89 ee e8 57 e3
RSP: 0018:ffff888042097608 EFLAGS: 00010212
RAX: 0000000000003b52 RBX: 0000000000000000 RCX: ffffc90000be9000
RDX: 0000000000040000 RSI: ffffffff821623b1 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff846000aa R12: 0000000000001000
R13: ffffea0001109a00 R14: 0000000000001000 R15: ffff888042097838
FS: 00007f6632e38700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020008038 CR3: 000000000f120000 CR4: 0000000000350ef0
Call Trace:
copy_page_from_iter+0xe3/0x180
blk_rq_map_user_iov+0xb39/0x16c0
blk_rq_map_user_io+0x1d1/0x200
sg_common_write.constprop.0+0xd8d/0x15f0
sg_write.part.0+0x698/0xac0
audit: type=1400 audit(1685986671.447:10): avc: denied { read } for pid=4109 comm="syz-executor.3" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1
sg_write+0x8d/0xe0
vfs_write+0x2b8/0xd40
ksys_write+0x12b/0x260
do_syscall_64+0x3f/0x90
entry_SYSCALL_64_after_hwframe+0x6e/0xd8
RIP: 0033:0x7f66358c2b19
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:00007f6632e38188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f66359d5f60 RCX: 00007f66358c2b19
RDX: 0000000000000125 RSI: 00000000200003c0 RDI: 0000000000000005
RBP: 00007f663591cf6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc1c092f5f R14: 00007f6632e38300 R15: 0000000000022000
irq event stamp: 265193
hardirqs last enabled at (265339): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20
hardirqs last disabled at (265487): [] __do_softirq+0x665/0x7d4
softirqs last enabled at (265654): [] irq_exit_rcu+0x93/0xc0
softirqs last disabled at (265825): [] irq_exit_rcu+0x93/0xc0
---[ end trace 0000000000000000 ]---