sg_write: data in/out 512/245 bytes for SCSI command 0xe7-- guessing data in; program syz-executor.4 not setting count and/or reply_len properly ------------[ cut here ]------------ WARNING: CPU: 0 PID: 14852 at lib/iov_iter.c:385 _copy_from_iter+0x2f1/0x1320 Modules linked in: CPU: 0 PID: 14852 Comm: syz-executor.4 Not tainted 6.4.0-rc6-next-20230616 #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 ca 21 36 ff be 85 01 00 00 48 c7 c7 a0 f3 9e 84 e8 d9 64 5a ff e9 13 fe ff ff e8 af 21 36 ff <0f> 0b 45 31 f6 e9 67 ff ff ff e8 a0 21 36 ff 31 ff 89 ee e8 d7 1c RSP: 0018:ffff888048467608 EFLAGS: 00010212 RAX: 0000000000000e38 RBX: 0000000000000000 RCX: ffffc90000ffb000 RDX: 0000000000040000 RSI: ffffffff8215e421 RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000200 R13: ffffea000118f000 R14: 0000000000000200 R15: ffff888048467838 FS: 00007fabf63c4700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fbab271e420 CR3: 000000001c888000 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+0xb39/0x16c0 blk_rq_map_user_io+0x1d1/0x200 sg_common_write.constprop.0+0xd8d/0x15f0 sg_write.part.0+0x69e/0xac0 sg_write+0x8d/0xe0 vfs_write+0x2b9/0xdd0 sg_write: data in/out 626514651/245 bytes for SCSI command 0xe7-- guessing data in; program syz-executor.0 not setting count and/or reply_len properly ksys_write+0x122/0x250 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x6e/0xd8 RIP: 0033:0x7fabf8e4eb19 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:00007fabf63c4188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fabf8f61f60 RCX: 00007fabf8e4eb19 RDX: 0000000000000125 RSI: 0000000020000380 RDI: 0000000000000003 RBP: 00007fabf8ea8f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd1873d85f R14: 00007fabf63c4300 R15: 0000000000022000 irq event stamp: 1047 hardirqs last enabled at (1057): [] __up_console_sem+0x78/0x80 hardirqs last disabled at (1068): [] __up_console_sem+0x5d/0x80 softirqs last enabled at (1280): [] irq_exit_rcu+0x93/0xc0 softirqs last disabled at (1293): [] irq_exit_rcu+0x93/0xc0 ---[ end trace 0000000000000000 ]--- audit: type=1400 audit(1687141262.824:40): avc: denied { create } for pid=14864 comm="syz-executor.3" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:sshd_key_t:s0 tclass=rawip_socket permissive=1 audit: type=1400 audit(1687141262.829:41): avc: denied { bind } for pid=14864 comm="syz-executor.3" lport=1 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:sshd_key_t:s0 tclass=rawip_socket permissive=1 audit: type=1400 audit(1687141262.829:42): avc: denied { node_bind } for pid=14864 comm="syz-executor.3" saddr=255.255.255.255 scontext=system_u:object_r:sshd_key_t:s0 tcontext=system_u:object_r:node_t:s0 tclass=rawip_socket permissive=1 audit: type=1400 audit(1687141262.833:43): avc: denied { ioctl } for pid=14864 comm="syz-executor.3" path="socket:[47814]" dev="sockfs" ino=47814 ioctlcmd=0x9413 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:sshd_key_t:s0 tclass=rawip_socket permissive=1 audit: type=1400 audit(1687141262.833:44): avc: denied { create } for pid=14864 comm="syz-executor.3" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:sshd_key_t:s0 tclass=netlink_generic_socket permissive=1 audit: type=1400 audit(1687141262.837:45): avc: denied { getopt } for pid=14864 comm="syz-executor.3" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:sshd_key_t:s0 tclass=netlink_generic_socket permissive=1 sg_write: data in/out 626514651/245 bytes for SCSI command 0xe7-- guessing data in; program syz-executor.0 not setting count and/or reply_len properly