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: 4589 at lib/iov_iter.c:623 _copy_from_iter+0x2b2/0x1140 Modules linked in: CPU: 1 PID: 4589 Comm: syz-executor.0 Not tainted 6.2.0-next-20230306 #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 b2 fe 34 02 e8 b9 16 35 ff be 73 02 00 00 48 c7 c7 e0 eb 9e 84 e8 78 0b 59 ff e9 51 fe ff ff e8 9e 16 35 ff <0f> 0b 45 31 f6 eb 87 e8 92 16 35 ff 31 ff 89 ee e8 c9 11 35 ff 40 RSP: 0018:ffff88801a2b7608 EFLAGS: 00010212 RAX: 0000000000003674 RBX: 0000000000000000 RCX: ffffc90002df6000 RDX: 0000000000040000 RSI: ffffffff82166ab2 RDI: 0000000000000001 RBP: 0000000000001000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: ffff88801a2b7838 R14: 0000000000001000 R15: ffff88801a2b7838 FS: 00007f327442a700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2c73f000 CR3: 0000000014360000 CR4: 0000000000350ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: <TASK> 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: 0033:0x7f3276ef6b19 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:00007f327442a188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f327700a0e0 RCX: 00007f3276ef6b19 RDX: 0000000000000125 RSI: 00000000200003c0 RDI: 0000000000000004 RBP: 00007f3276f50f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff40bb726f R14: 00007f327442a300 R15: 0000000000022000 </TASK> irq event stamp: 863 hardirqs last enabled at (875): [<ffffffff812fb2b8>] __up_console_sem+0x78/0x80 hardirqs last disabled at (886): [<ffffffff812fb29d>] __up_console_sem+0x5d/0x80 softirqs last enabled at (400): [<ffffffff8118efbc>] __irq_exit_rcu+0xcc/0x110 softirqs last disabled at (395): [<ffffffff8118efbc>] __irq_exit_rcu+0xcc/0x110 ---[ end trace 0000000000000000 ]--- SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=4582 comm=syz-executor.0 syz_tun: left promiscuous mode syz_tun: entered promiscuous mode random: crng reseeded on system resumption syz_tun: left promiscuous mode random: crng reseeded on system resumption Restarting kernel threads ... done. tmpfs: Unknown parameter 'fowner' tmpfs: Unknown parameter 'fowner' random: crng reseeded on system resumption Restarting kernel threads ... done. Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 Bluetooth: hci0: command 0x0409 tx timeout Bluetooth: hci0: command 0x041b tx timeout Bluetooth: hci0: command 0x040f tx timeout