sg_write: data in/out 917468/251 bytes for SCSI command 0x0-- guessing data in; program syz-executor.4 not setting count and/or reply_len properly ------------[ cut here ]------------ WARNING: CPU: 0 PID: 193405 at lib/iov_iter.c:385 _copy_from_iter+0x2f1/0x1320 Modules linked in: CPU: 0 PID: 193405 Comm: syz-executor.4 Not tainted 6.4.0-rc4-next-20230531 #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 2a d4 35 ff be 85 01 00 00 48 c7 c7 a0 e8 9e 84 e8 d9 26 5a ff e9 13 fe ff ff e8 0f d4 35 ff <0f> 0b 45 31 f6 e9 67 ff ff ff e8 00 d4 35 ff 31 ff 89 ee e8 37 cf RSP: 0018:ffff8880481a7608 EFLAGS: 00010216 RAX: 0000000000002482 RBX: 0000000000000000 RCX: ffffc9000461a000 RDX: 0000000000040000 RSI: ffffffff82162a81 RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000001000 R13: ffffea00011bbc00 R14: 0000000000001000 R15: ffff8880481a7838 FS: 00007f80a5ba3700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f80a5ba2d58 CR3: 0000000044884000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: copy_page_from_iter+0xe3/0x180 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=193404 comm=syz-executor.5 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 sg_write+0x8d/0xe0 vfs_write+0x2b8/0xd40 ksys_write+0x12b/0x260 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f80a862db19 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:00007f80a5ba3188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f80a8740f60 RCX: 00007f80a862db19 RDX: 0000000000000125 RSI: 00000000200003c0 RDI: 0000000000000005 RBP: 00007f80a8687f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffd820feaf R14: 00007f80a5ba3300 R15: 0000000000022000 irq event stamp: 3853 hardirqs last enabled at (3891): [] __up_console_sem+0x78/0x80 hardirqs last disabled at (3930): [] __up_console_sem+0x5d/0x80 softirqs last enabled at (3360): [] irq_exit_rcu+0x93/0xc0 softirqs last disabled at (3329): [] irq_exit_rcu+0x93/0xc0 ---[ end trace 0000000000000000 ]--- netlink: 16 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 16 bytes leftover after parsing attributes in process `syz-executor.0'. netlink: 16 bytes leftover after parsing attributes in process `syz-executor.0'. 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 netlink: 16 bytes leftover after parsing attributes in process `syz-executor.1'. sg_write: data in/out 917468/251 bytes for SCSI command 0x0-- guessing data in; program syz-executor.4 not setting count and/or reply_len properly SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=193526 comm=syz-executor.5 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=193527 comm=syz-executor.2 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=193529 comm=syz-executor.4 netlink: 16 bytes leftover after parsing attributes in process `syz-executor.0'. 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 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=193662 comm=syz-executor.2 sg_write: data in/out 917468/251 bytes for SCSI command 0x0-- guessing data in; program syz-executor.4 not setting count and/or reply_len properly SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=193748 comm=syz-executor.4 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 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=193868 comm=syz-executor.2 netlink: 12 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.1'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor.1'.