sg_write: data in/out 917468/251 bytes for SCSI command 0x0-- guessing data in; program syz-executor.6 not setting count and/or reply_len properly ------------[ cut here ]------------ WARNING: CPU: 1 PID: 11805 at lib/iov_iter.c:364 _copy_from_iter+0x2b2/0x1140 Modules linked in: CPU: 1 PID: 11805 Comm: syz-executor.6 Not tainted 6.2.0-rc8-next-20230220 #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 92 fe 33 02 e8 99 e2 35 ff be 70 01 00 00 48 c7 c7 60 d1 9e 84 e8 28 d7 59 ff e9 51 fe ff ff e8 7e e2 35 ff <0f> 0b 45 31 f6 eb 87 e8 72 e2 35 ff 31 ff 89 ee e8 d9 dd 35 ff 40 RSP: 0018:ffff88801ee5f608 EFLAGS: 00010212 RAX: 0000000000007539 RBX: 0000000000000000 RCX: ffffc900029e4000 RDX: 0000000000040000 RSI: ffffffff82159152 RDI: 0000000000000001 RBP: 0000000000001000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: ffff88801ee5f838 R14: 0000000000001000 R15: ffff88801ee5f838 FS: 00007f54f0475700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f095bf0d688 CR3: 0000000047b98000 CR4: 0000000000350ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 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: 0033:0x7f54f2effb19 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:00007f54f0475188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f54f3012f60 RCX: 00007f54f2effb19 RDX: 0000000000000125 RSI: 00000000200003c0 RDI: 0000000000000005 RBP: 00007f54f2f59f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffde79429ef R14: 00007f54f0475300 R15: 0000000000022000 irq event stamp: 9923 hardirqs last enabled at (10043): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (10170): [] sysvec_apic_timer_interrupt+0xf/0x90 softirqs last enabled at (2520): [] __irq_exit_rcu+0xcc/0x110 softirqs last disabled at (2325): [] __irq_exit_rcu+0xcc/0x110 ---[ end trace 0000000000000000 ]--- SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=11812 comm=syz-executor.6 sg_write: data in/out 917468/251 bytes for SCSI command 0x0-- guessing data in; program syz-executor.6 not setting count and/or reply_len properly sg_write: data in/out 917468/251 bytes for SCSI command 0x0-- guessing data in; program syz-executor.6 not setting count and/or reply_len properly SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=11853 comm=syz-executor.4 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=11852 comm=syz-executor.3 blktrace: Concurrent blktraces are not allowed on sg0 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=11857 comm=syz-executor.6 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=11860 comm=syz-executor.4 blktrace: Concurrent blktraces are not allowed on sg0 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=11868 comm=syz-executor.6 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=11874 comm=syz-executor.3 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=11906 comm=syz-executor.3 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=11908 comm=syz-executor.1 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=11910 comm=syz-executor.6 lo: left promiscuous mode lo: left allmulticast mode loop6: detected capacity change from 0 to 264192 tmpfs: Unknown parameter 'mpolprefer:0' tmpfs: Unknown parameter '.]sprefer:0' loop6: detected capacity change from 0 to 264192 tmpfs: Unknown parameter 'mpolprefer:0' loop6: detected capacity change from 0 to 264192 tmpfs: Unknown parameter 'mpolprefer:0' tmpfs: Unknown parameter '.]sprefer:0' loop6: detected capacity change from 0 to 264192 tmpfs: Unknown parameter 'mpolprefer:0' tmpfs: Unknown parameter '.]sprefer:0' loop6: detected capacity change from 0 to 264192 tmpfs: Unknown parameter 'mpolprefer:0'