program syz-executor.0 not setting count and/or reply_len properly netlink: 4 bytes leftover after parsing attributes in process `syz-executor.6'. netlink: 4 bytes leftover after parsing attributes in process `syz-executor.6'. ------------[ cut here ]------------ WARNING: CPU: 1 PID: 4323 at lib/iov_iter.c:385 _copy_from_iter+0x2b2/0x1330 Modules linked in: CPU: 1 PID: 4323 Comm: syz-executor.0 Not tainted 6.3.0-rc7-next-20230419 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:_copy_from_iter+0x2b2/0x1330 Code: 5d 41 5e 41 5f e9 82 a8 35 02 e8 e9 4a 36 ff be 85 01 00 00 48 c7 c7 a0 cf 9e 84 e8 38 5b 5a ff e9 51 fe ff ff e8 ce 4a 36 ff <0f> 0b 45 31 f6 eb 87 e8 c2 4a 36 ff 31 ff 89 ee e8 f9 45 36 ff 40 RSP: 0018:ffff88804292f608 EFLAGS: 00010212 RAX: 00000000000044a3 RBX: 0000000000000000 RCX: ffffc9000ce56000 RDX: 0000000000040000 RSI: ffffffff82158a22 RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000001000 R13: ffff88804292f838 R14: 0000000000001000 R15: ffff88804292f838 FS: 00007fe8d0902700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f86dfa0e408 CR3: 0000000019ff4000 CR4: 0000000000350ee0 Call Trace: copy_page_from_iter+0xe3/0x180 blk_rq_map_user_iov+0xb39/0x16c0 blk_rq_map_user_io+0x1d1/0x200 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=53 sclass=netlink_route_socket pid=4329 comm=syz-executor.0 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=63 sclass=netlink_route_socket pid=4329 comm=syz-executor.0 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=31 sclass=netlink_route_socket pid=4329 comm=syz-executor.0 netlink: 5236 bytes leftover after parsing attributes in process `syz-executor.0'. sg_common_write.constprop.0+0xd8d/0x15f0 sg_write.part.0+0x698/0xac0 sg_write+0x8d/0xe0 vfs_write+0x2d8/0xdd0 ksys_write+0x12b/0x260 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7fe8d338cb19 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:00007fe8d0902188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fe8d349ff60 RCX: 00007fe8d338cb19 RDX: 0000000000000125 RSI: 00000000200003c0 RDI: 0000000000000005 RBP: 00007fe8d33e6f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe33c7813f R14: 00007fe8d0902300 R15: 0000000000022000 irq event stamp: 20815 hardirqs last enabled at (21001): [] __up_console_sem+0x78/0x80 hardirqs last disabled at (21124): [] sysvec_apic_timer_interrupt+0xf/0x90 softirqs last enabled at (5608): [] __irq_exit_rcu+0xcc/0x110 softirqs last disabled at (4849): [] __irq_exit_rcu+0xcc/0x110 ---[ end trace 0000000000000000 ]--- 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 Bluetooth: hci0: command 0x0406 tx timeout Bluetooth: hci1: command 0x0406 tx timeout Bluetooth: hci2: command 0x0406 tx timeout Bluetooth: hci3: command 0x0406 tx timeout Bluetooth: hci4: command 0x0406 tx timeout Bluetooth: hci6: command 0x0406 tx timeout Bluetooth: hci7: command 0x0406 tx timeout