sg_write: data in/out 524252/251 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: 12007 at lib/iov_iter.c:629 _copy_from_iter+0x2bf/0x1170 Modules linked in: CPU: 1 PID: 12007 Comm: syz-executor.0 Not tainted 6.2.0-rc3-next-20230109 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:_copy_from_iter+0x2bf/0x1170 Code: 5d 41 5e 41 5f e9 65 35 32 02 e8 8c 28 37 ff be 79 02 00 00 48 c7 c7 40 d5 9e 84 e8 fb d4 5a ff e9 48 fe ff ff e8 71 28 37 ff <0f> 0b 45 31 f6 eb 87 e8 65 28 37 ff 31 ff 89 ee e8 2c 24 37 ff 40 RSP: 0018:ffff8880140bf5e8 EFLAGS: 00010216 RAX: 0000000000003f8c RBX: 0000000000000000 RCX: ffffc900009f8000 RDX: 0000000000040000 RSI: ffffffff821249ff RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffff8880140bf818 R13: ffffea00010bea00 R14: 0000000000001000 R15: ffff8880140bf818 FS: 00007f6f2ad35700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6f2ad14718 CR3: 000000003f054000 CR4: 0000000000350ee0 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+0xb0c/0x1650 blk_rq_map_user_io+0x1ee/0x220 sg_common_write.constprop.0+0xd84/0x15e0 sg_write.part.0+0x698/0xa90 sg_write+0x8d/0xe0 vfs_write+0x2cf/0xdd0 ksys_write+0x12b/0x260 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f6f2d7e0b19 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:00007f6f2ad35188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f6f2d8f4020 RCX: 00007f6f2d7e0b19 RDX: 0000000000000125 RSI: 00000000200003c0 RDI: 0000000000000006 RBP: 00007f6f2d83af6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdd69a041f R14: 00007f6f2ad35300 R15: 0000000000022000 irq event stamp: 1599 hardirqs last enabled at (1609): [] __up_console_sem+0x78/0x80 hardirqs last disabled at (1620): [] __up_console_sem+0x5d/0x80 softirqs last enabled at (820): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (789): [] __irq_exit_rcu+0x11b/0x180 ---[ end trace 0000000000000000 ]--- sr 1:0:0:0: [sr0] CDROM not ready. Make sure there is a disc in the drive. sr 1:0:0:0: [sr0] CDROM not ready. Make sure there is a disc in the drive. sr 1:0:0:0: [sr0] CDROM not ready. Make sure there is a disc in the drive. sr 1:0:0:0: [sr0] CDROM not ready. Make sure there is a disc in the drive. sr 1:0:0:0: [sr0] CDROM not ready. Make sure there is a disc in the drive. sr 1:0:0:0: [sr0] CDROM not ready. Make sure there is a disc in the drive. sr 1:0:0:0: [sr0] CDROM not ready. Make sure there is a disc in the drive. sr 1:0:0:0: [sr0] CDROM not ready. Make sure there is a disc in the drive. device syz_tun entered promiscuous mode device syz_tun left promiscuous mode sr 1:0:0:0: [sr0] CDROM not ready. Make sure there is a disc in the drive. sr 1:0:0:0: [sr0] CDROM not ready. Make sure there is a disc in the drive. device syz_tun entered promiscuous mode device syz_tun left promiscuous mode device syz_tun entered promiscuous mode device syz_tun left promiscuous mode device syz_tun entered promiscuous mode device syz_tun left promiscuous mode UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy misc raw-gadget: fail, usb_gadget_register_driver returned -16 UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy misc raw-gadget: fail, usb_gadget_register_driver returned -16 device lo entered promiscuous mode device lo left promiscuous mode device lo entered promiscuous mode