sg_write: data in/out 912/1 bytes for SCSI command 0x10-- guessing data in; program syz-executor.7 not setting count and/or reply_len properly ------------[ cut here ]------------ WARNING: CPU: 1 PID: 7926 at lib/iov_iter.c:629 _copy_from_iter+0x2bf/0x1170 Modules linked in: CPU: 1 PID: 7926 Comm: syz-executor.7 Not tainted 6.2.0-rc4-next-20230120 #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 95 42 33 02 e8 cc cc 37 ff be 79 02 00 00 48 c7 c7 80 e3 9e 84 e8 3b 68 5b ff e9 48 fe ff ff e8 b1 cc 37 ff <0f> 0b 45 31 f6 eb 87 e8 a5 cc 37 ff 31 ff 89 ee e8 6c c8 37 ff 40 RSP: 0018:ffff888044dc7608 EFLAGS: 00010216 RAX: 0000000000000e1e RBX: 0000000000000000 RCX: ffffc9000ee5a000 RDX: 0000000000040000 RSI: ffffffff8211ac4f RDI: 0000000000000001 RBP: 0000000000000390 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffff888044dc7838 R13: ffffea0001109800 R14: 0000000000000390 R15: ffff888044dc7838 FS: 00007f94fb776700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc8fc96900c CR3: 0000000044b30000 CR4: 0000000000350ee0 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+0x698/0xa90 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: 0033:0x7f94fe221b19 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:00007f94fb776188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f94fe335020 RCX: 00007f94fe221b19 RDX: 000000000000002b RSI: 0000000020000380 RDI: 0000000000000007 RBP: 00007f94fe27bf6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe0cf128ff R14: 00007f94fb776300 R15: 0000000000022000 </TASK> irq event stamp: 36803 hardirqs last enabled at (36813): [<ffffffff812e23b8>] __up_console_sem+0x78/0x80 hardirqs last disabled at (36824): [<ffffffff812e239d>] __up_console_sem+0x5d/0x80 softirqs last enabled at (36076): [<ffffffff81182fef>] irq_exit_rcu+0x11f/0x190 softirqs last disabled at (36045): [<ffffffff81182fef>] irq_exit_rcu+0x11f/0x190 ---[ end trace 0000000000000000 ]--- platform regulatory.0: Direct firmware load for regulatory.db failed with error -2