loop7: detected capacity change from 0 to 262228 sg_write: data in/out 327/1292 bytes for SCSI command 0x8b-- guessing data in; program syz-executor.6 not setting count and/or reply_len properly ------------[ cut here ]------------ WARNING: CPU: 1 PID: 31005 at lib/iov_iter.c:385 _copy_from_iter+0x2f1/0x1320 Modules linked in: CPU: 1 PID: 31005 Comm: syz-executor.6 Not tainted 6.4.0-rc3-next-20230525 #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 5a e4 35 ff be 85 01 00 00 48 c7 c7 c0 e6 9e 84 e8 b9 36 5a ff e9 13 fe ff ff e8 3f e4 35 ff <0f> 0b 45 31 f6 e9 67 ff ff ff e8 30 e4 35 ff 31 ff 89 ee e8 67 df RSP: 0018:ffff888036027608 EFLAGS: 00010212 RAX: 0000000000000e81 RBX: 0000000000000000 RCX: ffffc90002fe7000 RDX: 0000000000040000 RSI: ffffffff821618b1 RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: ffffffff8180f6c5 R12: 000000000000050c R13: ffffea000116d000 R14: 000000000000050c R15: ffff888036027838 FS: 00007f6137aa7700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3379e53541 CR3: 000000003d7c6000 CR4: 0000000000350ee0 Call Trace: copy_page_from_iter+0xe3/0x180 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: 0033:0x7f613a531b19 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:00007f6137aa7188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f613a644f60 RCX: 00007f613a531b19 RDX: 0000000000000540 RSI: 0000000020000400 RDI: 0000000000000003 RBP: 00007f613a58bf6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd2052e23f R14: 00007f6137aa7300 R15: 0000000000022000 irq event stamp: 1495 hardirqs last enabled at (1507): [] __up_console_sem+0x78/0x80 hardirqs last disabled at (1520): [] __up_console_sem+0x5d/0x80 softirqs last enabled at (1388): [] irq_exit_rcu+0x93/0xc0 softirqs last disabled at (1383): [] irq_exit_rcu+0x93/0xc0 ---[ end trace 0000000000000000 ]--- loop6: detected capacity change from 0 to 264192 FAT-fs (loop6): Unrecognized mount option "dont_measure" or missing value program syz-executor.6 is using a deprecated SCSI ioctl, please convert it to SG_IO program syz-executor.6 is using a deprecated SCSI ioctl, please convert it to SG_IO sg_write: data in/out 327/1292 bytes for SCSI command 0x8b-- guessing data in; program syz-executor.6 not setting count and/or reply_len properly loop6: detected capacity change from 0 to 264192 EXT4-fs error (device loop7): ext4_quota_enable:6988: inode #4: comm syz-executor.7: iget: special inode unallocated FAT-fs (loop6): Unrecognized mount option "dont_measure" or missing value EXT4-fs error (device loop7): ext4_quota_enable:6990: comm syz-executor.7: Bad quota inode: 4, type: 1 blktrace: Concurrent blktraces are not allowed on sg0 EXT4-fs warning (device loop7): ext4_enable_quotas:7028: Failed to enable quota tracking (type=1, err=-117, ino=4). Please run e2fsck to fix. EXT4-fs (loop7): mount failed loop4: detected capacity change from 0 to 512 EXT4-fs (loop4): bad geometry: block count 512 exceeds size of device (128 blocks) loop7: detected capacity change from 0 to 262228 loop3: detected capacity change from 0 to 264192 EXT4-fs error (device loop7): ext4_quota_enable:6988: inode #4: comm syz-executor.7: iget: special inode unallocated EXT4-fs error (device loop7): ext4_quota_enable:6990: comm syz-executor.7: Bad quota inode: 4, type: 1 EXT4-fs warning (device loop7): ext4_enable_quotas:7028: Failed to enable quota tracking (type=1, err=-117, ino=4). Please run e2fsck to fix. EXT4-fs (loop7): mount failed