loop4: detected capacity change from 0 to 264192 sg_write: data in/out 912/1 bytes for SCSI command 0x10-- guessing data in; program syz-executor.1 not setting count and/or reply_len properly ------------[ cut here ]------------ WARNING: CPU: 1 PID: 4213 at lib/iov_iter.c:629 _copy_from_iter+0x2b2/0x1140 Modules linked in: CPU: 1 PID: 4213 Comm: syz-executor.1 Not tainted 6.2.0-rc5-next-20230127 #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 c2 55 32 02 e8 29 04 36 ff be 79 02 00 00 48 c7 c7 40 c4 9e 84 e8 a8 b2 59 ff e9 51 fe ff ff e8 0e 04 36 ff <0f> 0b 45 31 f6 eb 87 e8 02 04 36 ff 31 ff 89 ee e8 69 ff 35 ff 40 RSP: 0018:ffff888044bef608 EFLAGS: 00010216 RAX: 0000000000001119 RBX: 0000000000000000 RCX: ffffc90000fd3000 RDX: 0000000000040000 RSI: ffffffff82155922 RDI: 0000000000000001 RBP: 0000000000000390 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: ffff888044bef838 R14: 0000000000000390 R15: ffff888044bef838 FS: 00007f183421f700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555555d60098 CR3: 00000000377a2000 CR4: 0000000000350ee0 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: 0033:0x7f1836ccab19 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:00007f183421f188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f1836dde020 RCX: 00007f1836ccab19 RDX: 000000000000002b RSI: 0000000020000380 RDI: 0000000000000007 RBP: 00007f1836d24f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe307effff R14: 00007f183421f300 R15: 0000000000022000 irq event stamp: 851 hardirqs last enabled at (861): [] __up_console_sem+0x78/0x80 hardirqs last disabled at (872): [] __up_console_sem+0x5d/0x80 softirqs last enabled at (890): [] __irq_exit_rcu+0xcc/0x110 softirqs last disabled at (881): [] __irq_exit_rcu+0xcc/0x110 ---[ end trace 0000000000000000 ]--- tmpfs: Unknown parameter 'mpolprefer:0' loop6: detected capacity change from 0 to 40 sg_write: data in/out 912/1 bytes for SCSI command 0x10-- guessing data in; program syz-executor.1 not setting count and/or reply_len properly loop4: detected capacity change from 0 to 264192 syz-executor.6: attempt to access beyond end of device loop6: rw=2049, sector=40, nr_sectors = 4 limit=40 Buffer I/O error on dev loop6, logical block 10, lost async page write sg_write: data in/out 912/1 bytes for SCSI command 0x10-- guessing data in; program syz-executor.1 not setting count and/or reply_len properly tmpfs: Unknown parameter 'mpolprefer:0' tmpfs: Unknown parameter '.]sĀrefer:0'