sg_write: data in/out 912/1 bytes for SCSI command 0x0-- guessing data in; program syz-executor.5 not setting count and/or reply_len properly ------------[ cut here ]------------ WARNING: CPU: 1 PID: 4601 at lib/iov_iter.c:364 _copy_from_iter+0x2b2/0x1140 Modules linked in: CPU: 1 PID: 4601 Comm: syz-executor.5 Not tainted 6.2.0-rc7-next-20230210 #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 d2 5f 33 02 e8 69 13 36 ff be 70 01 00 00 48 c7 c7 a0 cc 9e 84 e8 c8 e8 59 ff e9 51 fe ff ff e8 4e 13 36 ff <0f> 0b 45 31 f6 eb 87 e8 42 13 36 ff 31 ff 89 ee e8 a9 0e 36 ff 40 RSP: 0018:ffff8880438b7608 EFLAGS: 00010216 RAX: 0000000000000e25 RBX: 0000000000000000 RCX: ffffc90006a20000 RDX: 0000000000040000 RSI: ffffffff82155c52 RDI: 0000000000000001 RBP: 0000000000000390 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: ffff8880438b7838 R14: 0000000000000390 R15: ffff8880438b7838 FS: 00007f45ec4a7700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa780c0a7e0 CR3: 0000000008d40000 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: 0033:0x7f45eef31b19 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:00007f45ec4a7188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f45ef044f60 RCX: 00007f45eef31b19 RDX: 000000000000002b RSI: 0000000020000000 RDI: 0000000000000007 RBP: 00007f45eef8bf6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc36db003f R14: 00007f45ec4a7300 R15: 0000000000022000 irq event stamp: 8431 hardirqs last enabled at (8459): [] __up_console_sem+0x78/0x80 hardirqs last disabled at (8490): [] __up_console_sem+0x5d/0x80 softirqs last enabled at (4108): [] __irq_exit_rcu+0xcc/0x110 softirqs last disabled at (3993): [] __irq_exit_rcu+0xcc/0x110 ---[ end trace 0000000000000000 ]--- Process accounting resumed loop4: detected capacity change from 0 to 64 FAT-fs (loop4): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) FAT-fs (loop4): error, invalid access to FAT (entry 0x000000f8) FAT-fs (loop4): Filesystem has been set read-only SELinux: security_context_str_to_sid (unconfined_u) failed with errno=-22 program syz-executor.0 is using a deprecated SCSI ioctl, please convert it to SG_IO program syz-executor.0 is using a deprecated SCSI ioctl, please convert it to SG_IO SELinux: security_context_str_to_sid (unconfined_u) failed with errno=-22 sg_write: data in/out 912/1 bytes for SCSI command 0x0-- guessing data in; program syz-executor.5 not setting count and/or reply_len properly sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s sr 1:0:0:0: [sr0] tag#0 Sense Key : Not Ready [current] sr 1:0:0:0: [sr0] tag#0 Add. Sense: Medium not present sr 1:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 00 00 00 00 08 00 I/O error, dev sr0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 4 prio class 2 sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev sr0, logical block 0, async page read sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 1 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev sr0, logical block 1, async page read sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 2 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev sr0, logical block 2, async page read sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 3 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev sr0, logical block 3, async page read sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 4 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev sr0, logical block 4, async page read sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 5 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev sr0, logical block 5, async page read sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 6 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev sr0, logical block 6, async page read sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 7 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2 Buffer I/O error on dev sr0, logical block 7, async page read SELinux: security_context_str_to_sid (unconfined_u) failed with errno=-22