------------[ cut here ]------------ WARNING: CPU: 0 PID: 4114 at lib/iov_iter.c:629 _copy_from_iter+0x2bf/0x1170 Modules linked in: CPU: 0 PID: 4114 Comm: syz-executor.6 Not tainted 6.2.0-rc5-next-20230124 #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 f5 95 33 02 e8 ec c1 37 ff be 79 02 00 00 48 c7 c7 00 e5 9e 84 e8 cb 5d 5b ff e9 48 fe ff ff e8 d1 c1 37 ff <0f> 0b 45 31 f6 eb 87 e8 c5 c1 37 ff 31 ff 89 ee e8 8c bd 37 ff 40 RSP: 0018:ffff8880179cf608 EFLAGS: 00010212 RAX: 00000000000063f5 RBX: 0000000000000000 RCX: ffffc9000a41d000 RDX: 0000000000040000 RSI: ffffffff8211b72f RDI: 0000000000000001 RBP: 0000000000001000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffff8880179cf838 R13: ffffea0000388e00 R14: 0000000000001000 R15: ffff8880179cf838 FS: 00007f2f7b0ab700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020001180 CR3: 00000000162e8000 CR4: 0000000000350ef0 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+0x698/0xa90 sg_write: data in/out 917468/251 bytes for SCSI command 0x0-- guessing data in; program syz-executor.7 not setting count and/or reply_len properly 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: 0033:0x7f2f7db56b19 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:00007f2f7b0ab188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f2f7dc6a020 RCX: 00007f2f7db56b19 RDX: 0000000000000125 RSI: 00000000200003c0 RDI: 0000000000000005 RBP: 00007f2f7dbb0f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe7279f36f R14: 00007f2f7b0ab300 R15: 0000000000022000 irq event stamp: 967 hardirqs last enabled at (979): [] __up_console_sem+0x78/0x80 hardirqs last disabled at (990): [] __up_console_sem+0x5d/0x80 softirqs last enabled at (322): [] irq_exit_rcu+0x11f/0x190 softirqs last disabled at (265): [] irq_exit_rcu+0x11f/0x190 ---[ end trace 0000000000000000 ]--- SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=4116 comm=syz-executor.7 audit: type=1400 audit(1674606614.673:16): avc: denied { ioctl } for pid=4107 comm="syz-executor.0" path="/syzkaller-testdir512746496/syzkaller.sub33I/4/file0/file1" dev="sda" ino=16015 ioctlcmd=0x9403 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:mouse_device_t:s0 tclass=file permissive=1 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=4101 comm=syz-executor.6 loop0: detected capacity change from 0 to 40 ======================================================= WARNING: The mand mount option has been deprecated and and is ignored by this kernel. Remove the mand option from the mount to silence this warning. ======================================================= 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 audit: type=1400 audit(1674606615.149:17): avc: denied { unlink } for pid=267 comm="syz-executor.0" name="file1" dev="sda" ino=16021 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:mouse_device_t:s0 tclass=file permissive=1 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 7 prio class 2 Buffer I/O error on dev sr0, logical block 1, async page read Buffer I/O error on dev sr0, logical block 2, async page read Buffer I/O error on dev sr0, logical block 3, async page read Buffer I/O error on dev sr0, logical block 4, async page read Buffer I/O error on dev sr0, logical block 5, async page read Buffer I/O error on dev sr0, logical block 6, async page read Buffer I/O error on dev sr0, logical block 7, async page read syz-executor.2: attempt to access beyond end of device loop2: rw=2049, sector=40, nr_sectors = 4 limit=40 Buffer I/O error on dev loop2, logical block 10, lost async page write loop0: detected capacity change from 0 to 40 loop2: detected capacity change from 0 to 40 loop3: detected capacity change from 0 to 264192 loop5: detected capacity change from 0 to 264192 syz-executor.2: attempt to access beyond end of device loop2: rw=2049, sector=40, nr_sectors = 4 limit=40 Buffer I/O error on dev loop2, logical block 10, lost async page write