loop6: detected capacity change from 0 to 1298 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 ------------[ cut here ]------------ WARNING: CPU: 0 PID: 5828 at lib/iov_iter.c:623 _copy_from_iter+0x2b2/0x1140 Modules linked in: CPU: 0 PID: 5828 Comm: syz-executor.7 Not tainted 6.3.0-rc1-next-20230308 #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 e2 e0 34 02 e8 89 05 35 ff be 73 02 00 00 48 c7 c7 a0 e1 9e 84 e8 08 03 59 ff e9 51 fe ff ff e8 6e 05 35 ff <0f> 0b 45 31 f6 eb 87 e8 62 05 35 ff 31 ff 89 ee e8 99 00 35 ff 40 RSP: 0018:ffff88804609f608 EFLAGS: 00010212 RAX: 0000000000003e4b RBX: 0000000000000000 RCX: ffffc90006214000 RDX: 0000000000040000 RSI: ffffffff82166742 RDI: 0000000000000001 RBP: 0000000000001000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: ffff88804609f838 R14: 0000000000001000 R15: ffff88804609f838 FS: 00007f7096019700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc370c36f64 CR3: 0000000048fe2000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 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: 0033:0x7f7098aa3b19 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:00007f7096019188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f7098bb6f60 RCX: 00007f7098aa3b19 RDX: 0000000000000125 RSI: 00000000200003c0 RDI: 0000000000000004 RBP: 00007f7098afdf6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff3330d22f R14: 00007f7096019300 R15: 0000000000022000 irq event stamp: 1567 hardirqs last enabled at (1573): [] vprintk_emit+0x504/0x560 hardirqs last disabled at (1580): [] vprintk_emit+0x49b/0x560 softirqs last enabled at (1108): [] __irq_exit_rcu+0xcc/0x110 softirqs last disabled at (1017): [] __irq_exit_rcu+0xcc/0x110 ---[ end trace 0000000000000000 ]--- lo: entered promiscuous mode lo: entered allmulticast mode loop5: detected capacity change from 0 to 40 ieee802154 phy0 wpan0: encryption failed: -22 lo: left promiscuous mode lo: left allmulticast mode audit: type=1400 audit(1678778201.880:19): avc: denied { relabelto } for pid=5829 comm="syz-executor.5" name="file1" dev="sda" ino=16052 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:mouse_device_t:s0 tclass=file permissive=1 audit: type=1400 audit(1678778201.884:20): avc: denied { getattr } for pid=5829 comm="syz-executor.5" path="/syzkaller-testdir973601402/syzkaller.AErX8i/53/file0/file1" dev="sda" ino=16052 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:mouse_device_t:s0 tclass=file permissive=1 audit: type=1400 audit(1678778201.885:21): avc: denied { read write } for pid=5829 comm="syz-executor.5" name="file1" dev="sda" ino=16052 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:mouse_device_t:s0 tclass=file permissive=1 audit: type=1400 audit(1678778201.900:22): avc: denied { open } for pid=5829 comm="syz-executor.5" path="/syzkaller-testdir973601402/syzkaller.AErX8i/53/file0/file1" dev="sda" ino=16052 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:mouse_device_t:s0 tclass=file permissive=1 ieee802154 phy0 wpan0: encryption failed: -22 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 audit: type=1400 audit(1678778202.052:23): avc: denied { ioctl } for pid=5829 comm="syz-executor.5" path="/syzkaller-testdir973601402/syzkaller.AErX8i/53/file0/file1" dev="sda" ino=16052 ioctlcmd=0x9403 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:mouse_device_t:s0 tclass=file permissive=1 loop5: detected capacity change from 0 to 40 audit: type=1400 audit(1678778202.165:24): avc: denied { relabelfrom } for pid=5829 comm="syz-executor.5" name="file1" dev="sda" ino=16052 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:mouse_device_t:s0 tclass=file permissive=1 audit: type=1400 audit(1678778202.293:25): avc: denied { unlink } for pid=271 comm="syz-executor.5" name="file1" dev="sda" ino=16052 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:mouse_device_t:s0 tclass=file permissive=1