------------[ cut here ]------------ WARNING: CPU: 0 PID: 19884 at lib/iov_iter.c:644 _copy_from_iter+0x2f1/0x1330 Modules linked in: CPU: 0 PID: 19884 Comm: syz-executor.0 Not tainted 6.3.0-next-20230428 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:_copy_from_iter+0x2f1/0x1330 Code: 36 ff 44 89 f3 e9 2f ff ff ff e8 ea 27 36 ff be 88 02 00 00 48 c7 c7 20 da 9e 84 e8 79 1e 5a ff e9 13 fe ff ff e8 cf 27 36 ff <0f> 0b 45 31 f6 e9 77 ff ff ff e8 c0 27 36 ff 31 ff 89 ee e8 f7 22 RSP: 0018:ffff88804b9ef608 EFLAGS: 00010212 RAX: 0000000000002c03 RBX: 0000000000000000 RCX: ffffc900007cb000 RDX: 0000000000040000 RSI: ffffffff8215d5e1 RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000001000 R13: ffffea0001350400 R14: 0000000000001000 R15: ffff88804b9ef838 FS: 00007f0597f3e700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0597f1d718 CR3: 000000004bfa8000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 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+0x2d8/0xdd0 ksys_write+0x12b/0x260 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f059a9c8b19 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:00007f0597f3e188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f059aadbf60 RCX: 00007f059a9c8b19 RDX: 0000000000000125 RSI: 00000000200003c0 RDI: 0000000000000005 RBP: 00007f059aa22f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe2807d77f R14: 00007f0597f3e300 R15: 0000000000022000 irq event stamp: 24889 hardirqs last enabled at (25059): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (25262): [] sysvec_apic_timer_interrupt+0xf/0x90 softirqs last enabled at (6970): [] __irq_exit_rcu+0xcc/0x110 softirqs last disabled at (5799): [] __irq_exit_rcu+0xcc/0x110 ---[ end trace 0000000000000000 ]--- SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=19892 comm=syz-executor.0 audit: type=1326 audit(2000000102.060:38): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=20120 comm="syz-executor.3" exe="/syz-executor.3" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f856c4c7b19 code=0x0 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=20116 comm=syz-executor.5 sg_write: data in/out 917468/251 bytes for SCSI command 0x0-- guessing data in; program syz-executor.0 not setting count and/or reply_len properly SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=20128 comm=syz-executor.0 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=20172 comm=syz-executor.6 audit: type=1326 audit(2000000102.885:39): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=20120 comm="syz-executor.3" exe="/syz-executor.3" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f856c4c7b19 code=0x0 audit: type=1326 audit(2000000103.038:40): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=20388 comm="syz-executor.3" exe="/syz-executor.3" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f856c4c7b19 code=0x0 audit: type=1326 audit(2000000104.118:41): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=20592 comm="syz-executor.3" exe="/syz-executor.3" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f856c4c7b19 code=0x0 warning: checkpointing journal with EXT4_IOC_CHECKPOINT_FLAG_ZEROOUT can be slow warning: checkpointing journal with EXT4_IOC_CHECKPOINT_FLAG_ZEROOUT can be slow audit: type=1326 audit(2000000107.292:42): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=20650 comm="syz-executor.3" exe="/syz-executor.3" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f856c4c7b19 code=0x0 warning: checkpointing journal with EXT4_IOC_CHECKPOINT_FLAG_ZEROOUT can be slow netlink: 'syz-executor.5': attribute type 16 has an invalid length. netlink: 'syz-executor.5': attribute type 16 has an invalid length. tmpfs: Bad value for 'mpol' tmpfs: Bad value for 'mpol' journal_path: Non-blockdev passed as '' EXT4-fs: error: could not find journal device path journal_path: Non-blockdev passed as '' EXT4-fs: error: could not find journal device path