sg_write: data in/out 917468/251 bytes for SCSI command 0x0-- guessing data in; program syz-executor.3 not setting count and/or reply_len properly ------------[ cut here ]------------ WARNING: CPU: 1 PID: 174525 at lib/iov_iter.c:376 _copy_from_iter+0x2bf/0x1200 Modules linked in: CPU: 1 PID: 174525 Comm: syz-executor.3 Not tainted 6.3.0-rc5-next-20230404 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:_copy_from_iter+0x2bf/0x1200 Code: 5d 41 5e 41 5f e9 25 03 35 02 e8 3c 62 36 ff be 7c 01 00 00 48 c7 c7 00 d0 9e 84 e8 db 68 5a ff e9 48 fe ff ff e8 21 62 36 ff <0f> 0b 45 31 f6 eb 87 e8 15 62 36 ff 31 ff 89 ee e8 4c 5d 36 ff 40 RSP: 0018:ffff8880506a7608 EFLAGS: 00010216 RAX: 0000000000002389 RBX: 0000000000000000 RCX: ffffc90003ef2000 RDX: 0000000000040000 RSI: ffffffff821551ff RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffff8880506a7838 R13: ffffea0000f1c000 R14: 0000000000001000 R15: ffff8880506a7838 FS: 00007ff689a11700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2f224000 CR3: 00000000318c8000 CR4: 0000000000350ee0 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+0x2d8/0xdc0 ksys_write+0x12b/0x260 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7ff68c49bb19 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:00007ff689a11188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007ff68c5aef60 RCX: 00007ff68c49bb19 RDX: 0000000000000125 RSI: 00000000200003c0 RDI: 0000000000000005 RBP: 00007ff68c4f5f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff836ec19f R14: 00007ff689a11300 R15: 0000000000022000 irq event stamp: 4251 hardirqs last enabled at (4285): [] __up_console_sem+0x78/0x80 hardirqs last disabled at (4318): [] __up_console_sem+0x5d/0x80 softirqs last enabled at (1076): [] __irq_exit_rcu+0xcc/0x110 softirqs last disabled at (941): [] __irq_exit_rcu+0xcc/0x110 ---[ end trace 0000000000000000 ]--- SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=174525 comm=syz-executor.3 sg_write: data in/out 917468/251 bytes for SCSI command 0x0-- guessing data in; program syz-executor.3 not setting count and/or reply_len properly SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=174534 comm=syz-executor.2 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=174535 comm=syz-executor.3 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=174542 comm=syz-executor.1 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=174875 comm=syz-executor.2 sg_write: data in/out 917468/251 bytes for SCSI command 0x0-- guessing data in; program syz-executor.3 not setting count and/or reply_len properly SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=174879 comm=syz-executor.1 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=174878 comm=syz-executor.3 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=175004 comm=syz-executor.2 audit: type=1400 audit(2000000294.107:118): avc: denied { map } for pid=175116 comm="syz-executor.7" path="pipe:[112241]" dev="pipefs" ino=112241 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=fifo_file permissive=1 __nla_validate_parse: 2 callbacks suppressed netlink: 164 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 164 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 164 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 164 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 168 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 168 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 168 bytes leftover after parsing attributes in process `syz-executor.3'. netlink: 168 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 168 bytes leftover after parsing attributes in process `syz-executor.4'. netlink: 168 bytes leftover after parsing attributes in process `syz-executor.3'.