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: 1 PID: 38724 at lib/iov_iter.c:385 _copy_from_iter+0x2f1/0x1320 Modules linked in: CPU: 1 PID: 38724 Comm: syz-executor.7 Not tainted 6.4.0-rc5-next-20230607 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:_copy_from_iter+0x2f1/0x1320 Code: b2 ff ff 89 c3 e9 1f ff ff ff e8 9a d4 35 ff be 85 01 00 00 48 c7 c7 40 f6 9e 84 e8 49 35 5a ff e9 13 fe ff ff e8 7f d4 35 ff <0f> 0b 45 31 f6 e9 67 ff ff ff e8 70 d4 35 ff 31 ff 89 ee e8 a7 cf RSP: 0018:ffff888047417608 EFLAGS: 00010216 RAX: 00000000000042ab RBX: 0000000000000000 RCX: ffffc90005bb9000 RDX: 0000000000040000 RSI: ffffffff821634c1 RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000001000 R13: ffffea00011cd000 R14: 0000000000001000 R15: ffff888047417838 FS: 00007f4fefbd9700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2c622000 CR3: 000000003efc0000 CR4: 0000000000350ee0 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+0x69e/0xac0 sg_write+0x8d/0xe0 vfs_write+0x2b9/0xd70 ksys_write+0x122/0x250 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x6e/0xd8 RIP: 0033:0x7f4ff2663b19 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:00007f4fefbd9188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f4ff2776f60 RCX: 00007f4ff2663b19 RDX: 0000000000000125 RSI: 00000000200003c0 RDI: 0000000000000005 RBP: 00007f4ff26bdf6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd2fab7cff R14: 00007f4fefbd9300 R15: 0000000000022000 irq event stamp: 8765 hardirqs last enabled at (8821): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (8874): [] sysvec_apic_timer_interrupt+0xf/0x90 softirqs last enabled at (5896): [] irq_exit_rcu+0x93/0xc0 softirqs last disabled at (5879): [] irq_exit_rcu+0x93/0xc0 ---[ end trace 0000000000000000 ]--- SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=38794 comm=syz-executor.7 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 random: crng reseeded on system resumption SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=38857 comm=syz-executor.2 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 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=38860 comm=syz-executor.7 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=38873 comm=syz-executor.2 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: data in/out 917468/251 bytes for SCSI command 0x0-- guessing data in; program syz-executor.5 not setting count and/or reply_len properly SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=38874 comm=syz-executor.5 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=38881 comm=syz-executor.7 random: crng reseeded on system resumption 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 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=38997 comm=syz-executor.2 random: crng reseeded on system resumption sg_write: data in/out 917468/251 bytes for SCSI command 0x0-- guessing data in; program syz-executor.5 not setting count and/or reply_len properly SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=38994 comm=syz-executor.7 SELinux: security_context_str_to_sid (system_u) failed with errno=-22 SELinux: security_context_str_to_sid (system_u) failed with errno=-22 Restarting kernel threads ... SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=39009 comm=syz-executor.5 done. sg_write: data in/out 917468/251 bytes for SCSI command 0x0-- guessing data in; program syz-executor.5 not setting count and/or reply_len properly SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=39326 comm=syz-executor.5 audit: type=1400 audit(1686136677.891:54): avc: denied { relabelto } for pid=39355 comm="syz-executor.7" name="file0" dev="sda" ino=16103 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:event_device_t:s0 tclass=dir permissive=1 audit: type=1400 audit(1686136677.896:55): avc: denied { read } for pid=39355 comm="syz-executor.7" path="/syzkaller-testdir498190964/syzkaller.3Et0ul/1169/file0" dev="sda" ino=16103 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:event_device_t:s0 tclass=dir permissive=1 audit: type=1400 audit(1686136677.912:56): avc: denied { open } for pid=39355 comm="syz-executor.7" path="/syzkaller-testdir498190964/syzkaller.3Et0ul/1169/file0" dev="sda" ino=16103 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:event_device_t:s0 tclass=dir permissive=1 audit: type=1400 audit(1686136677.913:57): avc: denied { relabelfrom } for pid=39355 comm="syz-executor.7" name="file0" dev="sda" ino=16103 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:event_device_t:s0 tclass=dir permissive=1 audit: type=1400 audit(1686136677.952:58): avc: denied { getattr } for pid=271 comm="syz-executor.7" path="/syzkaller-testdir498190964/syzkaller.3Et0ul/1169/file0" dev="sda" ino=16103 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:event_device_t:s0 tclass=dir permissive=1 audit: type=1400 audit(1686136677.952:59): avc: denied { rmdir } for pid=271 comm="syz-executor.7" name="file0" dev="sda" ino=16103 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:event_device_t:s0 tclass=dir permissive=1 random: crng reseeded on system resumption tmpfs: Bad value for 'mpol' tmpfs: Bad value for 'mpol' random: crng reseeded on system resumption Restarting kernel threads ... done. random: crng reseeded on system resumption random: crng reseeded on system resumption audit: type=1400 audit(1686136680.768:60): avc: denied { associate } for pid=39961 comm="syz-executor.0" name="/" dev="devpts" ino=1 scontext=system_u:object_r:shell_exec_t:s0 tcontext=system_u:object_r:devpts_t:s0 tclass=filesystem permissive=1 cgroup: fork rejected by pids controller in /syz2 random: crng reseeded on system resumption netlink: 4 bytes leftover after parsing attributes in process `syz-executor.7'.