------------[ cut here ]------------ WARNING: CPU: 0 PID: 4635 at lib/iov_iter.c:623 _copy_from_iter+0x2b2/0x1140 Modules linked in: CPU: 0 PID: 4635 Comm: syz-executor.0 Not tainted 6.2.0-next-20230306 #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 b2 fe 34 02 e8 b9 16 35 ff be 73 02 00 00 48 c7 c7 e0 eb 9e 84 e8 78 0b 59 ff e9 51 fe ff ff e8 9e 16 35 ff <0f> 0b 45 31 f6 eb 87 e8 92 16 35 ff 31 ff 89 ee e8 c9 11 35 ff 40 RSP: 0018:ffff888016ebf608 EFLAGS: 00010216 RAX: 00000000000045b2 RBX: 0000000000000000 RCX: ffffc90005a04000 RDX: 0000000000040000 RSI: ffffffff82166ab2 RDI: 0000000000000001 RBP: 0000000000001000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: ffff888016ebf838 R14: 0000000000001000 R15: ffff888016ebf838 FS: 00007f4e31868700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fccfed53c00 CR3: 0000000006870000 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+0x698/0xac0 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: 0033:0x7f4e342f2b19 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:00007f4e31868188 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f4e34405f60 RCX: 00007f4e342f2b19 RDX: 0000000000000125 RSI: 00000000200003c0 RDI: 0000000000000005 RBP: 00007f4e3434cf6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc0e0b203f R14: 00007f4e31868300 R15: 0000000000022000 irq event stamp: 4789 hardirqs last enabled at (4849): [] __up_console_sem+0x78/0x80 hardirqs last disabled at (4932): [] __up_console_sem+0x5d/0x80 softirqs last enabled at (1250): [] __irq_exit_rcu+0xcc/0x110 softirqs last disabled at (1177): [] __irq_exit_rcu+0xcc/0x110 ---[ end trace 0000000000000000 ]--- SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=4651 comm=syz-executor.0 audit: type=1400 audit(1678167401.840:10): avc: denied { read } for pid=4630 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 netlink: 'syz-executor.0': attribute type 5 has an invalid length. netlink: 'syz-executor.2': attribute type 5 has an invalid length. SELinux: unrecognized netlink message: protocol=0 nlmsg_type=61 sclass=netlink_route_socket pid=4658 comm=syz-executor.0 netlink: 'syz-executor.2': attribute type 5 has an invalid length.